Population Question Answer Class 10 Geography Chapter 6 Maharashtra Board

Std 10 Geography Chapter 6 Question Answer Population Maharashtra Board

Balbharti Maharashtra State Board Class 10 Geography Solutions Chapter 6 Population Notes, Textbook Exercise Important Questions and Answers.

Class 10 Geography Chapter 6 Population Question Answer Maharashtra Board

Geography Class 10 Chapter 6 Question Answer Maharashtra Board

1. Are the following sentences right or wrong? Correct the wrong ones.

Question a.
Literacy rate is higher in Brazil than India.
Answer:
Right.

Question b.
In Brazil, people prefer living in the south east as compared to the north east.
Answer:
Right.

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population

Question c.
The life expectancy of Indians is decreasing.
Answer:
Wrong.

Question d.
The north-western part of India is densely populated.
Answer:
Wrong.

Question e.
The western part of Brazil is densely populated.
Answer:
Wrong

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population

2. Answer the following questions as per the instructions:

Question a.
Arrange the following states of India in descending order of their population. Himachal Pradesh, Uttar Pradesh, Arunachal Pradesh, Madhya Pradesh, Andhra Pradesh.
Answer:
Descending order: Uttar Pradesh, Madhya Pradesh, Andhra Pradesh, Himachal Pradesh, Arunachal Pradesh.

Question b.
Arrange the states of Brazil in ascending order of their population: Amazonas, Rio de Janeiro,
Alagoas, Sao Paulo, Parana.
Answer:
States of Brazil: Alagoas, Amazonas, Parana, Rio de Janeiro, Sao Paulo.

Question c.
Classify the factors affecting the distribution of population into favourable and unfavourable.
Answer:

Favourable FactorsUnfavourable Factors
(1) Nearness to SeaLack of roads
(2) Temperate ClimateLack of Industries
(3) New cities and townsTropical moist forests
(4) MineralsSemi arid climate
(5) Cultivable land

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population

3. Answer the following questions:

Question a.
Explain the similarities and differences between the population distribution in Brazil and India.
Answer:
(a) Similarities in population distribution in Brazil and India:

  • In Brazil as well as in India, population is very unevenly distributed.
  • Inaccessible dense forests and absence of facilities are the barriers to human settlements.
  • North, north west and north east of both the countries are the regions of low population.
  • Population is concentrated in flat fertile regions which have abundant water resources, transport facilities, mild climate and development of agriculture industries and trade in the plain region.
  • Coastal regions are densely populated in Brazil and in India.

(b) Differences between population distribution in Brazil and India.

  • The average density of population in India is 382 persons per sq.km, and that of Brazil is about 23 persons per sq.km.
  • Though the area of both the countries is occupied by vast river basins, the distribution of population is extremely opposite in both the river basins.
  • The Amazon River Basin is sparsely populated while the Ganga River Basin is densely populated.

Question b.
Giving examples, correlated to, climate and population distribution
Answer:
Climate and population distribution are closely interreleted. Temperature and rainfall, the two elements of climate greatly influence the population concentration.

(i) Dense population is found in regions with mild climate and moderate rainfall.
E.g. the coastal plains of Brazil, the northern plain as well as the coastal plains of India

(ii) Places with heavy rainfall, inaccessibility and dense forests have low population.
E.g. the interiors of the Amazon Basin in Brazil, north eastern states in India.

(iii) The snow covered regions due to extremely cold climatic conditions have less population.
E.g. the northernmost part of Jammu & Kashmir.

(iv) In certain regions, due to less rainfall and extreme climatic conditions population is sparse.
E.g. Thar desert of Rajasthan and the Drought Quadrilateral region of Brazil.

4. Give geographical reasons:

Question a.
Population is an important resource.
Answer:

  • The qualitative aspects of a population are important for a nation’s economic and social progress.
  • Natural resources of any country gets utilised properly because of the population.
  • Economic growth and development will be slow if population resource is not utilised properly.
  • Thus an optimum and quality population can bring about a country’s development.

Question b.
Brazil’s population density is very less.
Answer:

  • Brazil is the fifth largest country in the world with respect to area and has a population of about 19 crores (Census 2010).
  • It occupies 5.6% of world’s total land area and accounts for only 2.78% of the world’s total population.
  • Thus Brazil occupies more percent of world’s land and less percent of world’s total population. Therefore,
  • the density of population is very less in Brazil, i.e. around 23 persons per sq.km.

Question c.
India’s population density is high.
Answer:

  • India is the second most populous country in the world, with a population of about 121 crores (Census 2011).
  • India occupies only 2.41% of the land area of the world, but supports 17.5% of the world’s population.
  • Thus India has less percent of world’s land and supports high percent of world’s population.
  • Hence, India’s average population density is high i.e. 382 persons per sq. km.

Question d.
The density of population is sparse in the Amazon Basin.
Answer:

  • The interior part of the Amazon Basin has a very unfavourable hot and humid climate.
  • It receives heavy rainfall of nearly 2000 mm and has dense inaccessible forests.
  • Transportation, agricultute and industries are not well developed here.
  • All these factors are barriers to the development of human settlements.
  • So, the density of population is sparse in the Amazon Basin.

Question e.
Population density is high in the Ganga plains.
Answer:

  • Ganga plains are fertile low lying plains formed due to the deposition work of River Ganga and its tributaries.
  • Mild climate, moderate rainfall and fertile soil have led to the development of agriculture and industries.
  • This region also has a dense network of roadways and railways.
  • So, the population density is high in the Ganga Plains.

5. Observe the following diagram and answer the following questions:

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 1
Question 5A.
Compare and classify the population densities shown in the figure ‘a’ and ‘b’ representing 1 sq. km. of area.
Answer:
In the fig. (a) density of population is 7 persons per sq. km. The region is sparsely populated.
In the fig. (b), the density of population is 18 persons per sq. km. The region is densely populated.

Question 5B.
If in figure B one sign = 100, then what will be the sex ratio?
Answer:
One symbol = 100 persons
There are 10 female symbols.
Number of females = 100 x 10
= 1000
There are 8 male symbols
Number of males = 100 x 8
= 800

Males8001000
Females1000?

Number of females = \(\frac { 1000 X 1000 }{ 800 }\)
= 1250
Sex Ratio is 1250 females per 1000 males.

Question 6.
Comment upon the population density of fig (b).
(i) fig (b) shows the population density of India as per 2011.
(ii) The density of population is divided into four categories. They are:
(a) Less than 100 persons per sq.km. .
(b) 101-250 persons per sq.km.
(c) 251-500 persons per sq.km.
(d) more than 500 persons per sq.km.
Answer:

S.No.Population Density (per sq.km.)Name of the States / Union Territories
(1)less than 100Arunachal Pradesh, Mizoram, Jammu and Kashmir, Himachal Pradesh, Uttarakhand, Sikkim.
(2)101 to 250Meghalaya, Manipur, Nagaland, Rajasthan, Madhya Pradesh, Chattisgarh.
(3)251 to 500Gujarat, Maharashtra, Goa, Karnataka, Andhra Pradesh, Telangana, Odisha, Jharkhand, Assam, Tripura.
(4)more than 501West Bengal, Bihar, Punjab, Haryana, Uttar Pradesh,Kerala and Tamil Nadu, Delhi, Chandigarh, Puducherry, Diu, Daman, Dadra Nagar, Haveli, Andaman and Nicobar Islands.

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population

Class 10 Geography Chapter 6 Population Intext Questions and Answers

Study the maps and answer the following questions

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 9
Question 1.
States with the highest population density.
Answer:
West Bengal, Bihar, Punjab, Haryana, Uttar Pradesh, Kerala and Tamil Nadu.

Question 2.
On the basis of maps given above, classify the distribution population in India in the following table.
Answer:

S.No.Population Density (per sq.km.)Name of the States / Union Territories
(1)less than 100Arunachal Pradesh, Mizoram, Jammu and Kashmir, Himachal Pradesh, Uttarakhand, Sikkim.
(2)101 to 250Meghalaya, Manipur, Nagaland, Rajasthan, Madhya Pradesh, Chattisgarh.
(3)251 to 500Gujarat, Maharashtra, Goa, Karnataka, Andhra Pradesh, Telangana, Odisha, Jharkhand, Assam, Tripura.
(4)more than 501West Bengal, Bihar, Punjab, Haryana, Uttar Pradesh, Kerala and Tamil Nadu, Delhi, Chandigarh, Puducherry, Diu, Daman, Dadra Nagar, Haveli, Andaman and Nicobar Islands.

Question 3.
States with lowest population density.
Answer:
Arunachal Pradesh, Sikkim, Jammu and Kashmir, Himachal Pradesh, Uttarakhand and Mizoram.

Question 4.
Correlate the climate and physiography of India with its population distribution and write a note on it.
Answer:
(i) Climate and population distribution are closely inter-related.

(ii) Temperature and rainfall are the two elements of climate which greatly influence the population distribution.

(iii) Dense population is found in regions with mild climate and moderate rainfall.
E.g. the northern plain as well as the coastal plains of India

(iv) Places with heavy rainfall, inaccessibility and dense forests have low population.
E.g. northeastern states in India.

(v) The snow-covered regions due to extremely cold climatic conditions have less population.
E.g. the northernmost part of Jammu and Kashmir.

(vi) In certain regions, due to less rainfall and extreme climatic conditions population is sparse.
E.g. Westernmost part of India in the Thar desert, Rajasthan.

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 8

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population

Question 1.
In which area is population greatly concentrated?
Answer:
Population is greatly concentrated in the south eastern part of Brazil.

Question 2.
In which area is the distribution of population sparse?
Answer:
The Amazon Basin in the nothern part and the central and western parts of Brazil have sparse distribution of population.

Question 3.
Prepare a note on factors responsible for the uneven distribution of population based on the study of Brazil you have made so far.
Answer:
The distribution of population in Brazil is uneven:

  • There is sparse population in the Amazon Basin due to hot and humid climate, heavy rainfall, dense forests, inaccessibility.
  • The population is low in the swampy areas of Pantanal.
  • Low population is found in the central and western part of Brazil due to lack of minerals, low rainfall, hot and dry climatic conditions.
  • The distribution of population is moderate in Brazilian Highlands.
  • High population is found in the coastal regions and the southern part of Brazil. This is due to flat fertile land and abundant availability of minerals due to which agriculture, industries and trade have developed.

Question 4.
Identify the type of map showing distribution fig. (a) of textbook.
Answer:
The type of map showing distribution of population is a dot map.

Question 5.
On the basis of the map (b), classify the distribution of population in Brazil in the following table.:

S. No.Population DensityNames of the places
(1)Less than 50Acre, Amazonas, Roraima, Rondonia, Para, Amapa, Mata Grasso, Mato Grasso Do Sul, Goias, Tocantins, Maranhao, Piaui, Bahia, Minas Gerais, Rio Gande Do Sul
(2)51 -100Paraiba, Pamambuco, Parana, Santa Catarina, Sergipe, Rio Grande Do Norte, Ceara
(3)101 -150Alagoas
(4)151 – 300Sao Paulo
(5)More than 300Rio de Janerio, Brasilia

USE YOUR BRAIN POWER

Question 1.
Calculate the population density of the area shown in 1 sq.km, of square in ‘a’ and ‘b’ each
Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 4
Answer:
(a) In fig. (a) there are 16 Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 7
Each Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 7 = 80 people
Total number of people = 16 x 80 = 1280
Fig. (a) has a population density of 1280 people per sq. km.

(b) In fig. (b) there are 23 Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 7
Each Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 7 = 80 people
Total number of people = 23 x 80 = 1840
Fig. (b) has a population density of 1840 people per sq. km.

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population

GIVE IT A TRY

Question 1.
What could be the reasons of lower sex ratio in any region?
Answer:
With reference to both the countries, the characteristics of population are prominently notable.

  • The sex ratio of Brazil has been more than 1000 since decades.
  • Considering the sex ratio of Brazil, the number of women have considerably increaesed than men since 2001.
  • In India men outnumber women.
  • In India we see fluctuations in the sex ratio since few decades. There has been a slight increase in the sex ratio after 1991.

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 5

Question 2.
Write a similar conversation using the graph
Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 10
Answer:
A: What do these graphs show?

B: These graphs show the literacy rate of India and Brazil.

A: What do you mean by literacy rate?

B: It means the total percentage of the population of an area at a particular time aged seven years or above ‘ who can read and write with understanding.

A: It means that, as on today’s date, the literacy rate of our country is 72.2%.

B: But, Brazil had an even higher literacy rate decades back in 1981, i.e. 74.6% and it has touched 92.6 as of today (2018), which is quite commendable.

A: Yes, definitely But, we have also seen a steady growth in the literacy rate of the country, especially, during the period between 1991 and 2011.

B: Still, though we are growing, we are way behind Brazil today with 72.2% because they have a much higher literacy percentage of 92.6.

A: What measures can be adopted to increase the literacy rate of our country?

B: We can make people aware of the need and importance of education, help in teaching them, introducing various literacy campaigns by making use of free calls, free sms services, etc.

Question 3.
Study the indices of density maps of both the countries. What difference do you find? What conclusions can you draw?
Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 4
Answer:
(i) India’s density of population is proportionately catered while Brazil’s density of population is concentrated only on the eastern coast.
(ii) After studying the indices of the density maps of both the countries, we can conclude that India’s population density is much higher than that of Brazil.
(iii) The lowest value on the map of India indicates less than 100 whereas on the Brazil map it is less than 50.
(iv) Places in Brazil which are highest in density is grouped in the category of more than 300 people’ per sq. km. whereas in India it is more than 500 persons per sq. km.

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population

Question 4.
Considering the above discussion, what should be done so that our manpower is utilized properly, sex ratio improves and population growth is controlled? Write two to three sentences on each.
Answer:
(i) Measures to utilise man power properly:

  • Good education, health and training facilities are the basic requirements to improve human resources.
  • The focus of education should not just be to chum out jobseekers but also to chum out job creators.
  • The young population should be encouraged to be entrepreneurs.

(ii) Measures to improve sex ratio:

  • Build an environment to save and protect the girl child.
  • Ban sex determination test.

(iii) Measures to control population growth:

  • Family planning measures to be encouraged through media.
  • Spread of education among illiterate masses, especially about the benefits of having a small family.
  • Child marriage should be strictly prohibited.

TRY THIS

Age and Sex Pyramid:
Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 6

Question 1.
What is this figure called? What is it always known as?
Answer:
The figure is called the Age-Sex Pyramid. It is also known as Population Pyramid.

Question 2.
What does the graph depict?
Answer:
The graph depicts the percentage of male and female population of various age groups in Brazil & India for the year 2016.

Question 3.
In which country is the proportion of adults more?
Answer:
The proportion of adults is comparatively more in India.

Question 4.
‘This country’s population is getting slowly older’. Which country is being referred to? Why?
Answer:
‘This country’s population is getting slowly older – The country being referred to is Brazil. As compared to India, a larger percentage of Brazil’s population falls in the above 60 years age group. So it is said that Brazil’s population is getting slowly older.

Question 5.
In which country are the number of children comparatively more?
Answer:
The proportion of children is comparatively more in India.

Question 6.
While comparing the age-sex pyramids, which pyramid has a broader base?
Answer:
While comparing the age-sex pyramids, India’s pyramid has a broader base.

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population

USE YOUR BRAIN POWER

Question 1.
Is there a relationship between increase in life expectancy and growth of population ? How?
Answer:
(i) Yes, there is a relationship between increase in life expectancy and growth of population.
(ii) Increased life expectancy means there are more people who live longer, which means healthier and better quality of life.
(iii) This kind of population generally prefers fewer children which leads to decreased birth rates.

Question 2.
If the proportion of dependent age groups increases in the composition of population, how will it affect the economy of a country?
Ans.
(i) If the proportion of dependent age groups increases in the composition of population, it will have an adverse effect on the economy of a country.
(ii) The reason is if the working population is less, the economic activities will reduce and will have a direct impact on the economic growth and development of that nation.
(iii) The production will decrease in comparison to consumption leading to inflation also the per capita income and GDP will decrease.
(iv) Export will reduce and imports will increase.
(v) The proportion of the working population will increase, slowing down the pace of development.

Class 10 Geography Chapter 6 Population Additional Important Questions and Answers

Choose the correct option and rewrite the statements:

Question 1.
The ______ aspects of a population are important for a nation’s economic and social progress.
(a) quantitative
(b) qualitative
(c) measurable
(d) calculable
Answer:
(b) qualitative

Question 2.
India is the ________ most populous country in the world.
(a) second
(b) fifth
(c) seventh
(d) sixth
Answer:
(a) second

Question 3.
Due to farming, industries and trade, the proportion of the population got in _____ a few places.
(a) distributed
(b) sparse
(c) concentrated
(d) equal
Answer:
(c) concentrated

Question 4.
In mountainous / hilly regions, dry desert areas and densely forested areas, population density is __________ because of inaccessibility, absence of facilities and tough life.
(a) high
(b) very high
(c) sparse
(d) moderate
Answer:
(c) sparse

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population

Question 5.
Brazil is the _______ populated country in the continent of South America.
(a) second most
(b) third most
(c) fifth most
(d) most
Answer:
(d) most

Question 6.
With a population of around 19 crores, according to Census 2010, Brazil ranks _______ in the world.
(a) 3rd
(b) 5th
(c) 7th
(d) 9th
Answer:
(b) 5th

Question 7.
With respect to area, Brazil stands _______ in the world.
(a) 3rd
(b) 5th
(c) 7th
(d) 9th
Answer:
(b) 5th

Question 8.
A majority of Brazilians have concentrated within 300 kilometers of the ________.
(a) Guyana highlands
(b) Amazon river,
(c) Eastern coastal areas
(d) Pantanal wetlands
Answer:
(c) Eastern coastal areas

Question 9.
The interior of the Amazon basin is ____ populated.
(a) densely
(b) moderately
(c) highly
(d) very sparsely
Answer:
(d) very sparsely

Question 10.
The central and western parts of Brazil is ______ populated.
(a) densely
(b) sparsely
(c) moderately
(d) less
Answer:
(d) less

Question 11.
The density of population in the _______ of Brazil is moderate.
(a) Amazon Basin
(b) coastal lowlands
(c) highlands
(d) forested areas
Answer:
(c) highlands

Question 12.
In India, there has been a _______ in the sex ratio, after 1991.
(a) decrease
(b) slight increase
(c) consistency
(d) steep increase
Answer:
(b) slight increase

Question 13.
The proportion of _______ in India is more.
(a) middle-aged people
(b) old people
(c) children
(d) youth
Answer:
(d) youth

Question 14.
The rate of population growth is now ______ in India.
(a) increasing
(b) declining
(c) stable
(d) stagnant
Answer:
(b) declining

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population

Question 15.
It is observed that Brazil’s population may not increase in the next ______ decades.
(a) two
(b) three
(c) four
(d) five
Answer:
(a) two

Question 16.
The eastern coastal areas of Brazil are also called the coastal ________.
(a) lowlands
(b) highlands
(c) ravines
(d) badlands
Answer:
(a) lowlands

Question 17.
In most of the developing countries life expectancy is still less, but with socio economic development it is ________.
(a) decreasing
(b) increasing
(c) gradually declining
(d) steeply increasing
Answer:
(b) increasing

Match the columns:

S.NoColumn ‘A’Column ‘B’
(1) Coastal lowlands(a) sparsely populated
(2)Amazon Basin interior(b) moderately populated
(3)Highlands(c) densely populated (within 300 kms. of the area)

Answer:
1 – c
2 – a
3 – b

Answer the following questions in one or two sentence.

Question 1.
According to Census 2011, what is India’s population and how much is its average population density?
Answer:
According to Census 2011 India’s population is around 121 crores, and its average population density is 382 persons per sq. km.

Question 2.
What percentage of the total land area of the world is occupied by India and Brazil?
Answer:
India occupies only 2.41% of the land area of the world, whereas Brazil occupies 5.6% of the world’s total land area.

Question 3.
What is the difference in the percentage of the world population supported by India and Brazil?
Answer:
India supports 17.5% of the world’s population, whereas Brazil supports 2.78% of the world’s total population. The difference is 14.72% (India has a large population than Brazil)

Question 4.
According to Census 2010, what is the total population of Brazil and what is its average population density?
Answer:
According to Census 2010, Brazil’s total population is around 19 crores and its average population density is 23 persons per sq. km.

Question 5.
What is sex ratio?
Answer:
Sex ratio means, the number of females per 1000 males in a region.

Question 6.
What is a population pyramid?
Answer:
A population pyramid, also called age-sex pyramid, is a graphical illustration that shows the age and sek/gender related aspects of various age groups in a population.

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population

Question 7.
How is the population pyramid useful? OR State the uses of a population pyramid.
Answer:

  • The population pyramid is used to study the age and sex related aspects of a region’s population
  • We can know the number/percentage of various age groups of males and females in a country.
  • It also helps us to know the proportion of children, youth and old people in a country.

Question 8.
What is life expectancy?
Answer:
Life expectancy means the average number of years, a person born in a country is expected to live.

Question 9.
Which factors lead to an increase in average life expectancy?
Answer:
Improvement in medical facilities, progress in the medical field and access to nutritious food lead to an increase in average life expectancy.

Name the following:

Question 1.
Indian cities that are densely populated.
Answer:
Delhi, Kolkata, Mumbai, Pune, Bengaluru, Chennai.

Question 2.
Factors that play an important role in the distribution of population.
Answer:
Physiography and climate.

Question 3.
Factors due to which human settlements have been established for many centuries.
Answer:
Fertile land, plain land and availability of water.

Question 4.
Factors due to which population got concentrated in a few places, in India.
Answer:
Farming, industries and trade.

Question 5.
Areas which have sparse population density in India.
Answer:
Mountainous / hilly regions, dry desert areas, dense forest areas.

Question 6.
Factors due to which population density is sparse in a few areas.
Answer:
Inaccessibility, absence of facilities and tough life.

Question 7.
The most populated country in South American.
Answer:
Brazil.

Question 8.
Brazil’s rank in the world with regard to population as well as land area.
Answer:
Fifth.

Question 9.
The part of Brazil has the maximum concentration of population
Answer:
Eastern coastal areas or coastal lowlands.

Question 10.
The part of Brazil that is sparsely populated.
Answer:
Amazon River Basin.

Question 11.
The region of Brazil that is moderately populated.
Answer:
The Highlands.

Question 12.
The parts of Brazil that are less populated.
Answer:
Central, western and interior of Amazon basin.

Question 13.
Out of Brazil and India, the country where men outnumber women.
Answer:
India.

Question 14.
Increase in this factor is an indicator of development of that society.
Answer:
Life expectancy, Sex Ratio and Literacy Rate.

Question 15.
The development of this aspect of an economy leads to an increase in average life expectancy.
Answer:
Socio-economic development.

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population

Are the following sentences right or wrong?

Question 1.
India is the fifth most populous country in the world.
Answer:
Wrong.

Question 2.
India’s average population density is 832 persons per sq. km. as per the 2011 Census.
Answer:
Wrong.

Question 3.
Brazil is the second-most populous country in the World.
Answer:
Wrong.

Question 4.
Brazil ranks fifth in the world with respect to area.
Answer:
Right.

Question 5.
The total population of Brazil is around 91 crores.
Answer:
Wrong.

Question 6.
In Brazil and India, population is evenly distributed.
Answer:
Wrong.

Question 7.
The central and western part of Brazil are less populated.
Answer:
Right.

Question 8.
The sex ratio of Brazil has been less than 1000 since centuries.
Answer:
Wrong.

Question 9.
It is observed that in Brazil, the rate of population growth is increasing.
Answer:
Wrong.

Fill the map with the given information:

Question 1.
On a map of India, show the following.

  1. Largest state areawise.
  2. Smallest state areawise.
  3. State with highest population.
  4. State with lowest population.
  5. State having highest density of population.
  6. State having lowest density of population.
  7. State having highest sex ratio.
  8. State having lowest sex ratio.
  9. State having highest literacy rate.
  10. State having lowest literacy rate.

Answer:
Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 11

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population

Question 2.
On a map of Brazil, show the following.

  1. Largest state areawise.
  2. Smallest state areawise.
  3. State with highest population.
  4. State with lowest population.
  5. State having highest density of population,
  6. State having lowest density of population.

Answer:
Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 12
Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 13

Give geographical reasons:

Question 1.
In India, population is very unevenly distributed.
Answer:
(i) In India, population is very unevenly distributed.
(ii) Physiography and climate play an important role in the distribution of population.
(iii) Due to fertile land, plain land and availability of water, human settlements have been established in some parts for many centuries.
(iv) Due to farming, industries and trade, the . proportion of the population has become concentrated in a few places.
(v) For example, the Northern Plains of the country, Delhi, Kolkata, Mumbai, Pune, Bengaluru, Chennai, etc.
(vi) On the contrary, in mountainous / hilly regions, dry desert areas, dense forest areas, density is sparse because of inaccessibility, absence of facilities and tough life.

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population

Question 2.
The distribution of population is very uneven in Brazil.
Answer:
(i) The distribution of population is very uneven in Brazil. .
(ii) A majority of the Brazilians are concentrated within 300 kilometers of the eastern coastal areas also called the coastal lowlands because agriculture and industries are well developed here.
(iii) In the interior of the Amazon Basin population is very sparse due to.
(iv) Unfavourable climate, heavy rainfall,
inaccessibility and dense forests which are the barriers to development of human settlements here.
(v) The central and western part of Brazil is less moderate.

Question 3.
The average life expectancy in India is increasing.
Answer:
(i) Earlier the average life expectancy in India was low due to, lack of medical facilities which lead to high incidence of diseases and epidemics like chicken pox, malaria, cholera, etc.
(ii) Today with improvement in access to medical facilities and improvement in technology, diseases and epidemics are controlled.
(iii) Also today people in India have an improved standard of living, they eat nutritious food and there is awareness of good health.
All this has led to increase in average life expectancy in India.

Question 4.
In north-eastern India, sparse distribution of population is found.
Answer:
(i) North East India comprises of dense forests and uneven topography.
(ii) There exist unfavourable climatic conditions in this part.
(iii) There is less development of transport, communication and industries here.
So, in north-eastern India, sparse distribution of population is found.

Question 5.
In India, number of men outnumber women. Is this condition found in all the states of India?
Answer:
In India, men outnumber women, on an average. But in Kerala women outnumber men. Sex Ratio of Kerala is 1084 females per 1000 males (2011 Census).

Question 6.
Explain the reasons of low sex ratio in India.
Answer:
Some of the reasons for lower sex ratio in any region are:

  • Illiteracy: Narrow mindedness and lack of education leads to gender bias in the society.
  • Preference for a male child : There is preference of a boy child over a girl child. Nutrition to girls is ignored.
  • Poverty: Povertystruck families do not prefer a girl child as they consider female child a burden due to practices like dowry prevalent in the society.
  • Female foeticide and female infanticide: Female foeticide and female infanticide are on the rise due to the wrong use of modem technology.
  • Maternity deaths: Higher maternity deaths have lowered the sex ratio.

Question 7.
Explain – The growth rate of population in India is decreasing but population is increasing.
Answer:
(i) Growth rate of population is calculated on the basis of difference between birth rate and death rate.
(ii) Earlier the difference between birth rate and death rate was high, so the growth rate was high.
(iii) Today the growth rate is decreasing because the difference between birth rate and death rate is not as high as it was earlier.
So it is said that in India the growth rate of population is decreasing, but the population is increasing.

Question 8.
Explain the uneven distribution of population in India.
Answer:
(i) Dense population is found in regions with mild climate and moderate rainfall. E.g. the northern plain as well as the coastal plains of India
(ii) Places with heavy rainfall, inaccessibility and dense forests have low population. E.g. north eastern states in India.
(iii) The snow covered regions due to extremely cold climatic conditions have less population. E.g. the northernmost part of Jammu & Kashmir.
(iv) In certain regions, due to less rainfall and extreme climatic conditions population is sparse. E.g. westernmost part of India in the Thar desert, Rajasthan.
(v) Moderate population is found in the plateau regions of Narmada valley.

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population

Try this

Population growth rate graphs :
Look at the graphs in Fig. indicating the population growth rate of Brazil and India and answer the following questions.
Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 14
Question 1.
What is the common feature in both the graphs?
Answer:
Both the graphs are indicating a downward trend in population growth rate of Brazil and India.

Question 2.
What is India’s growth rate of population in 2011?
Answer:
India’s population growth rate in 2011 is 1.5%.

Question 3.
In which two decades has the population growth rate of India remained almost stable?
Answer:
The population growth rate of India has remained almost stable during the two decades 1971 to 1981 and 1981 to 1991.

Question 4.
From which time period has Brazil seen a sharp decline in the population growth rate?
Answer:
From 1980-1990, Brazil has seen a sharp decline in the population growth rate.

Question 5.
What is the main point of difference between the two graphs?
Answer:
(i) In the first decade between 1961-1971 the growth rate in India showed an upward trend whereas Brazil has a downward trend throughout.
(ii) Also the decline in Brazil is more sharp but India’s decline in the growth rate is marginal.

Question 6.
What is the interesting feature of Brazil’s growth rate of population?
Answer:
The interesting feature of Brazil’s population growth rate is that it is about to touch 0.0 and then will begin its negative growth rate i.e. the population will start decreasing.

Observe the figure carefully and answer the following questions given below.
Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 15
Question 1.
What is the class interval of the data?
Answer:
The class interval of the data is 10 years.

Question 2.
In which decade was India’s life expectancy the highest?
Answer:
Highest life expectancy in India was in the decade of 1960-1970.

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population

Question 3.
In which year has the difference in the life expectancy between Brazil and India been the maximum? By how much?
Answer:
In the year I960, the difference between the life expectancy of Brazil and India has been the maximum by 13 years. (54 – 51)

Question 4.
Has the difference in life expectancy been increasing or decreasing?
Answer:
During the past 36 years, i.e. from 1980 onwards, the difference between the life expectancy of Brazil and India has remained constant. It has been 7 to 8 years.

Question 5.
What is the similarity between both the graphs?
Answer:
Both India and Brazil have experienced an increase in the life expectancy. Both the graphs indicate an upward trend continuously.

Question 6.
Is the increase in life expectancy a positive or a negative indicator of an economy? Why?
Answer:
The increase in life expectancy is a positive indicator for any economy because longer the people’s average age, longer is their contribution towards the growth of an economy.

Based on the figure, observe carefully and answer the questions given below.
Maharashtra Board Class 10 Geography Solutions Chapter 6 Population 16
Question 1.
What do the graphs indicate?
Answer:
The graphs indicate the literacy rate of India and Brazil (in percentage).

Maharashtra Board Class 10 Geography Solutions Chapter 6 Population

Question 2.
What is this general conclusion that you can come to, after observing both the graphs?
Answer:
On observing both the graphs, we can conclude that Brazil is and has always been way ahead of India with regard to literacy rate.

Question 3.
Which country has higher literacy rate?
Answer:
Brazil has a higher literacy rate.

Question 4.
What was the literacy rate of Brazil in 2011?
Answer:
Brazil had a literacy rate of 91.4% in 2011.

Question 5.
What is the difference in the literacy rate of Brazil and India in 2016?
Answer:
Literacy rate of Brazil and India had a difference of 20.4% (92.6 – 72.2) in 2016.

Question 6.
What is the difference in the literacy rate of India between the years 2001 and 2011?
Answer:
The difference in the literacy rate of India is 8.3% (69.3 – 61) between the years 2001 and 2011.

Class 10 Geography Textbook Solutions Answers

Climate Question Answer Class 10 Geography Chapter 4 Maharashtra Board

Std 10 Geography Chapter 4 Question Answer Climate Maharashtra Board

Balbharti Maharashtra State Board Class 10 Geography Solutions Chapter 4 Climate Notes, Textbook Exercise Important Questions and Answers.

Class 10 Geography Chapter 4 Climate Question Answer Maharashtra Board

Geography Class 10 Chapter 4 Question Answer Maharashtra Board

Question 1.
Write names of the States/Regions in appropriate columns.
Bihar, Tocantins, Pernambuco, Alagoas, Eastern Maharashtra, Western part of Rajasthan, Gujarat, Rio Grande Do Norte, Paraiba, Western Ghats, Eastern Himalayas, Western Andhra Pradesh, Roroima, Amazonas, West Bengal, Rio Grande Do Sul, Santa Catarina, Goa
Answer:

States/RegionsIndiaBrazil
High rainfallWestern Ghats, Eastern Himalayas, GoaTocantins, Rio Grande Do Sul, Roraima
Moderate rainfallBihar, Eastern Maharashtra West BengalSanta Catarina, Amazonas, Alagoas
Low rainfallWestern part of Rajasthan, Gujarat, Western Andhra PradeshPernambuco, Paraiba,

Rio Grande Do Norte, Alagoas

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate

2. State whether right or wrong. Rewrite the wrong sentences

Question a.
The fact that Brazil lies on the equator affects its climate in a big way.
Answer:
Right.

Question b.
India and Brazil have the same seasons at the same time.
Answer:
Wrong – India and Brazil have different seasons at the same time.

Question c.
India faces tropical cyclones frequently.
Answer:
Right.

Question d.
Brazil gets a lot of rainfall because of the southwest monsoon winds.
Answer:
Wrong – Brazil gets rainfall from South-East Trade Winds and North-East Trade Winds.

3. Give geographical reasons:

Question a.
The north-eastern part of Brazilian Highlands receives very less rainfall.
Answer:
(i) Brazil gets rainfall from the South-East Trade Winds and the North-East Trade Winds.
(ii) Parts of the Brazilian Highlands extend upto the northern coast.
(iii) The Escarpments act as an obstruction to the winds blowing from the sea and cause orographic type of rainfall in the coastal region.
(iv) Beyond the Highlands, the effect of these winds gets reduced. As a result, the rainfall is minimal.
(v) Thus the North Eastern part of Brazilian highlands receives less rainfall. This rain shadow region is also called the ‘Drought Quadrilateral’.

Question b.
Snowfall doesn’t always occur in Brazil.
Answer:
(i) Because of the vast latitudinal extent of Brazil, it experiences a wide range of climatic variations. Near the Equator it is hot, while tropical type of climate is found near the Tropic of Capricorn.

(ii) Considering the temperatures in Brazil, the northern part of Brazil is hot while the temperatures in the southern part are comparatively lower.

(iii) It generally snows in those areas lying in the temperate or polar regions or in the mountainous regions of very high altitude.

(iv) Snowfall does occur but is only confined to higher elevations in the southern states of Rio Grande Do Sul, Parana and Santa Catarina.

(v) Most part of the country lies in the tropical zone which experiences a hot and humid climate.

So snowfall doesn’t always occur in Brazil and is considered a rare phenomenon.

Question c.
Convectional type of rainfall is not prominent in India.
Answer:
(i) Convectional rains are a feature of the equatorial regions and the equator passes through the northern part of Brazil.
(ii) Due to the intense heat here the air expands and rises upwards. As the air goes upwards it cools down, condensation occurs and clouds are formed. This leads to convectional rains every day.
(iii) As such conditions do not exist in India, convection rainfall is not prominent here.

Question d.
Tropical cyclones occur rarely in Brazil.
Answer:
(i) In the coastal regions of Brazil near the Equator, differences in temperatures are negligible.
(ii) The winds move in the vertical direction in this equatorial region.
(iii) Similarly, the convergence zone of the trade winds is weak here. As a result, cyclones are not formed.
(iv) As a result tropical cyclones occur rarely in Brazil.

Question e.
There is not much difference in the range of temperature in Manaus.
Answer:
(i) Manaus is located to the north of Brazil and close to the Equator.
(ii) This region receives perpendicular rays of the sun throughout the year.
(iii) It also receives convectional type of rainfall every day.
(iv) So the climate is hot and humid throughout the year.
(v) As, there is not much difference in the maximum and minimum temperatures there is not much difference in the range of temperature in Manaus.

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate

Question f.
India receives precipitation from the North East Monsoon Winds too.
Answer:
(i) In the winter season, India is influenced by the North East Monsoon Winds.
(ii) These winds bring cool breeze to the country.
(iii) While blowing over Bay of Bengal the North East Monsoon Winds pick up moisture and give rain to the eastern coast of Andhra Pradesh and Tamil Nadu in India.
So, it is said that India receives precipitation from the North East Monsoon Winds too.

4. Answer the following questions:

Question a.
Describe in brief the changes occurring in the climatic conditions of India while going from south to north.
Answer:
(i) India’s Climate is of monsoon type. But there is diversity in climatic conditions of India due to the latitudinal location and altitude of the place.

(ii) As the Tropic of Cancer passes through middle of India, it divides the country into tropical region and sub tropical region.

(iii) The tropical region receives nearly vertical rays of the Sun and the temperature increases as we move towards the south.

(iv) In the sub tropical region of the north, summers are very hot and winters are very cool and dry.

(v) The Himalayas lie in the northern part of India. They protects us from the cold winds that blow from the north, obstructs the South West Monsoon Winds which results in orographic rainfall in its southern slopes.

(vi) In major parts of India precipitation is in the form of rainfall, but in the Himalayas it is in the form of snowfall.

Question b.
Explain the importance of the Himalayas and the Indian Ocean with respect to the climate of India.
Answer:
(i) The Indian Ocean and the Himalayan ranges exert a great influence on the climate of India and the origin of monsoons.

(ii) Because of high temperatures in summers, a low pressure area develops in the Punjab Plains and the Thar Desert of Rajasthan.

(iii) At the same time a high pressure region develops over the Indian Ocean.

(iv) This attracts winds and they start blowing from the Indian Ocean towards the mainland India.

(v) These are moisture-laden winds which bring rainfall to India.

(vi) These winds move towards the Himalayas and due to the natural obstruction of the Himalayas, orographic rain occurs.

(vii) Later these winds retreat from the Himalayas and move from the north-east towards the Indian Ocean and brings rain to some parts of the Peninsula.

(viii) Also the severe cold winds blowing from the north are obstructed by the Himalayas and it saves India from severe winters.

Question c.
Discuss the factors affecting the climate of Brazil.
Answer:
(i) Brazil experiences wide range of climatic variations due to its vast latitudinal extent, proximity to the Equator, presence of the Atlantic Ocean and the Great Escarpment.

(ii) The northern part of Brazil near the Equator is hot, while temperate type of climate is found near the Tropic of Capricorn.

(iii) Brazil gets rainfall from the South-East Trade Winds and the North-East Trade Winds blowing from the Atlantic Ocean.

(iv) Convectional rainfall occurs in places near the equator. Whereas, the Escarpment act as an obstruction to the winds blowing from the sea and cause orographic type of rainfall in the coastal region.

(v) Beyond the Highlands the effects of these winds gets reduced, as a result the rainfall is minimal. This region is a rain-shadow region and is called ‘The Drought Quadrilateral.’

(vi) The Equator passes through the northern part of Brazil so the temperature here is high. Average temperature of Amazon valley is 25°-28°C. Climate is cooler in the highlands. While the temperatures in the southern part are comparatively lower.

(vii) In the coastal regions near the Equator in Brazil, differences in temperatures are negligible. Because of the proximity to the sea, the coast experiences mild and humid climate.

(viii) The winds move in the vertical direction in this region. Similarly, the convergence zone of the trade winds is weak here. So the tropical cyclones are a rare phenomena here.

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate

Question d.
Compare the climates of brazil and India?
Answer:

Climate of IndiaClimate of Brazil
(i) India has a monsoon type of climate.(i) Brazil has a tropical climate to the north and temperate climate to the south.
(ii) The southern part of India lies in the tropical region so the temperature is high in the south and comparatively low in the north, i.e., the temperature decreases from south to north.(ii) The northern part of Brazil lies in the tropical region so the temperature is high in the north and comparatively low in the south, i.e., the temperature decreases from north to south.
(iii) India receives rain from the South West and the North East Monsoon Winds.(iii) Brazil receives rain from the South East and North East Trade Winds.
(iv) India receives orographic rainfall.(iv) Brazil receives convectional and orographic type of rainfall.
(v) The western part of Rajasthan, Gujarat and eastern side of the Western Ghats receive less rain.(v) The north eastern part of the Brazilian highlands is a rain shadow region.
(vi)     Tropical cyclones are a frequent phenomena.(vi) Tropical cyclones are a rare phenomena

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate

Class 10 Geography Chapter 4 Climate Intext Questions and Answers

Observe the given map below and answer the following questions
Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 1
Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 2

Question 1.
Considering the isotherms of Brazil, what is the average range of temperature in Brazil?
Answer:
Considering the isotherms of Brazil, the average range of temperature of Brazil is 10°C (28°C-18°C).

Question 2.
In which area does it rain more?
Answer:
It rains more in the northern and central part of Brazil. E.g., Amazon Valley.

Question 3.
From which directions are winds blowing towards Brazil?
Answer:
The winds are blowing from North East and South East directions.

Question 4.
What could be the reason behind that?
Answer:
These are permanent trade winds which blow from high pressure belt to the equatorial low pressure belt. Brazil being in the tropical zone, a low pressure area is created and wind start blowing from the ocean to the land.

Question 5.
What could be the obstruction in the way of these winds?
The Escarpment acts as obstruction in the way of the South East Trade Winds coming from the sea.

Question 6.
Which type of rainfall will occur because of these winds?
Answer:
Orographic rainfall will occur because of these winds.

Question 7.
Correlate these winds and rainfall.
Answer:
The escarpments act as an obstruction to the winds blowing from the sea and cause an orographic type of rainfall in the coastal region. Beyond the Highlands, the effect of these winds gets reduced. As a result, the rainfall is minimal.

Question 8.
In which part of Brazil are the average temperatures low?
Answer:
The average temperatures are low in the southern part of Brazil.

Question 9.
Identify the rain-shadow area in Brazil. Describe its climatic characteristics.
Answer:
The north-eastern part of the Brazilian highlands is a rain shadow region. Beyond the highlands, the effect of the South East Trade Winds gets reduced and the rainfall is minimal. Also, the temperature here is quite high. This rain shadow region is referred to as the ’Drought Quadrilateral’.

Question 10.
In which region do you find a higher temperature?
Answer:
The northern part of Brazil has higher temperature.

Question 11.
Considering the latitudinal extent of Brazil, where will you find a temperate climate in Brazil?
Answer:
The southern part of Brazil lying below 23 V4°S latitude (Tropic of Capricorn) experiences temperate climate.

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate

Question 12.
Describe the winds blowing between 0° to 5° N and S zones.
Answer:
The winds blowing between 0° to 5° N and S zones move in the vertical direction leading to convectional type of rain. The North East and South East Trade winds are very weak in this region.

Question 13.
Which method has been used to show distribution in this map?
Answer:
The Isopleth method has been used to show distribution in this map.

Observe the given map and answer the following questions
Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 16
Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 17

Question 1.
Which region gets more than 4000mm of rainfall?
Answer:
Western Ghats, Western Coasts of India and the northeastern region comprising of Mawsynram, Cherrapunji and parts of Assam and Arunachal Pradesh gets more than 4000 mm of rainfall.

Question 2.
Identify the regions with maximum and minimum temperatures?
Answer:
Central and North Western parts of Peninsular Plateau and islands have high temperature. Hilly regions of north, northeast and south India have low temperature.

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate

Question 3.
In which direction is the temperature increasing?
Answer:
The temperature is increasing towards the south.

Question 4.
Identify the direction of the winds shown. What are they known as?
Answer:
The winds shown are blowing from the south west to north east direction. These winds are called Southwest Monsoon Winds.

Question 5.
Which winds are responsible for the rainfall in India ?
Answer:
South-West Monsoon Winds are responsible for rainfall in India.

Question 6.
Some part of Rajasthan is under desert? What could be the reason for it?
Answer:
The South West Monsoon Winds blow parallel to the Aravallis. As these moisture laden winds are not obstructed by the Aravallis it rains less here. Hence, Rajasthan is under desert.

Question 7.
Draw the main parallel latitude passing through India which affects its climate.
Answer:
Students are expected to draw the Tropic of Cancer.

Question 8.
In which part of Peninsular India is semi-arid climatic conditions found and why?
Answer:
(i) The part of peninsular India which has semi-arid climatic conditions are central part of Peninsula Plateau comprising parts of Central Maharashtra, Western Andhra Pradesh, Eastern Karnataka and Western Tamil Nadu. These regions lie on the leeward side of the Western Ghats and Eastern Ghats. It rains less here and a rain shadow region is formed.
(ii) Some parts of Gujarat and Rajasthan are also semi-arid as the Aravallis lie parallel and do not obstruct the South-west Monsoon winds.

Give geographical reasons:

Question 1.
Shillong gets less than 1000 mm of rainfall annually, whereas Cherrapunji/Mawsynram which is nearby get’s over 11000 mm, of rainfall annually.
Answer:
(i) Cherrapunji/Mawsynram lies in the higher altitude on the windward side of the Khasi Hills and receives rainfall from the South West Monsoon Winds.
(ii) While Shillong lies in the lower altitude on the leeward side of the Khasi Hills, so it receives less rainfall being in the rain shadow area.

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate

Observe the pictures given below and write brief description about them.

Question 1.
Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 31
Answer:
Both the figures shows the traffic congestion during heavy rains. Due to lack of proper drainage and heavy downpour the water gets accumulated disturbing the commuting system.

Question 2.
Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 37
Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 35
Answer:
Both the figures show the drought affected regions of India and Brazil respectively. Due to scarce amount of rainfall received in these regions the land has became dry and cannot be cultivated.

Question 3.
Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 38
Answer:
figure shows snow fall during winter season in the northern parts of India.

Question 4.
Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 32
Answer:
figure shows heavy rainfall in the Brazilian rainforest region.

Question 5.
Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 33
Answer:
figure shows the trees being cut down to bring land under cultivation. Deforestation is a major issue in Brazil.

Question 6.
Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 34
Answer:
figure shows a well from which water is used for domestic purpose.

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate

Question 7.
Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 36
Answer:
figure shows paddy fanning in India. The farmers are planting paddy. The water logged fields are shown.

Study the graphs given below and answer the following questions:

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 14

Question 1.
In which month is the highest temperature found in all the four cities?
Answer:
The highest temperature is found in the month of January.

Question 2.
In which month does it rain the most in the given cities?
Answer:
It rains the most in the month of march.

Question 3.
When does Brazil have its rainy season?
Answer:
Brazil has its rainy season from December to march.

Question 4.
Which city has the maximum range of temperature? How much is it?
Answer:
Porto Alegre has the maximum range of temperature. It is 20°C (30° C -10° C).

Question 5.
What type of climate will be found in Rio de Janeiro?
Answer:
Rio de Janeiro has mild & humid climate.

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 15

Question 1.
What difference do you find in the rainy seasons of Chennai and other cities of India? Why?

Rainy Season of ChennaiRainy Seasons of Other Indian Cities
(i) Chennai mainly receives rain from October to December.Other cities of India receive rainfall from June to September.
(ii) Chennai receives rainfall from North East Monsoon Winds.The other cities receive rainfall mainly from South-West Monsoon Winds.

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate

Question 2.
What similarities do you see in the temperature curves of Delhi and Kolkata?
Answer:
The following similarities can be seen in the temperature curves of Delhi and Kolkata:

  • The temperature rises from January to March.
  • From March till June high temperatures are experienced.
  • The temperature drops till July and remain stable in August and September.
  • Thereafter the temperatures decreases.

Question 3.
Calculate the average range of minimum and maximum temperatures of all the four cities.

CitiesAverage range of minimum and maximum temperatures
Delhi34°C (41°-7°)
Kolkata28°C (37°-9°)
Mumbai17°C (34° -17°)
Chennai18°C (39° – 21°)

Question 4.
In which city is the range minimum? What can you infer about its climate?
Answer:
The range is minimum in Mumbai due to its proximity to the sea.

Question 5.
In which city is the range maximum? What can you infer from this about its climate?
Answer:
The range is maximum in Delhi. It indicates that Delhi has an extreme climate.

Question 6.
Based on the temperature and rainfall of Mumbai, comment upon its climate.
Answer:
Mumbai has an equable climate, with less variation in summer and winter temperature.

Question 7.
Classify the cites as cities with equable and extreme climates.
Answer:
Equable climates – Mumbai, Chennai, Kolkata. Extreme climate – Delhi.

Give it a try

Question 1.
Considering the various factors affecting Brazil’s climate, complete the table.
Answer:

RegionsClimatic characteristics
(1) Amazon ValleyThe climate is generally hot and humid. It receives around 2000mm of rainfall. The average range of temperature here is 25°C – 28°C.
(2) HighlandsHot and dry climate, low rainfall.
(3) PantanalWarm and humid.
(4) North Coastal regionHot and humid climate. Rainfall between 1000 to 1200 mm.
(5) South Coastal regionMild and humid climate.
(6) Southernmost region of BrazilHot summers, cool winters and snowfall.

Question 2.
In which part of India are crops grown in a year? How is this related to the rainfall over there?
Answer:
(i) Coastal areas of Tamil Nadu in India grow rice three times a year.
(ii) This crop is taken during the retreating monsoon season.
While blowing over Bay of Bengal, the North East Monsoon winds pick up moisture and give rain to eastern coast of Tamil Nadu.

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate

Use your brain power!

Question 1.
Group the months into seasons for a whole year according to the charts given.

SeasonsIndiaBrazil
SummerMarch to MayDecember to March
WinterDecember to FebruaryJune to September

Answer:

Colours of Both!

Question 1.
Considering the location extent and climatic conditions of both the countries, write months according to the seasons.
Answer:

SeasonsIndiaBrazil
SummerMarch to MayDecember to March
WinterDecember to FebruaryJune to September

Class 10 Geography Chapter 4 Climate Additional Important Questions and Answers

Choose the correct option and rewrite the statements:

Question 1.
The climate found near the Equatorial region is
(a) hot
(b) dry
(c) humid
(d) cold
Answer:
(a) hot

Question 2.
The climate found near the Tropic of Capricorn is
(a) tropical
(b) hot
(c) temperate
(d) tundra
Answer:
(c) temperate

Question 3.
Brazil gets rainfall from
(a) North-West and South-West trade winds
(b) Westerly winds
(c) South-West and North-East
(d) North-East and South-East trade winds
Answer:
(d) North-East and South-East trade winds

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate

Question 4.
The act as an obstruction to the winds blowing from the sea in Brazil.
(a) Himalayas
(b) Escarpments
(c) Andes
(d) Western Ghats
Answer:
(b) Escarpments

Question 5.
The coastal region of Brazil receives a type of rainfall.
(a) orographic
(b) cyclonic
(c) convectional
(d) frontal
Answer:
(a) orographic

Question 6.
Since the convergence of trade winds are weak near the equator, are not formed.
(a) clouds
(b) ocean currents
(c) cyclones
(d) tides
Answer:
(c) cyclones

Question 7.
The average temperature in the Amazon valley is
(a) 15°-20°C
(b) 13°-15°C
(c) 30°-32°C
(d) 25°-28°C
Answer:
(d) 25°-28°C

Question 8.
The Amazon valley receives around mm of rainfall
(a) 2000
(b) 1800
(c) 1500
(d) 1000-1200
Answer:
(a) 2000

Question 9.
India’s climate is of type.
(a) humid
(b) monsoon
(c) equatorial
(d) cold
Answer:
(b) monsoon

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate

Question 10.
The diversity in the climatic conditions of India is due to the location and altitude of the place.
(a) longitudinal
(b) latitudinal
(c) equatorial
(d) tropical
Answer:
(b) latitudinal

Question 11.
The Ocean and the Himalayan ranges exert a great influence on the climate of India.
(a) Atlantic
(b) Arctic
(c) Pacific
(d) Indian
Answer:
(d) Indian

Question 12.
Orographic type of rainfall occurs in India because of the natural obstruction of
(a) Himalayas
(b) Escarpments
(c) Highlands
(d) Satpuda
Answer:
(a) Himalayas

Question 13.
As the passes through the middle of India, it is considered to be a tropical region.
(a) Tropic of Capricorn
(b) Equator
(c) Tropic of Cancer
(d) 60°S latitude
Answer:
(c) Tropic of Cancer

Question 14.
Most part of Brazil lies in the zone.
(а) polar
(b) tropical
(c) sub-tropical
(d) temperate
Answer:
(b) tropical

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate

Match the columns:

Question 1.

Column ‘A’Column ‘B’
(1) Wettest places in the world(a) Tamil Nadu
(2) Driest place in India(b) Cherrapunji and Mawsynram
(3) Rainshadow region in Brazil(c) Jaisalmer, Rajasthan
(4) Climate of India(d)    Drought Quadrilateral

(e)    Monsoon type

(f)     Dry type

Answer:
1 – b
2 – c
3 – d
4 – e

Answer in one sentence each.

Question 1.
Which natural disasters does India face frequently?
Answer:
India frequently faces natural disasters like erratic rainfall, droughts, cyclones, floods, etc.

Question 2.
Why does Brazil experience wide climatic variations?
Answer:
Brazil has vast latitudinal extent because of which it experiences wide climatic variations.

Question 3.
Which winds bring rainfall to Brazil?
Answer:
Brazil receives rainfall from the South East and North-East Trade Winds.

Question 4.
What acts as an obstruction to the winds blowing from sea in Brazil?
Answer:
The Escarpments act as an obstruction to the winds blowing from the sea in Brazil.

Question 5.
Which region is called the Drought Quadrilateral’?
Answer:
The northern part of Brazil beyond the Highlands is called ‘Drought Quadrilateral’.

Question 6.
Where is the difference in temperature negligible in Brazil?
Answer:
In Brazil the difference in temperature is negligible in the coastal regions near the equator.

Question 7.
In which zone does most of Brazil and India lie?
Answer: Most part of Brazil and India lies in the Tropical zone.

Question 8.
Which important latitude passes through the northern part of Brazil?
Answer:
The equator passes through the northern part of Brazil.

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate

Question 9.
What is the average temperature in Amazon valley?
Answer:
The average temperature in Amazon valley is 25°-28°C.

Question 10.
Which part of Brazil has cooler climate?
Answer:
The climate is cooler in the Highlands.

Question 11.
Why do the Brazilian coasts experience mild and humid climate?
Answer:
The Brazilian coasts experience mild and humid- climate because of its proximity to sea.

Question 12.
Which type of climate is found in India?
Answer:
Monsoon type of climate is found in India.

Question 13.
Which important latitude passes through the middle of India?
Answer:
The Tropic of Cancer passes through the middle of India.

Question 14.
What diversifies the climatic conditions of India?
Answer:
The diversity in the climatic conditions of India are due to the latitudinal location and altitude of India.

Question 15.
What exerts a great influence on the climate of India and the origins of the monsoon?
Answer:
The Indian Ocean and the Himalayan ranges exert a great influence on the climate of India and the origin of monsoons.

Question 16.
In India, what obstructs the cold winds blowing from the North?
Answer:
In India, the Himalayas obstruct the cold winds blowing from the north.

Question 17.
What brings more rain in the coastal regions of India?
Answer:
The obstruction caused by the Eastern and Western Ghats brings more rain in the coastal regions of India.

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate

Question 18.
Find out more about the different ways of classification of the seasons. For example, what is summer?
Answer:
The hot weather season is called summer. The season where the rain begins is called the monsoon. The cold weather season is called winter.

Name the following:

Question 1.
The two places in India which are considered as the wettest places in the world.
Answer:
Cherrapunji and Mawsynram.

Question 2.
Years in which Brazil has experienced snowfall.
Answer:
1879,1957and 1985.

Question 3.
The driest part of India.
Answer:
Jaisalmer, Rajasthan.

Question 4.
The state in India which receives maximum rainfall during the retreating monsoon season.
Answer:
Tamil Nadu.

Question 5.
Temperature in Kargil in winter.
Answer:
-48°C.

Question 6.
Temperature in Ganganagar, Rajasthan in the month of June.
Answer:
50°C.

Question 7.
The hills responsible for heavy rainfall in Cherrapunji and Mawsynram.
Answer:
Garo, Khasi and Jaintia Hills.

Question 8.
The winds which provide rainfall to the Tamil Nadu coast.
Answer:
North East Monsoon winds.
Question 9.
The state to receive rain foremost in India.
Answer:
Kerala.

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate

Question 10.
The four seasons of India as per Indian meteorological department.
Answer:
The hot weather season (Summer), the season

Are the sentences right ot wrong? Rewrite the wrong ones.

Question 1.
Brazil experiences wide climatic variation due to its vast longitudinal extent.
Answer:
Wrong – Brazil experiences wide climatic variation due to its vast latitudinal extent.

Question 2.
The winds move in the vertical direction in northern Brazil.
Answer:
Right.

Question 3.
The rainfall reduces on the windward side of the Great Escarpment.
Answer:
Wrong – The rainfall increases on the windward side of the Great Escarpment.

Mark the following on the map with the given information and make an index.

Question 1.
Outline Map of Brazil.

  1. Winds bringing rainfall to Brazil or North East and South East Trade winds.
  2. Drought Quadrilateral or Rainshadow region in Brazil.

Answer:
Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 18
Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 19

Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate

Question 2.
Outline Map of India.

  1. Southwest Monsoon winds or winds bringing rainfall to most parts of India.
  2. Northeast monsoon winds.
  3. Kargil or place recording lowest temperature in India.
  4. Cherrapunji and Mawsynram.
  5. Coromandel coast or the coast receiving rainfall from North East monsoon winds.
  6. Jaisalmer or place recording lowest rainfall in India.
  7. Rain shadow region of Deccan plateau.
  8. Region of low rainfall.
  9. Heavy rainfall region along the western coast.

Answer:
Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 20
Maharashtra Board Class 10 Geography Solutions Chapter 4 Climate 22

Class 10 Geography Textbook Solutions Answers

Heritage Management Question Answer Class 10 History Chapter 9 Maharashtra Board

Std 10 History Chapter 9 Question Answer Heritage Management Maharashtra Board

Balbharti Maharashtra State Board Class 10 History Solutions Chapter 9 Heritage Management Notes, Textbook Exercise Important Questions and Answers.

Class 10 History Chapter 9 Heritage Management Question Answer Maharashtra Board

History Class 10 Chapter 9 Question Answer Maharashtra Board

Question 1.
(A) Choose the correct option from the given options and complete the statement.
(1) Lovre Museum has in its collection the much-acclaimed painting of …………..…….. by Leonardo da Vinci.
(a) Napoleon
(b) Mona Lisa
(c) Hans Sloan
(d) George II
Answer:
(b) Mona Lisa

Maharashtra Board Solutions

(2) …………..…….. at Kolkata is the first museum in India.
(a) Government Museum
(b) National Museum
(c) Chhatrapati Shivaji Maharaj Vastusangrahalay
(d) Indian Museum
Answer:
(d) Indian Museum

(B) Identify and write the wrong pair in the following set.
(1) Maharaja Sayajirao University – Delhi
(2) Banaras Hindu University – Varanasi
(3) Aligarh Muslim University – Aligarh
(4) Jivaji University – Gwalior
Answer:
(1) Wrong Pair: Maharaja Sayajirao University – Delhi

Question 2.
Explain the following statements with reasons.
(1) Archives and libraries publish research journals, informative pamphlets, leaflets, posters, etc.
Answer:

  • Libraries preserve and conserve old’ books and artefacts discovered during excavation.
  • If these documents and artefacts are not exhibited then they are kept in archives.
  • All the historical sources are our assets and they should reach the people.
  • Libraries not only preserve these documents but also carry out research, to know the authenticity.

In order to make the historical events, personalities, and historical research known to the people, archives and libraries publish research journals, informative pamphlets and leaflets.

(2) Only trained persons, who are duly qualified can take up the tasks involved in the work of conservation and preservation.
Answer:

  1. While conducting historical research, one has to do the different tasks carefully like collecting sources, preserving, exhibiting, etc.
  2. The skill required for every task is different. The procedure followed for each task is different as well as the preliminary preparations.
  3. It is essential to know about precautions to be taken.
  4. Hence only trained persons who are duly qualified can take up the tasks involved in the work of conservation and preservation.

Maharashtra Board Solutions

Question 3.
Write notes:
(1) Sthalakosh
Answer:

  • History does not shape itself in oblivion. It takes place at some place.
  • Geographic information is essential to study history.
  • Chakradhar Swami, of Mahanubav sect, visited many villages and details of those villages were noted by Muni Vyas.
  • Siddheshwarshastri Chitrav wrote Prachin Bharatiya Sthalkosh. It gives us information on various places mentioned in Vedic literature, Kautiliya’s Arthashastra, Panini’s Grammar, Ramayana.
  • Mahabharata and also in Buddhist Jain Greek, Chinese and Persian literature.
  • Sthalakosh gives us information on ancient cities and history of those cities. It serves as an important written source of history.

(2) Vishwakosh
Answer:

  • The first Chief Minister of Maharashtra, Shri Yashwantrao Chavan, established the ‘Maharashtra Rajya Sahitya Samskruti Mandal.
  • The objective of making Vishwakosh was to develop and enhance Marathi language and literature.
  • Tarkteerth Lakshmanshastri Joshi was appointed as the chief editor. 20 volumes of Vishwakosh are published till date.
  • Marathi Vishwakosh contains knowledge about all possible subjects which exist in the world. It has important entries about history.

(3) Samdnya Kosh
Answer:

  1. While studying any subject we come across many new words. If their exact meaning is not understood, it can create a lot of confusion.
  2. Terms in history like colonialism, imperialism, liberalisation, globalisation, socialism, communism need explanation and clarity. In order to avoid such confusions, this kosh is prepared.
  3. In Samdnya Kosh, all subject related concepts are collected and explained. Information on what led to the development of concepts is provided.
  4. Samdnya Kosh is very helpful for research students, teachers of history as well as common people.

(4) Saraswati Mahal Granthalay
Answer:

  • The Saraswati Mahal Granthalay was built in 16-17th century in Tanjavur, Tamil Nadu during the reign of Nayak Dynasty.
  • In 1675, Maharaj Vyankojiraje Bhosale conquered ‘ Thanjavur and established his independent rule. He and his successors contributed to the expansion of this library. ‘
  • Sarfojiraje Bhosale contributed the most in expanding and enriching the library. Because of his contribution, to honour him, the library was renamed as ‘The Thanjavur Maharaj Sarfoji’s Saraswati Mahal Library’.

Maharashtra Board Solutions

Question 4.
Give elaborate answers to the following.
(1) Why is library management important?
Answer:
Library is not just about a collection of books but managing it is equally important.

  • Readers can easily get the books they want if the library is properly organised.
  • The location of the book should be easily traced. It saves the time and efforts of readers as well as the librarian.
  • Preservation and conservation of books is done effectively with proper management. It prolongs life of books and causes less damage.
  • If the management is well acquainted, they will have good collection that will make available good quality books to reader.
  • Instead of collecting books on one subject there should be variety in the collection so as to cater of different readers who are very selective in their choices.
  • Facilities like proper catalogues, indexes, computerised systems and modern facilities are provided by effective management of library.
  • If the management is creative it will organise exhibitions, advertise, have seasonal offers for vacations, conduct competitions to increase membership.

(2) Which tasks are important in archives management?
Answer:
The following tasks are important in archives’ management:

  • Important documents to be preserved and care should be taken that document with important contents are preserved in their original condition. Confidentiality of important papers should be maintained.
  • To classify the documents by preparing indexes and to create accurate systems of retrieval of documents.
  • Documents from the archives are supposed to be very reliable.
  • Therefore, it is important to safeguard the papers from humidity, fungus and other environmental factors.
  • It is important to remain updated with latest technology in archive management.
  • Computerise/Digitalse all systems. To make use of information technology in managing libraries and archives.
  • To establish regional and local archives*.
  • To preserve national, cultural and historical heritage.
  • To create a hasslefree system.

Question 5.
Complete the following Concept chart.
Maharashtra Board Class 10 History Solutions Chapter 9 Heritage Management 1
Answer:
Maharashtra Board Class 10 History Solutions Chapter 9 Heritage Management 2

Maharashtra Board Solutions

Project
Obtain information about the important libraries in Maharashtra. Visit the library in your vicinity and learn about its functioning.

Question 6.
Complete the sentences by choosing the correct option:
(a) Documents and artefacts which are not exhibited are kept in …………………… .
(a) Museum
(b) Library
(c) Archives
(d) Government office
Answer:
(c) Archives

(b) ……………………. was the 16th century artist who worked under the patronage of French King Francis I.
(a) Leonardo-da-Vinci
(b) Michaelangelo
(c) Raphael
(d) Dante
Answer:
(a) Leonardo-da-Vinci

(c) The collection in ……………………. increased to a great extent because of the antiquities brought by Napoleon Bonaparte.
(a) National Museum of Natural History
(b) British Museum
(c) Louvre Museum
(d) The Calico Museum
Answer:
(c) Louvre Museum.

(d) ……………………., a natural scientist handed over about 71 thousand objects in his collection to the British Museum.
(a) Sir Hans Sloan
(b) King George II
(c) Napoleon Bonaparte
(d) King Francis I
Answer:
(a) Sir Hans Sloan

(e) The Museum of Natural History which 8 houses more than 12 crore specimens of fossils is in ……………………. .
(a) England
(b) France
(c) Switzerland
(d) USA.
Answer:
(d) USA

(f) Chhatrapati Shivaji Maharaj Vastu-sangrahalay was built to commemorate the visit of ……………………. .
(a) King George I
(b) Queen Elizabeth
(c) Prince Charles
(d) Prince of Wales
Answer:
(c) Prince of Wales

(g) The building of Chhatrapati Shivaji Maharaj Vastusangrahalay is built in ……………………. style.
(a) Mughal
(b) Indo-Greek
(c) Indo-Gothic
(d) Indo-Persian
Answer:
(c) Indo-Gothic

Maharashtra Board Solutions

(h) ……………………. is given status of Grade I heritage building in Mumbai.
(a) Chhatrapati Shivaji Maharaj Railway Terminus
(b) Chhatrapati Shivaji Maharaj Vastusangrahalay
(c) Reserve Bank of India
(d) Jehangir Art Gallery
Answer:
(b) Chhatrapati Shivaji Maharaj Vastusangrahalay.

(i) The Royal Library of Ashurbanipal, the ……………………….. Emperor in Mesopotamia is one of the earliest libraries in the world.
(a) Hispanic
(b) Assyrian
(c) Mongol
(d) Akkadian
Answer:
(b) Assyrian

(j) The ……………………….. in Thanjavur, Tamil Nadu was built in 16th-17th century during the times of Nayak dynasty.
(a) Vyankojiraje Bhosale
(b) Sarfojiraje Bhosale
(c) Saraswati Mahal Granthalay
(d) Vidya Niketan
Answer:
(c) Saraswati Mahal Granthalay

(k) The first official archives of India, the ……………………….. was established in 1891 C.E. in Kolkata.
(a) National Archive
(b) Federal Record of Nation
(c) Archive National
(d) Imperial Record Department
Answer:
(d) Imperial Record Department

(l) There are about five crore Modi documents related to Maratha history in the Pune branch which are referred as ………………………. .
(a) Peshwa Daftar
(b) Bhosale Daftar
(c) British Daftar
(d) Maratha Daftar
Answer:
(a) Peshwa Daftar

(m) ……………………….. prepared during the reign of Chhatrapati Shivaji Maharaj is considered as an important encyclopaedia.
(a) Bharatiya Vyavahar Kosh
(b) Rajavyavaharkosh
(c) Vyavaharik Kosh
(d) Bharatiya Prachin Charitrakosh
Answer:
(b) Rajavyavaharkosh.

Maharashtra Board Solutions

Question 7.
Identify the wrong pair in the following and write it:
(1)

(1) Maharaj Sayajirao UniversityDelhi
(2) Banaras Hindu UniversityVaranasi
(3) Aligarh Muslim UniversityAligarh
(4) Jivaji UniversityGwalior

Answer:
Wrong Pair: Maharaj Sayajirao University – Delhi.

(2)

(1) Sangeetshastrakar va Kalavant Yancha Itiha£Lakshman Dattatray Joshi
(2) Krantikarakancha CharitrakoshS. R. Date
(3) Svantantryasainik CharitrakoshN. R. Phatak
(4) Bharatvarshiya Prachin Aitihasik KoshShridhar Vyankatesh Ketkar

Answer:
Wrong Pair: Bharatvarshiya Prachin Aitihasik Kosh – Shridhar Vyankatesh Ketkar

(3)

(1) Bharatvarshiya CharitrakoshSiddeshwar Shastri Chitral
(2) Marathi VishwakoshRaghunath Bhaskar Godbole
(3) Bharatiya Samskruti KoshPandit Mahadevshastri Joshi
(4) Maharashtriya DnyankoshShridhar Vyankatesh Ketkar

Answer:
Wrong Pair: Marathi Vishwakosh – Raghunath Bhaskar Godbole

(4)

(1) SthanapothiMuni Vyas
(2) Index of Marathi PeriodicalsS. G. Date
(3) First Encyclopaedia of Natural HistoryDenis Diderot
(4) Asiatic Society of BengalFirst museum in India

Answer:
Wrong Pair: First Encyclopaedia of Natural History – Denis Diderot

Maharashtra Board Solutions

Question 8.
Complete the following concept chart:
(1)
Maharashtra Board Class 10 History Solutions Chapter 9 Heritage Management 3
Answer:
Maharashtra Board Class 10 History Solutions Chapter 9 Heritage Management 4

(2)
Maharashtra Board Class 10 History Solutions Chapter 9 Heritage Management 5
Answer:
Maharashtra Board Class 10 History Solutions Chapter 9 Heritage Management 7
(3)
Maharashtra Board Class 10 History Solutions Chapter 9 Heritage Management 8
Answer:
Maharashtra Board Class 10 History Solutions Chapter 9 Heritage Management 9

Maharashtra Board Solutions

Question 9.
Explain the concept :

(a) Archives:
Answer:

  1. An archive is a place where documents with important content in their original conditions are preserved in a scientific manner.
  2. Artefacts and documents which are not exhibited in museums or libraries but have historical importance are kept in archives.
  3. Archives provide documents to the § government, research students and local public when required. Technically, the management of archives is akin to library management.
  4. The documents in the archives are preserved in their original condition and hence no changes can be made to it. Documents from archives are very reliable.

(b) Encyclopaedia:
Answer:

  1. Encyclopaedia can be defined as a systematic compilation of words with meaning, information or knowledge on various topics.
  2. A specific method is adopted to compile the information or to organise the available knowledge. g
  3. Accuracy, meticulousness, objectivity, standardised format of presentation and updated information are the special features of good encyclopaedia.
  4. The objective of making an encyclopaedia is to make the available knowledge easily accessible to the readers.

(c) Dictionaries:
Answer:

  • A type of encyclopaedia giving word meaning arranged in alphabetical order is a Dictionary.
  • Dictionaries help the readers to know meaning of the words and enrich their vocabulary.
  • Dictionaries have word meanings, synonyms and etymology.
  • Dictionaries are of various type like comprehensive dictionaries, dictionaries of terminology, etymology, thesaurus and dictionaries of idioms and proverbs.

(d) Comprehensive Encyclopaedia (Vishwakosh):
Answer:

  • Comprehensive Encyclopaedia (Vishwakosh) means a book which has information on all subjects known, i.e. all subjects under the sun.
  • Vishwakosh is an important medium” of documenting and disseminating information.
  • The information is included in encyclopaedia after thorough research and study.
  • (a) There are two types of encydopaedias – one that includes all subjects like ‘Encyclopaedia Britannica’, Maharashtriya Dnyankosh, Marathi Vishvakosh.
    (b) The other type of encyclopaedia includes comprehensive information on one chosen subject, e.g. Bharatiya Samskruti Kosh, ‘Vyayam Dnyankosh1.

(e) Index:
Answer:

  • Index means a list.
  • Index is at the end of a book which includes alphabetical lists of individuals, subjects, key words, reference books, etc.
  • As the list is in alphabetical order, the reader finds it easy to access required information.
  • The index of Marathi periodicals prepared by S. G. Date and index of ‘Marathyancha Itihasachi Sadhane1 is well-known.

Maharashtra Board Solutions

(f) Charitrakosh (Encyclopaedia of Biographies):
Answer:

  1. Charitrakosh contained biographies of individuals who lived in a particular period and their work which inspired and motivated all the people in the society.
  2. Charitrakosh enables the researcher and scholars to know about the historic period, with regard to social structure and social life.
  3. Bharatvarshiya Prachin Aitihasik Kosh written by Raghunath Bhaskar Godbole is the earliest encyclopaedia of this kind.

(g) Bharatiya Samskruti Kosh:
Answer:

  • It contains the description of Indian history, geography, religions, sects, culture, traditions, beliefs, ethnic and lingual groups residing in our country.
  • Bharatiya Samskruti Kosh throws light on, people living in a particular region, festivals and their culture.
  • Mahadevshastri Joshi edited and published 10 volumes of this Kosh.
  • Chakradhar Swami, of Mahanubav sect, visited many villages and details of those villages were noted by Muni Vyas.

Question 10.
Write short notes:
(a) Louvre Museum:
Answer:

  • The Louvre Museum in Paris was established in the 18th century.
  • It has antiquities collected by the royal family of France.
  • The world famous painting of Mona Lisa by Leonardo-Da-Vinci is kept in this museum.
  • The antiquities brought back by Napoleon Bonaparte on his return from conquests are exhibited in this museum.
  • Presently, the museum has more than 3 lakh and 80 thousand artefacts.

(b) British Museum:
Answer:

  • The British Museum was established in the 18th century in London.
  • It has a collection of 71 thousand objects given by natural scientist Sir Hans Sloan to King George. II.
  • Several books, pictures, specimens of preserved plants are included in it.
  • The ancient objects and artefacts which the Britishers have collected from their colonies are exhibited in this museum.
  • At present, it has about 80 lakh objects in its collection.

(c) National Museum of Natural History:
Answer:

  • The National Museum of Natural History was established in Washington DC in 1846.
  • The Smithsonian Institute managed the museum from its inception. This is a museum of natural history.
  • Remains of animals, plants, organisms and thousands of specimens of fossils are kept in it.
  • It also has human fossils, minerals, rocks, shells, artefacts. All together it has a collection of more than 12 crore (120 million).

(d) Chhatrapati Shivaji Maharaj Vastusangrahalay:
Answer:

  1. Chhatrapati Shivaji Maharaj Vastusangrahalay was built to commemorate the visit of Prince of Wales to India. Some influential residents in Mumbai decided to establish a museum in 1904.
  2. The foundation of the building was laid on 2nd November 1905 and the construction was completed in 1922. The museum was named as ‘Prince of Wales of Western India’. In 1998 C.E. it was renamed as ‘Chhatrapati Shivaji Maharaj Vastusangrahalay.’
  3. The museum building is constructed in Indo-Gothic style and has been awarded the status of Grade I heritage building.
  4. The museum has about 50 thousand antiquities which are divided into three categories, viz.. Arts, Archaeology and Natural History.

Maharashtra Board Solutions

(e) Bharatvarshiya Prachin Aitihasik Kosh:
Answer:

  • Raghunath Bhaskar Godbole wrote Bharatvarshiya Prachin Aitihasik Kosh.
  • It is the first dictionary of Biography in Indian regional language.
  • We get information on Manu and many ancient personalities from Mahabharat.
  • We come to know about legendary people who lived in Bharatvarsha and were renowned.
  • Information about their women, their sons, religions, lands, capitals, mountains and rivers.
  • Which flowed in their land their entire history is given in this encyclopaedia.

(f) Bharatiya Samskruti Kosh:
Answer:

  • Pandit Mahadevshastri Joshi edited and published 10 volumes of Bharatiya Samskruti Kosh.
  • He wrote about Indian history, geography, about people speaking different languages and how they created history.
  • Detailed information on culture of India and festivals, geography, traditions, ideas, is taken into consideration.

Therefore these koshs are useful for readers and research scholars.

Question 11.
Explain the following statements with reasons:

(a) Encyclopaedias should be created in as many languages as possible.
Answer:
Encyclopaedias symbolise the richness and vast gamut of words a language has.

  • It fulfils the curiosity of readers and solves the confusion of a layman.
  • Encyclopaedias inspire to carry out more research as one gets information, knowledge and references.
  • Encyclopaedias provide complete information and knowledge to researchers and students which enriches their previous knowledge.
  • Encyclopaedias represent intellectual and cultural development of a society.
  • Many languages in India and the world are rich and resourceful and hence encyclopaedias should be created in as many languages as possible to raise intellectual level of society.

(b) Encyclopaedia and history are related.
Answer:

  • Encyclopaedias contain information about personalities, events and ancient cultures.
  • In order to gather information it is essential to take the help of history,
  • The common factors between an encyclopaedia and history are objectivity and authenticity.
  • Research scholars of history need to refer to encyclopaedias to find information on events, personalities, concept, places, etc. as encyclopaedias are created with the help of history. Hence encyclopaedia and history are related.

(c) Improved versions of Encyclopaedia or supplements to original editions need to be published.
Answer:

  1. Encyclopaedia is a systematic compilation of information or knowledge on various topics ranging from people, places and events to concepts, word meanings, etc.
  2. With the passage of time the spectrum of knowledge has widened.
  3. With the advent of new technology new words are added. Latest or updated information, knowledge, concepts enrich the language.
  4. The references of the past events change in context of the new research. If all these changes are not incorporated in the encyclopaedias, they will become outdated.

Therefore, encyclopaedia or supplements to original editions need to be published.

Question 12.
Answer the following questions in 25-30 words:
(a) What are the ways to preserve and conserve oral resources?
Answer:

  • Folk songs ancl folk tales are collected and compiled.
  • Collected material is classified. It is interpreted and analysed after compilation.
  • The result of research conducted is then published.

Maharashtra Board Solutions

(b) What steps are taken to preserve written sources?
Answer:
Written sources have great importance in the writing of history. To preserve written sources we need –

  • To collect old books, historical books, pictures, photographs, copper plates, manuscripts and official records and edit them.
  • To decide upon the historical values of collected documents.
  • To exhibit the selected documents.
  • To publish edited documents and research reports.
  • To complete necessary chemical and mechanical process of cleaning for conserving and preserving the documents.

(c) What methods should be followed while studying material source?
Answer:
The following methods should be followed by research scholars while studying material source:

  • To collect the artefacts and classify them according to their historical date and type and prepare indexes.
  • To arrange exhibitions of selected artefacts or their replicas.
  • To write and publish research articles about artefacts.
  • To complete required mechanical and chemical processes of cleaning for conservation and preservation of the collected documents.

(d) Write about the earliest libraries in the world.
Answer:
Libraries were established in different parts of the world in ancient times:

  • The Royal Library of Ashurbanipal is the earliest library dating back to the 7th century B.C.E. in Mesopotamia. The library was owned by the Assyrian emperor.
  • A library was discovered at Alexandria in Egypt which was built in 4th century C.E.
  • The library at Takshashila university in 5th century B.C.E. – 5th century C.E. as it was a noted centre of learning.

(e) Write about format of Encyclopaedias.
Answer:
Format of Encyclopaedias:

  • Encyclopaedias are made according to selected subjects; therefore encyclopaedias are classified according to the subjects.
  • Encyclopaedias are framed according to alphabetical order or as per the order of topics.
  • They provide the exact meaning of words and give information on concepts.
  • The type of order is kept according to the convenience of the readers. An index is provided at the end of the encyclopaedia for this purpose.

(f) Write about Encyclopaedic Literature.
Answer:

  • It appears similar to an encyclopaedia but differs in composition.
  • Information and scholarly articles on all possible aspects of a subject is covered.
  • Experts are called to write on different topics which are compiled to create encyclopaedia
  • ‘Maharashtra Jeevan’ Volume I and II; ‘Shahar Pune’ Volume I and II; Yearbook like Manorama, etc. are the examples of Encyclpaedic Literature.

Maharashtra Board Solutions

(g) Give information on early encyclopaedias made in the west.
Answer:

  • The process of making encyclopaedias started in before 1st century C.E. in the west. Pliny wrote the first encyclopaedia on natural history between 23 C.E.-79 C.E.
  • In the 8th and 9th century, encyclopaedias were written in England, France and in Arab countries.
  • French Philosopher Denis Diderot wrote Encyclopaedia in the 18th century C.E.
  • The important milestone in this process was ‘Encyclopaedia Britannica’ published in 1767 C.E.
  • Wikipedia is considered equivalent to encyclopaedia. The information given in this encyclopaedia is highly reliable and updated.

(h) Write about ancient Indian encyclopaedias.
Answer:

  • In the 7th century C.E., Nighantu, a dictionary (information on ancient medicine) in Sanskrit language was written. Dictionaries like Dhatupath were written.
  • In tjie medieval times, encyclopaedic text was composed by Mahanubhav sect.
  • Amarsimha wrote a thesaurus in Sanskrit ‘Amarkosha’.
  • Raghunath Pandit prepared Rajavyavaharkosh as directed by Chhatrapati Shivaji Maharaj.

Question 13.
Read the following passage and answer the following questions:
(a) Which factors influence Encyclopaedia?
Answer:
The influence of national policies, ethical values and ideals, philosophy and traditions is seen in an encyclopaedia.

(b) What is the common factor between history and encyclopaedia?
Answer:
History and encyclopaedia both are objective.

(c) Explain the statement: Encyclopaedias are looked upon as outstanding achievements of a society.
Answer:

  • The knowledge in all the spheres of society is made accessible to everyone is the major reason behind making an encyclopaedia.
  • What inspires people to create encyclopaedias is the instinct to gain knowledge and spread it.
  • Encyclopaedias reflect the collective intellect and creativity of society.
  • One develops a sense of pride after knowing about nation’s progress through it.

Hence encyclopaedias are looked upon as outstanding achievements of a society.

Question 14.
Give elaborate answers to the following: (3 marks each)

(a) What kind of training is required to study written sources?
Answer:
While studying and handling written sources the following training is required:

  • The students should have knowledge of scripts like Brahmi, Modi, Persian and their development.
  • They should know ways to obtain information about the social organisations and traditions.
  • They should know about the literature and writing style in past societies.
  • They should have basic knowledge about administrative systems, dynasties and cultures of the past.
  • They should study prevalent schools of painting and sculpture.
  • They should be able to collect information on types of paper, know about ink and colour of ancient document and ways to handle.
  • They should be well acquainted with properties of stones and metals used for inscriptions.
  • Articles published earlier on case study should be read.
  • They should know the chemicals and equipment used in various processes of cleaning and preserving the documents.
  • Modern know-how of approaches of managing exhibitions in museums, galleries and information technology.

Maharashtra Board Solutions

(b) What kind of training is required to study material sources?
Answer:
Student should have following knowledge to study material resource:

  • They should have basic knowledge of archaeological method and theory.
  • They should be acquainted with the history of ancient civilisations.
  • They should have knowledge of various techniques of excavation.
  • Stones, minerals and clay used to make artefacts and their characteristics to be studied.
  • They should be well-acquainted with the sources of the material used and their chemical properties.
  • They should also know about various styles of making artefacts and development in their making process.
  • They should have the knowledge and skills of making replicas of artefacts and fossils.
  • They should read research papers previously published on his case study.
  • They should acquire information about the approaches of arranging exhibitions and administrations.
  • They should know about the equipment and chemicals necessary for the cleaning of artefacts.
  • They should be able to write research reports and articles.

(c) Write information about museums in India.
Answer:

  • ‘Indian Museum’ established by the Asiatic Society of Bengal in Kolkata was the first museum in India in 1814.
  • The ‘Government Museum’ established in Chennai in 1851 C.E. was the second museum in India. The National Museum was established in Delhi in 1949.
  • The foundation of the Prince of Wales Museum was laid in Mumbai in 1905. Its construction was completed in 1922. It was renamed as Chhatrapati Shivaji Maharaj Vastusangrahalay in 1998 C.E.
  • At present, there are many museums in various states of India.
  • Many museums are connected to libraries and archives. Some are connected to Universities.
  • Such museums offer courses in Museology also.

(d) Give information on “National Archives of India.
Answer:

  • The first official archive of India was established m Kolkata in 1891 C.E. as the ‘Imperial Record Department’.
  • It was moved to Delhi in 1911 C.E.
  • In 1998 C.E. it was made accessible to the public by the then President of India K.R. Narayanan.
  • It was renamed as ‘National Archive’ (National Archive of India). Archives come under the Ministry of Culture of the Indian Government.
  • This archive has papers, maps, books and micro films preserved in chronological order since 1748.
  • Records in English, Arabic, Hindi, Persian, Sanskrit, Devanagari and Modi languages are preserved.
  • Papers kept in archives are classified into public, oriental, manuscripts and private papers.
  • The National Archives of India is the largest in Asia and technologically advanced.

(e) Explain the statement: A nation should have museums and libraries.
Answer:
Museums and libraries mirror the history of the country and that is the reason they are very valuable for a nation.

  • Museums and Libraries make it easy for the research scholar to write history.
  • Historical events and life stories of important people reach the masses.
  • People get an idea about past social, political and cultural conditions.
  • A visit to museums increases one’s interest.
  • A change in a prejudiced view about history is seen.
  • Information on animals, microorganisms, birds and elements of nature.
  • Museums contribute to the process of gaining and dissemination of knowledge.
  • Ancient historical sources are preserved.
  • Tourism is promoted.
  • It creates opportunities for employment.

Maharashtra Board Solutions

Hence it can be said that it is important for a nation to have museums and libraries as they both are symbols of nation’s progress and glory.

Memory Map
Maharashtra Board Class 10 History Solutions Chapter 9 Heritage Management 9

Class 10 History Textbook Solutions Answers

Historiography Indian Tradition Question Answer Class 10 History Chapter 2 Maharashtra Board

Std 10 History Chapter 2 Question Answer Historiography Indian Tradition Maharashtra Board

Balbharti Maharashtra State Board Class 10 History Solutions Chapter 2 Historiography Indian Tradition Notes, Textbook Exercise Important Questions and Answers.

Class 10 History Chapter 2 Historiography Indian Tradition Question Answer Maharashtra Board

History Class 10 Chapter 2 Question Answer Maharashtra Board

Question 1.
(A) Choose the correct option from the given options and complete the statement.
(1) …………………..…….. was the first Director-General of the Archaeological Survey of India.
(a) Alexander Cunningham
(b) William Jones
(c) John Marshall
(d) Friedrich Max Muller
Answer:
(a) Sir Alexander Cunningham

Maharashtra Board Solutions

(2) …………………..…….. translated the Sanskrit text of ‘Hitopadesh’ in the German language.
(a) James Mill
(b) Friedrich Max Muller
(c) Mountstuart Elphinstone
(d) Sir John Marshall
Answer:
(b) Friedrich Max Muller

(B) Identify and write the wrong pair in the following set.
(1) ‘Who were the Shudras’ – subaltern History
(2) ‘Stri-Purush Tulana’ – Feminist writing
(3) ‘The Indian War of Independence 1857’ – Marxist History
(4) Grant Duff – Colonial History.
Answer:
(1) Right Pair: ‘Who were the Shudras’ – subaltern History
(2) Right Pair: ‘Stri-Purush Tulana’ – Feminist writing
(3) Wrong Pair: ‘The Indian War of Independence 1857’ – Marxist History
(4) Right Pair: Grant Duff – Colonial History.

Question 2.
Explain the following with its reason.
(1) Writing of the regional history received a momentum.
Answer:

  • Indian historians trained in the British educational system showed an inclination to restore the self-esteem of Indians They started writing Nationalistic historiography.
  • Historians from the different regions of India criticised the prejudiced history of India written by the British officers.
  • Their attention was drawn towards geographic conditions and history of different regions of India.
  • The nationalistic historiography helped in triggering the independence movement.
  • It provided a momentum to the writing of regional histories for e.g.
  • Nationalistic writings in Maharashtra were inspired by Vishnu Shastri Chiplunkar.

Hence, writing of the regional history received momentum.

(2) Bakhar is an important type of historical documents.
Answer:

  • Bakhars are important source of history like coins, inscriptions, texts, copper plates and travelogues.
  • Bakhars contain eulogies of the heroes, historic events, stories of lives of great men and description of battles.
  • It portrays a picture of prevalent society, religions and economic life.
  • Bakhars are of various types which contain biographies of kings, dynastic history, description of events, sects, autobiographies, mythologies, administration of kings, etc.
  • These descriptions are helpful for writing historiography.
  • Among well-known Marathi. Bakhars ‘Sabhasad Bakhar’ written by Krishnaji Anant Sabhasad requires a special mention Bhausahebanchi Bakhar and Panipatachi Bakhar describe the ‘Battle of Panipat’.

Hence, Bakhars are important type of historical document.

Maharashtra Board Solutions

Question 3.
Write detailed Answers the following questions in detail.
(1) What is Marxist History?
Answer:

  1. In the post-independence era, new trends emerged in writing Indian historiography. Marxist historiography is prominent among them.
  2. Historiography which is based on ideas of Karl Marx is known as Marxist Historiography. In Marxist Historiography, more importance was given to class struggles.
  3. Marxist Historiography reflects concerns for means and modes of production as well as the industrial relations. These became centre of writings of the Marxist historians.
  4. How every social event affects the life of people was analysed and it became the theme of Marxist historians Marxist historians studied the transitions that took place in the caste system.
  5. Notable Indian historians who adopted Marxist ideologies were Damodar Kosambi, Comrade Shripad Dange, Sharad Patil and Ram Sharan Sharma.
  6. Their writings reflected Marxist ideology. Comrade Dange was the founder member of the Indian Communist Party

(2) What is the contribution of Itihasacharya V.K. Rajwade to historiography?
Answer:

  1. V.K. Rajwade is well-known for his writings in Marathi on subjects like history, linguistics, etymology and grammar. His contributions are as follows:
  2. He compiled and edited 22 volumes of Marathyanchya Itihasachi Sadhane.
  3. He stated that history is the all-inclusive image of the past societies.
  4. V. K. Rajwade was of the view that history does not include only the stories of political images, conspiracies and Wars for seizing power.
  5. He was of the firm opinion that we should write our own history and insisted that history . should be written only using the authentic sources.
  6. He was of the opinion that description of any human event in historiography should have balanced combination of three factors namely – Time, Space and Personalities.

Question 4.
(a) Complete the following chart.

HistorianName of the Book
James Mill‘The History of British India’
James Grant Duff……………………………………………
……………………………………………‘The History of India’
S.A. Dange……………………………………………
……………………………………………‘Who were the Shudras’

Answer:

HistorianName of the Book
James MillThe History of British India
James Grant DuffA History of Mahrattas
Mountstuart ElphinstoneThe History of India
S. A. DangePrimitive Communism to Slavery
Dr. Babasaheb AmbedkarWho Were the Shudras

Maharashtra Board Solutions

(b) Complete the following concept chart.
Maharashtra Board Class 10 History Solutions Chapter 2 Historiography Indian Tradition 1
Answer:
Maharashtra Board Class 10 History Solutions Chapter 2 Historiography Indian Tradition 2

Question 5.
Explain the following concepts.
(1) Orientalist historiography.
Answer:

  1. In the later part of the eighteenth century many European scholars felt curious to know about civilisations and countries of the East.
  2. These scholars who studied the Indian Civilization had respect and admiration for it. They were known as ‘Orientalists’.
  3. They studied similarities between Sanskrit and some of the European languages, focussing more on Vedic traditions and Sanskrit literature.
  4. It resulted in the notion that an ancient language could be the mother of all Indo-European languages.
  5. Notable Orientalist scholars are Friedrich Max Muller and William Jones.

(2) Nationalistic historiography.
Answer:

  1. English education started in India in the nineteenth century. The Indian historians who were trained in English education system realised the glory of their past.
  2. They showed an inclination to restore the pride in the ancient glory of India and the self-esteem of the Indian readers.
  3. They laid the foundation of Nationalistic writing. Nationalistic writings in Maharashtra were inspired by ‘Vishnushastri Chiplunkar’.
  4. Nationalistic historians opposed the prejudiced history written by the British officers.
  5. Mahadev Govind Ranade, Vinayak Damodar Savarkar, Ramesh Chandra Majumdar are renowned Nationalistic historians.
  6. Nationalistic historiography inspired freedom struggle against the Britishers and gave momentum to write about regional history. While glorifying the past, at times they are blamed for ignoring to critically analyse the truth.

Maharashtra Board Solutions

(3) Subaltern history.
Answer:

  • History of deprived classes or communities who were deprived of all rights is known as subaltern history.
  • The seeds of subaltern history can be traced in the Marxist history. Italian historian Antonio Gramsci has special importance in writing the subaltern history.
  • He presented the idea that history should be written starting from the bottommost ranks of people in the society.
  • Ranjit Guha, an Indian historian, has given prominence to subaltern history and played a major role in establishing it as an important academic school of historiography.
  • Similar thoughts were expressed by Mahatma Phule and Dr. Babasaheb Ambedkar which can be found in their writings.

Project
Prepare an illustrated manuscript with the help of the internet giving more information about the historians mentioned in this lesson.
Answer:

Memory Map
Maharashtra Board Class 10 History Solutions Chapter 2 Historiography Indian Tradition 3

Question 6.
Complete the sentences by choosing a correct option:
(a) The first written document found in India was inscribed during the rule of Emperor ……………….. .
(a) Akbar
(b) Harshavardhan
(c) Ashoka Maurya
(d) Aurangzeb
Answer:
(c) Ashoka Maurya

(b) Banabhatta wrote King Harsha’s biography titled ………………… in the 7th century CE.
(a) Meghdoot
(b) Rajtarangini
(c) Rasratnakar
(d) Harshacharit
Answer:
(d) Harshacharit

Maharashtra Board Solutions

(c) In the 12th century C.E., ………………… wrote a book ‘Rajtarangini’ about history of Kashmir.
(a) Banabhatta
(b) Kalhana
(c) Ziquddin Barani
(d) Patanjali
Answer:
(b) Kalhana.

(d) The historians in the courts of Muslim rulers were influenced by ………………… historiography.
(a) Greek and Roman
(b) Arabic and Persian
(c) English and French
(d) Arabic and Urdu
Answer:
(b) Arabic and Persian

(e) We get information about the rule of Chhatrapati Shivaji Maharaj from ……………….. .
(a) Bhausahebanchi Bakhar
(b) Panipatachi Bakhar
(c) Sabhasad Bakhar
(d) Holkaranchi Bakhar
Answer:
(c) Sabhasad Bakhar

(f) ‘Bhausahebanchi Bakhar’ describes Battle of ……………….. .
(a) Raigad
(b) Panipat
(c) Plassey
(d) Vasai
Answer:
(b) Panipat

(g) The first book written by a British historian on Indian history is ……………….. .
(a) The History of India
(b) The History of Maharaj
(c) The History of British India
(d) The Sacred Books of the East
Answer:
(c) The History of British India

(h) Nilkanth Janardan Kirtane and V.K. Rajwade exposed the limitations in writings of ……………….. .
(a) Friedrich Max Muller
(b) Colonel Todd
(c) Grant Duff
(d) William Wilson Hunter
Answer:
(c) Grant Duff

(i) …………………, an Indian historian played a major role in establishing subaltern history as an important academic school of historiography.
(a) Comrade Sharad Patil
(b) Ranjit Guha
(c) Dharmanand Kosambi
(d) Ram Sharan Sharma
Answer:
(b) Ranjit Guha.

Maharashtra Board Solutions

(j) The writings of British officials on India display strong influence of ……………….. .
(a) Marxism
(b) Colonalism
(c) Feminism
(d) Capitalism
Answer:
(b) Colonalism

(k) The Nationalistic Historiography in Maharashtra was inspired by works of ……………….. .
(a) Vinayak Damotfar Savarkar
(b) Ramkrishna Gopal Bhandarkar
(c) Vishnushastri Chiplunkar
(d) Justice Mahadev Govind Ranade
Answer:
(c) Vishnushastri Chiplunkar

(l) The two volumes written by ……………….. on Indian history show impartial treatment of the subject.
(a) Colonel Todd
(b) William Wilson Hunter
(c) Grant Duff
(d) James Mill
Answer:
(b) William Wilson Hunter

(m) ‘Primitive Communism to Slavery’, represents ……………….. the historiography.
(a) Colonial
(b) Orientalist
(c) Nationalistic
(d) Marxist
Answer:
(d) Marxist

(n) ‘Stripurush Tulana’ was written by ……………….. is acknowledged as first feminist book in India.
(a) Meera Kosambi
(b) Dr. Sharmila Rege
(c) Tarabai Shinde
(d) Pandita Ramabai
Answer:
(c) Tarabai Shinde.

Question 7.
Identify the wrong pair and write it:
(1)

Name of the BookTypes of Historiography
(1) Who were the(a) Subaltern history
Shudras(July ’19)
(2) Stripurush Tulana(b) Feminist writing
(3) The Indian War of Independence(c) Marxist History
(4) Grant Duff(d) Colonial History

Answer:
Wrong pair: The Indian War of Independence – Marxist History.

(2)

Name of the BookHistorian
(1) The Rise of the Maratha Power(a) Justice Mahadev Govind Ranade
(2) Marathyanchya Itihasachi Sadhane(b) Vishnushastri Chiplunkar
(3) Maratha Riyasat(c) Govind Sakharam Sardesai
(4) Gulamgiri(d) Mahatma Phule

Answer:
Wrong pair: Marathyanchya Itihasachi Sadhane- Vishnushastri Chiplunkar.

Maharashtra Board Solutions

(3)

WorkScholars
(1)  Bharat Itihas Samshodhak Manda(a)   V. K. Rajwade
(2)  Asiatic Society(b)   Sir William Jones
(3)  Inspiration for Nationalistic historiography(c)  Vishnushastri Chiplunkar
(4)  Discovery of Harappan Civilization(d)  James Mill

Answer:
Wrong pair: Discovery of Harappan CIvilization – James Mill.

(4)

HistoriographyHistorian
(1) Nationalistic Historiography(a) V. D. Savarkar
(2) Marxist Historiography(b) Damodar Kosambi
(3) Subaltern Historiography(c) Ramchandra Guha
(4) Feminist Historiography(d) Sharmila Rege

Answer:
Wrong pair: Subaltern Historiography – Bamchandra Guha.

Question 8.
Do as directed:
(1)

Answer:

(2)

Answer:

(3) Prepare a flow chart on Literary work of Max Muller:
Answer:
Maharashtra Board Class 10 History Solutions Chapter 2 Historiography Indian Tradition 8

Maharashtra Board Solutions

Question 9.
Explain the concepts:
(a) Colonial Historiography:
Answer:

  • The history written by British officers and Christian missionaries in support of British rule and colonialism is known as Colonial historiography.
  • It reflected their prejudiced mindset about Indian culture. They ridiculed the Indian culture as being primitive.
  • Their writings justified the colonial British rule.
  • The distinct example of colonial historiography is ‘Cambridge History of India’ in five volumes published during 1922-1937.

Question 10.
Write short notes:
(a) Alexander Cunningham:
Answer:

  • British rulers started archaeological exploration and research in India in the 20th century.
  • They established the Archaeological Survey of India and appointed Sir Alexander Cunningham as its first Director General.
  • He mainly chose the sites mentioned in the Buddhist texts for excavations.
  • Many other ancient sites were excavated under his supervision.

(b) James Mill:
Answer:

  • James Mill, a‘British historian, had written the monumental book ‘The History of British India’. He published it in three volumes in 1817.
  • The book is important as it was the first book written by a British officer on Indian history.
  • The book: lacks objective perspective and is prejudiced about various aspects of the Indian culture.

(c) Grant Duff:
Answer:

  • Grant Duff, a British officer, wrote the book ‘A History of Mahrattas’, in three volumes.
  • His name stands out among the British officers who wrote about Maratha history.
  • The tendency of the British historians to condemn Indian culture and history is found in Grant Duff’s writing.
  • Historians Nilkanth Janardan Kirtane and Vishwanath Kashinath Rajwade exposed the limitations of Grant Duff’s writings.

(d) Indian Feminist Historiography:
Answer:

  1. Tarabai Shinde, Pandita Ramabai and Dr. Rukhamabai were feminist historians before independence.
  2. They wrote about employment of women, their right to political equality, treatment meted out to women at their workplace and gender discrimination.
  3. A lot of literature is available unfolding the viewpoint of Dalit women on problems like social class, caste, etc. In the post-independence era.
  4. Dr. Sharmila Rege included her essays on the autobiographies of Dalit women in her book, ‘Writing Caste, Writing Gender: Reading Dalit Women’s Testimonies.’
  5. Meera Kosambi’s book, ‘Crossing Thresholds: Feminist Essays in Social History’ contains essays on the life stories of women like Pandita Ramabai and Dr. Rukhamabai, the first practising lady Doctor of India.

Maharashtra Board Solutions

Question 11.
Explain the following with reasons:
(a) The history of Indian civilization dates back to 3rd millennium BCE.
Answer:

  • Indian civilisation is among the various ancient civilisations in the world.
  • Excavations at Harappa took place in 1920 under the supervision of Sir John Marshall, then Director General of Archaeological Survey of India (ASI). This led to the discovery of Harappan Civilization.
  • This discovery prqved helpful to trace the antiquity of Indian history which dates back 3rd millennium BCE or earlier.

(b) It became necessary to rethink of women’s position in history.
Answer:

  • For a considerable period of time, mainly male scholars were involved in the writing of Indian history.
  • It was obvious that the perspective was male-dominated.
  • The work of the women historians was neglected for long. So it became important to highlight this fact.
  • It was a huge challenge in front of the women: historians to compile the work and do research which would prove to be a medium to put forth their status in society.

Hence, it became necessary to rethink about the position of women in history.

(c) Govind Sakharam Sardesai was addressed as ‘Riyasatkar’.
Answer:

  • Govind Sakharam Sardesai had a momentous achievement to his credit by publishing ‘Maratha Riyasat’.
  • He published several volumes of Maratha history.
  • His work became so popular that people began to address him as ‘Riyasatkar’.

Question 12.
Answer the following in 25-30 words:
(a) Which things are included in the description by Emperor Babur in bis autobiography?
Answer:
Babur, the founder of the Mughal empire, in his autobiography entitled Tuzuk-i-Babari describes:

  • The battles fought by him.
  • Recordings of minute observations of various regions and cities visited by him noting minute observations.
  • Observation of the local customs, economy, fauna and flora of the region travelled by him.

(b) What is the contribution of Swatantryaveer Savarkar to nationalistic historiography?
Answer:

  1. The writings of Swatantryaveer Savarkar were infused with nationalistic ideas. He looked at the revolt of 1857 as the First War of Independence and wrote the ‘book ‘The Indian War of Independence, 1857’.
  2. His book gave inspiration to Nationalistic historiography which helped in triggering independence movement of the Indian people against the British. Even the writing of regional history got momentum.
  3. The attention of historians was drawn towards the history and geographic conditions and variations in the South Indian region.

(c) Write about the contribution of Banabhatta in writing historiographies.
Answer:

  • It was considered an important step in the Indian historiography to write biographies of kings and dynastic histories.
  • Banabhatta wrote Harshacharit, King Harsha’s biography, in the 7th century C.E.
  • It portrays a realistic picture of the social, economic, political, religious and cultural life during the period when King Harsha ruled.

Maharashtra Board Solutions

(d) Write information on ‘Rajtarangini’.
Answer:

  • Rajtarangini was written by Kalhana in the 12th century C.E. It traces the history of Kashmir.
  • These eight books contain records of dynasties which ruled Kashmir, local traditions, coins, remains of monuments and inscriptions. Kalhana wrote the text after critically examining the various sources.
  • The book is a good example to show how scientific technique is applied in writing history.

(e) Write about historiography in the post-independence period.
Answer:

  • In the post-independence period, along with dynastic history, cultural, social and economic histories were also written.
  • New schools of thought like Marxist, Subaltern and Feminist History were included in historiography.
  • The scholars in this era began to feel the need of writing histories of various communities, sciences, economic systems, political ideologies, cultural aspects, etc.
  • They presented the new schools of ideologies. These changes increased the scope of writing historiography.

(f) What are the objectives of writing history according to Ziauddin Barani?
Answer:

  • Ziauddin Barani explained the ’ objectives of historiography. According to him, the duty of a historian does not end with recording the ruler’s valour and welfare policies.
  • He should also write about the ruler’s failings and incorrect policies.
  • He further adds that a historian should also take into account the impact of the teachings of the wise, the learned and the saints on the cultural life of people.

Thus, Ziauddin Barani holds important place as he expanded the scope of historiography.

(g) What are the salient features of writings of historians in the courts of Mughal emperors?
Answer:
The salient features of writings of historians in the courts of Mughal emperors are:

  • Historians praised the Mughal emperors in their writings.
  • Their loyalty towards the rulers is exhibited.
  • The custom of adding suitable poetic quotes was introduced. The historians started to include beautiful pictures as well.

(h) Write about the importance of Tarabai Shinde in writing feminist historiography. *
Answer:

  • Tarabai Shinde has a prominent place among the feminist historians who wrote about women in the nineteenth century, i.e. pre-independence era.
  • She wrote a book Stripurush Tulana which was published in 1882. It is acknowledged as the first feminist book published in India.
  • Her writings attacked the male-dominated social system and the caste system.

Question 13.
Read the given passage and answer the questions given below:
(a) Complete the graphical presentation:

Answer:

(b) What was considered more important by the historians in the Mughal Court?
Answer:
Praising the Mughal emperor and exhibition of loyalty was considered more 8 important by the historians in the Mughal Court.

(c) Why is Abbul Fazl’s writing considered realistic?
Answer:

  • Abul Fazl’s Akbarnama reflects his critical viewpoint.
  • He collected authentic historical documents for this book.
  • He scrutinized these documents to affirm their reliability. Therefore, his method is looked upon as devoid of bias and hence realistic.

Maharashtra Board Solutions

Question 14.
Write detailed answers to the following questions:
(a) Write information about historiography in the ancient period of India.
Answer:

  • In the ancient period, stories of great deeds of ancestors, mythological lore, memories of social transitions were preserved through oral traditions.
  • The art of writing was mastered by Indians as early as 3rd millennium B.C.E. But Harappan script is not deciphered yet.
  • The earliest written documents found in India were in the form of inscriptions that are as old as 3rd century B.C.E. during the period of Emperor Ashok. His edicts are inscribed on natural rocks and stone pillars.
  • Inscriptions started to occur on coins, metal images and sculptures and also on copper plates from the 1st century B.C.E.
  • Epics like Ramayana, Mahabharat, Puranas, Jain and Buddhist texts are important sources of ancient Indian literature.
  • Historical accounts by Indian authors and travelogues by foreign travellers are also important sources of history.

(b) Explain the works of Dr. Babasaheb Ambedkar and Mahatma Phule in Subaltern History.
Answer:

  • History of the deprived classes expressed in folklore was known as ‘Subaltern History’.
  • Similar thoughts were expressed by Mahatma Jotirao Phule and Dr. Babasaheb Ambedkar.
  • Mahatma Phule unfolded the history of the Shudratishudra communities in his book ‘Gulamgiri’.
  • He drew attention to show how women, Shudras and Atishudras were exploited under the name of religion.
  • Dr. Ambedkar focused on the idea that in spite of having a significant role in shaping the cultural and political aspects of India, the role of Dalits was not duly acknowledged in colonial and nationalistic historiography.
  • Injustice done to the Dalits was mostly written by him. ‘Who Were the Shudras’ and ‘The Untouchables’ are his books which can be cited as examples of subaltern history.

Question 15.
Observe the given picture and answer the question given below:

Maharashtra Board Solutions

(a) Write a short note on Copper-plate inscriptions.
Maharashtra Board Class 10 History Solutions Chapter 2 Historiography Indian Tradition 11
Answer:

  • The copper-plate shown in the picture was found at Sohagaura in Gorakhpur district in Uttar Pradesh.
  • It is supposed to be from the Mauryan period and the inscription on it is in Brahmi script.
  • Many symbols are inscribed on it ‘Tree-in-railing’ and ‘Mountain’ at the beginning of inscription occur on punch marked coins.
  • A structure created on four pillars is indicative of a granary.
  • The inscriptions have a record of royal order that the grains stored in the granary should be distributed carefully.
  • This order is suggestive of precautionary measures taken during famine.

Class 10 History Textbook Solutions Answers

Mass Media and History Question Answer Class 10 History Chapter 5 Maharashtra Board

Std 10 History Chapter 5 Question Answer Mass Media and History Maharashtra Board

Balbharti Maharashtra State Board Class 10 History Solutions Chapter 5 Mass Media and History Notes, Textbook Exercise Important Questions and Answers.

Class 10 History Chapter 5 Mass Media and History Question Answer Maharashtra Board

History Class 10 Chapter 5 Question Answer Maharashtra Board

Question 1.
(A) Choose the correct option from the given options and complete the statement.

(1) The first English newspaper in India was started by ………………………….. .
(a) James Augustus Hickey
(b) John Marshall
(c) Allen Hume
Answer:
(a) James Augustus Hickey

Maharashtra Board Solutions

(2) Television is an ………………………….. medium.
(a) visual
(b) audio
(c) audio-visual
Answer:
(c) audio-visual

(B) Identify and write the wrong pair in the following set.
(1) ‘Prabhakar’ – Acharya P.K. Atre
(2) ‘Darpan’ – Balshastri Jambhekar
(3) ‘Deenbandhu’ – Krishnarao Bhalekar
(4) ‘Kesari’ – Bal Gangadhar Tilak
Answer:
(1) Wrong Pair: ‘Prabhakar’ – Acharya P.K. Atre

Mass Media And History Class 10 Question 2.
Write short notes :
(1) The role of newspaper in the Indian struggle for independence
Answer:
Newspapers played an important role in the Indian independence struggle. It is as follows

  • Newspapers served as an important medium to create awareness during those times.
  • They described greatness of Indian culture and history to gather support of masses for the freedom movement.
  • They supported social, political and religious movements and opposed imperialism.
  • They discussed various social and political issues.
  • The ideas of social reformers and various organisations active in independence struggle reached people through newspapers.

(2) Why do we need mass media?
Answer:
Mass media includes print and electronic and various new media.

  • It facilitated free flow of information to all strata of the society and brought the world closer.
  • Editorials, various columns and supplements are essential parts of newspapers.
  • Readers also get a platform to voice their opinions. In fact, newspapers can help to make democracy stronger.
  • Akashrani broadcasted various programmes of the government as well entertainment.
  • Awareness creating programmes. It fulfill the need of the government to connect with people.
  • Television is an Audio-Visual medium which has made it possible to cross the inherent limitations of newspapers.
  • Radio to show the actual visuals of an event to people.
  • Mass Media is very important as it plays an important role to strengthen democracy.

(3) Mass Media and professional opportunities.
Answer:
There are many professional opportunities available in printed, electronic and digital media.

  • Writers, columnists, editors are required to write articles, columns and editorials in news-papers.
  • Newspapers also require reporters to gather news and technicians to work in the press.
  • There is requirement of actors and technicians in electronic media.
  • Artists are required to present programmes on television, in the same way news presenters, anchors are required.
  • If the articles, columns and programmes are based on history, an expert in history is required.

Mass Media And History Class 10 Question Answer Question 3.
Explain the following statements with reasons.
(1) Any information received through mass media needs to be reviewed critically.
Answer:

  • Information provided in the media may not represent the exact truth. We need to scan it carefully.
  • We have to understand idealistic and investigative motives of newspapers, government policies and prevailing social conditions behiid the newspiece.
  • The information received through Mass Media might be prejudiced or give a one-sided idea.
  • ‘Stern’, a German weekly magazine, purchased and published a number of so called handwritten diaries of Hitler.
  • It then sold them to a number of publication companies.
  • However, later it was proved that those diaries were forged. Hence it is essential to verily the information received through Mass Media.

(2) Knowledge of history is essential for newspaper articles.
Answer:

  1. In order to unfold the background of an event in the news, we have to resort to history.
  2. Some columns are based on historical events. These columns provide historical information about economical, social and political events in the past.
  3. Newspapers publish supplements in addition to the regular edition or special issues to mark the completion of 50 or 100 years of an event. On such occasions, one has to review history of that particular event.
  4. Even while writing columns like what happened in history on this day it is necessary to know past event. Hence, the knowledge of history is essential for writings of such type.

(3) Television is the most popular medium.
Answer:

  • Television being an audio-visual medium brings us into contact with events in an exciting and clarifying way.
  • It crossed the inherent limitations of newspapers and radio to show actual visuals.
  • It becomes possible for people to watch all the national and international events sitting at home.
  • Social problems, discussion on education and economics and political events are viewed by people.
  • In 1991, Indian government granted permission to private, national and international channels to telecast in India.
  • Television became a treasure house of entertainment.

Therefore, the television is the most popular medium.

Class 10 History Chapter 5 Questions And Answers Ssc Board Question 4.
Read the following extract and answer the questions.
Radio: ‘Indian Broadcasting Company’ (IBC), a private radio company was the first one to broadcast daily programmes. Later the same company was taken over by the British Government and named as, ‘Indian State Broadcasting Service (ISBS). On 8th June 1936 it was renamed, as ‘All India Radio (AIR)’.

After Independence, AIR became an integral part of the Ministry of Information and Broadcasting (India). Initially, it broadcasted Governmental programmes and schemes. It was named as ‘Akashvani’ on the suggestion of the famous poet Pandit Narendra Sharma. Akashvani broadcasts various entertainment, awareness creating and literary programmes. It also broadcasts special programmes for farmers, workers, the youth and women. The ‘Vividh Bharati’ programmes are broadcasted in 24 regional languages as well as 146 dialects of Indian languages. Lately, various new channels like ‘Radio Mirchi’ are providing radio services.

(1) Akashavani (AIR) is an integral part of which ministry?
Answer:

  1. Indian Broadcasting Company, a private radio company was taken over by the British Government in 1927 and named ‘Indian State Broadcasting Service (ISBS)’. On 8th June 1936, it was renamed as ‘All India Radio (AIR)’.
  2. AIR became integral part of the Ministry of Information and Broadcasting after independence. It was renamed Akashvani on the suggestion of Pandit Narendra Sharma.
  3. Initially it used to broadcast Government’s programmes and schemes. Later it started broadcasting various entertainment, awareness creating and literary programmes.
  4. Akashvani started ‘Vividh Bharati1 programmes. It broadcasts special programmes for farmers, workers, the youth and women.
  5. Vividh Bharati Programmes are broadcast in 24 regional languages and 146 dialects.

(2) What was the new name of IBC?
Answer:
Indian Broadcasting Company (IBC) was taken over by the British Government. It was named as the Indian State Broadcasting Services. (ISBS). On 8th June 1936, it was renamed as ‘All India Radio’ (AIR).

(3) In how many regional languages and local dialects are ‘Vividh Bharati’ programmes broadcasted?
Answer:
People get access to news through social media like Twitter, Instagram, Facebook, YouTube and from web news portals, web channels. This information is available in English and many other languages.

(4) How AIR was named ‘Akashavani’?
Answer:
AIR was named as Akashvani on the suggestion of the famous poet Pandit Narendra Sharma.

Question 5.
Complete the following concept chart.

NewspapersRadioTelevision
Beginning/Background
Nature of information/programmes
Functions

Answer:

NewspapersRadioTelevision
Background/BeginningJames Augustus Hickey started Calcutta General Advertiser or Bengal Gazette on 29th January, 1780. It was the first newspaper in English.A private radio station was started known as Indian Broadcasting Company.First Doordarshan centre was started in Delhi.
Information ProgrammesNews, articles, columns, opinions of the people, editorials, advertisements etc. are published.Along with entertainment programmes, have literary, informative programmes on farmers, women and educative values.Events around the world, movies, music, information about environmental and historical places, sports are shown either live or recorded.
Functions(1) Report daily news
(2) Public awareness and mass education.
(3) Provide information and strengthen democracy.
(4) Oppose injustice and give publicity to developmental work.
(1) Provide news from different sectors.
(2) Entertain through music, dramas, songs, etc.
(3) Present social problems and educate the masses about it.
(4) Conduct discussions on various issues ranging from the environment to culture.
(1) Telecast daily events and entertain.
(2) Educate the masses.
(3) Publicise programmes which are for social benefit.
(4) Bring about social awakening opposing evil traditions and practices.

Project
Write a review of a historical serial that you have watched.

Memory Map
Maharashtra Board Class 10 History Solutions Chapter 5 Mass Media and History 1

Question 6.
Complete the sentences by choosing a correct option:
(a) ………………….. is the first newspaper in Marathi.
(a) Deenbandhu
(b) Prabhakar
(c) Darpan
(d) Kesari
Answer:
(c) Darpan

(b) 6th January is celebrated as ………………….. day in Maharashtra.
(a) Periodical Day
(b) Newspaper Day
(c) Printing Day
(d) Journalist Day
Answer:
(d) Journalist Day

(c) The letters ‘Shatpatre1 published in Prabhakar were written by ………………….. .
(a) Lokmanya Tilak
(b) Lokhitvadi
(c) Mahatma Gandhi
(d) Justice Ranade
Answer:
(b) Lokhitvadi.

(d) The honour of printing illustrations for the first time in an Indian newspaper goes to ………………….. .
(a) Dnyanoday
(b) Darpan
(c) Prabhakar
(d) Kesari
Answer:
(a) Dnyanoday

(e) Deenbandhu was started by ………………….. who was a close associate of Mahatma Phule.
(a) Dr. Babasaheb Ambedkar
(b) Lokmanya Tilak %
(c) Narayan Meghaji Lokhande
(d) Krishnarao Bhalekar
Answer:
(d) Krishnarao Bhalekar

(f) ………………….. newspaper was started by Agarkar and Lokmanya Tilak.
(a) Deenbandhu and Induprakash
(b) Darpan and Prabhakar
(c) Dnyanoday and .Digdarshan
(d) Kesari and Maratha
Answer:
(d) Kesari and Maratha

(g) Balshastri Jambhekar started ………………….. the first monthly magazine in Marathi.
(a) Digdarshan
(b) Prabhakar
(c) Darpan
(d) Dnyanoday
Answer:
(a) Digdarshan

(h) ………………….. was acknowledged as the fourth pillar of democracy.
(a) Representatives
(b) Periodicals
(c) Newspaper
(d) Books
Answer:
(c) Newspaper.

(i) The first English news bulletin was broadcast on 23rd July, 1927 from the …………………… radio station.
(a) Kolkata
(b) Madras
(c) Mumbai
(d) Dblhi
Answer:
(c) Mumbai

(j) Dr. Rajendra Prasad, the first President of India inaugurated the …………………… Doordarshan centre.
(a) Mumbai
(b) Bangalore
(c) Lucknow
(d) Delhi
Answer:
(d) Delhi

(k) Newspapers published special supplements or a special issue to commemorate occasions like completion of seventy-five years of …………………… in 2017.
(a) Khilafat Movement
(b) Non Co-operation Movement
(c) Civil Disobedience Movement
(d) Quit India Movement
Answer:
(d) Quit India Movement

(l) ……………………, a German weekly magazine, had purchased a number of so called handwritten diaries that were later proved forged.
(a) Time Magazine
(b) Statesman
(c) Stern
(d) Reuters
Answer:
(c) Stern

(m) Akashvani has preserved recordings of all speeches delivered by the …………………… on 15th August.
(a) President
(b) Wee President
(c) Prime Minister
(d) Army General
Answer:
(c) Prime Minister

(n) Akashwani comes under the Ministry of …………………… of the Indian Government.
(a) Social welfare
(b) Human Resource and Development
(c) Information and Broadcasting
(d) Education Technology
Answer:
(c) Information and Broadcasting.

Question 7.
Identify the wrong pair in the following and write it:

NewspaperEditor
(1)  Prabhakar

(2)  Darpan

(3)  Deenbandhu

(4)  Kesari

(a)   Acharya R K. Atre

(b)   Balshastri Jambhekar

(c)  Krishnarao Bhalekar

(d)   Bal Gangadhar Tilak

Answer:
Wrong pair: Prabhakar – Acharya R K. Atre

(2)

NewspaperIssues
(1)  Prabhakar

(2)  Induprakash

(3)  Deenbandhu

(4)  Kesari

(a)   History of French revolution

(b)  Advocated widow re­marriage

(c)  Information on Telegraph

(d)   Voiced social and political problems.

Answer:
Wrong pair Deenbandhu – Information on Telegraph

(3)

Newspaper/Magazine/BookEditor
(1) Pragati(a) Tryambak Shankar Shejwalkar
(2) Digdarshan(b) Narendra Sharma
(3) Deenbandhu(c) Krishnarao Bhalekar
(4) Discovery of India(d) Pandit Nehru

Answer:
Wrong pair: Digdarshan – Narendra Sharma

Question 8.
Do as directed:
(a) Complete the graphical description

Answer:

(2)

Answer:

(b) Show the progress of Indian television Time-line:

Answer:

Question 9.
Explain the following concepts:

(a) Electronic or Digital Journalism or Web Journalism.
Answer:

  1. In the modem times, the computer and internet have become indispensable parts of printing and publishing process. Computer technology has led to the widespread practice of digital journalism.
  2. Websites run by newspapers are basically extensions of newspapers themselves. Modern periodicals are part of electronic or digital journalism.
  3. People get access to news through social media like Twitter, Instagram, Facebook, YouTube and from web news portals, web channels. This information is available in English and many other languages.
  4. Journalists working in this area today have to have many more skills than in the past when writing was the only requirement. Information available on these mediums should be reviewed critically and used with utmost care.

(b) E-newspapers
Answer:

  1. In recent times, e-newspapers have got prominent place in mass media.
  2. E-newspaper is not exactly like the printed one. In e-newspapers, news comes in sequence and not based on the nature and the importance of the news, like in printed newspaper e.g.. Front page news. Headline or Last page news.
  3. The news which we want to read has to be clicked and then it appears on the screen in detail.
  4. There is space provided for opinion of readers. In 1992, the first edition of the e-newspaper was published by ‘Chicago Tribune1.
  5. At present, almost all newspapers are available as e-newspapers and people can read them anytime, anywhere using the Internet or computer, tab, laptop or mobile.
  6. In recent times many newspapers have introduced e-newspapers. The e-newspapers are being received well by the readers.
  7. Learn to read e-newspapers with the help of your teachers.

Question 10.
Write short notes:
(a) Bengal Gazette:
Answer:

  • Bengal Gazette is the first newspaper which was started in India.
  • It was started by James Augustus Hickey, an Irish national.
  • It was first published on 29th January, .1780. It was also called “Calcutta General Advertiser’.
  • Bengal Gazette laid the foundation of newspaper in India.

(b) News printed in ‘Darpan’:
Answer:
The ‘Darpan newspaper started by Balshastri Jambhekar printed all types of news like political, economic, social and cultural. Some of them are mentioned below:

  • The Accounts of Expenditure from the Three Administrative Divisions of the East India Company.
  • The Danger of Russian Attack on the Nation.
  • Appointment of a Committee for Cleanliness of the City.
  • Remarriage of Hindu Widows.
  • The Inception of Theatre at Calcutta.
  • Achievements of Raja Ram Mohan Roy in England. All these reports published in the paper throw light on various situations/events of those days.

(c) Television:
Answer:

  • The first President of India, Dr. Rajendra Prasad inaugurated Delhi Doordarshan Centre.
  • Mumbai Doordarshan started to telecast its programmes on 2nd October, 1972.
  • Colour television started on 15th August, 1982. The Indian government granted permission to private, national and international channels in 1991 to telecast in India.

Question 11.
Explain the following sentences with reason:
(a) Newspaper is an important medium of education and information.
Answer:

  • Newspapers report events which are interesting to the public. But the importance of newspaper stretches far beyond a passing humari interest in events.
  • It covers a miscellany of topical issues. News would involve matters of higher importance like war, global warming, education, national elections or trivial issues such as scandals, gossips and debates on minor controversies.
  • Newspapers have contributed significantly to the spread of literacy and the concept of human rights and democratic freedoms.
  • They are integral to the development of democracy. In fact, they can help in making the democracy stronger.
  • Newspapers not only report the events but continue to shape opinions in the global village.

(b) 6th January is observed as ‘Patrakar Din’ or ‘Journalist Day’ in Maharashtra.
Answer:

  • Balshastri Jambhekar started the first newspaper in Marathi on 6th January, 1832 in Mumbai.
  • He is referred to as the ‘First Editor’ as he was the first editor.
  • He laid the foundation of Marathi newspaper by starting Darpan. As 6th January is his birth date, it is observed as ‘Patrkar Din’ or ‘Journalists’ Day’ in Maharashtra.

(c) Television and history are closely related.
Answer:

  1. Television plays a major role in developing interest in history. While producing shows and serials based on history and mythology, it is essential to have an accurate knowledge of history and know the minute details.
  2. ‘Bharat Ek Khoj’, Raja Shivchhatrapati, Ramayana, Mahabharata are among the few popular serials based on history and mythology. While producing these serials.
  3. It was essential to know the prevalent social conditions, outfits, lifestyle, weaponry, lingual expressions of the people. Historians who had knowledge on these subjects are required.
  4. While making programmes, based on sportsmen, literature, war, historical events, forts and animal life, it is important to give history of their development in that particular period.
  5. While conducting discussions on television on topics like social problems, education, economics, health, it is important to give references from the past.

This shows that the knowledge of history is required in the making many of programmes on Television. Hence Television and history are closely related.

Question 12.
Answer the following question in 25-30 words:
(a) Explain the objectives of newspapers.
Answer:
The main objectives of newspapers are as follows:

  • Newspapers provide various local, national and international news to the people and inform them about daily events.
  • They narrate political, economic, cultural and social history of the country.
  • Newspapers fulfill their role as the fourth column of democracy by creating public awareness and becoming a medium of mass education.
  • They even condemn the anti-social elements in the society and support the weaker section.

(b) How is history helpful in the planning of the Akashvani programmes ?
Answer:
Akashvani broadcasts all types of programmes from celebration of independence day to entertainment programmes. In planning these programmes, the knowledge of history is essential.

  1. Akashvani invites historians as experts for discussions while presenting programmes on various occasions such as the anniversaries of births and deaths of national leaders, anniversaries of historical events; speeches of all Prime Ministers/Presidents.
  2. Programmes like ‘On This Day in History’ is a daily programme which highlights importance of that day and date in history.
  3. Information has to be verified by historians before it reaches the people. Lectures on the contributions of various national leaders need to be supported by historical information. In the following ways history is helpful in the planning of Akashvani programmes.

(c) How were the message conveyed to the people in olden days?
Answer:
The following were a few means used to convey messages to the people in olden days:

  • A town crier would run on the streets beating drums and crying out important news according to the orders of the king.
  • So, the news would spread among people by word of mouth.
  • Inscriptions with royal decrees were placed at public places.

Question 13.
Read the following passages and answer the questions:”
(a) Which programmes are broadcasted by Akashvani?
Answer:

  • Initially, Akashvani broadcasted government programmes and schemes.
  • Later it broadcasted various entertainment and literary programmes.
  • Akashvani presents various programmes for creating awareness.
  • Special programmes are also broadcasted for farmers, workers, youth and women.

(a) On which book is the serial ‘Bharat Ek Khoj’ based on?
Answer:
The Serial Bharat Ek Khoj is based on ‘Discovery of India’, a book written by Pandit Jawaharlal Nehru.

(b) Who directed the serial ‘Bharat Ek Khoj’?
Answer:
The serial was directed by Shyam Benegal.

(c) Which factors/aspects of Indian history are depicted in ‘Bharat Ek Khoj’? OR Why was ‘Bharat Ek Khoj’ a serial telecasted by Doordarshan admired in all parts of India?
Answer:
The television serial ‘Bharat Ek Khoj’ presented social, political and economic life from ancient to the modem period in India.

  1. It portrayed various aspects of Indian history like Harappan civilisation, Vedic history and the interpretation of epics like Mahabharata and Ramayana.
  2. It used the technique of dramatisation effectively to recreate the Mauryan period and show the impact of Turk-Afghan invasions.
  3. The Mughal period and their contributions which have long-lasting effect on social and cultural fabric of India is shown. The rise of Bhakti movement, role of Chhatrapati Shivaji Maharaj in getting swarajya is portrayed.
  4. The last episodes (finale) of the serial narrate social movements and India’s freedom struggle in modem period.

Thus, the serial effectively portrayed the journey of India from Harappan civilisation to the modern period and therefore was admired in all parts of India.

Question 14.
Answer the following questions in detail:
(a) What were the different means of communication known around the world before the advent of newspaper?
Answer:
The following means of communication were used to convey news before the advent of newspaper:

  1. Inscriptions with royal decrees placed at public places was a custom in Egypt. Emperor Ashoka followed the sam method to reach out to his subjects.
  2. In the Roman Empire, roytil decrees were written on papers and those were distribute’d in all regions. It also contained information of various events taking place in the nation and its capital.
  3. During, the reign of’ Julius Caesar ‘Acta Diurna’, meaning acts of everyday used to be placed at public places in Rome.
  4. In the 7th century C.E., in China, royal dictates were distributed among people at public places.
  5. In England handouts were distributed occasionally among people at public places giving information about war or any important events.
  6. Travellers arriving from different faraway places would add spice to stories from those places and narrate the same to local people. The ambassadors of a king posted at various places would send back important news to the royal court.

(b) Write information on Periodicals based on its types.
Answer:
Magazines and journals which are published at regular intervals are known as Periodicals.
Types:

  • They are categorised as weekly, biweekly, monthly, bimonthly, quarterly, six monthly and annual.
  • There are some chronicles which are published at no fixed time.

Classification: Periodicals can be classified as popular and scholarly.

  • If a periodical aims at specialists and researchers, it is a ‘journal1. Articles are generally written by experts in the subject.
  • Popular periodicals are magazines published with variety of content. They can be on fashion, sports, entertainment and films.
  • Bharatiya Itihas ani Sanskruti and Marathwada Itihas Parishad Patrika are periodicals of present times. Periodicals are an important source to study history.

(c) Write about the important role of newspaper in the freedom struggle.
Answer:

  1. The press was the chief instrument for carrying out the political tasks and propagation of nationalist ideology.
  2. Both English and Vernacular press started by prominent “leaders like Gopal Ganesh Agarkar and Lokmanya Tilak acted as catalyst to the freedom struggle. They started ‘Kesari’ and ‘Maratha’ in 1881.
  3. Newspapers played a great role in building up an increasingly strong national sentiment and consciousness among people. It was an instrument to arouse, train, mobilise and consolidate nationalist public opinion.
  4. The newspapers were an effective tool in the hands of social reformers. They exposed social evils such as child marriage, ban on remarriage of the widows, inhuman institution as untouchability, caste fetters, etc. It became a weapon in their hands to educate masses.
  5. A comparative study was presented in newspaper on western education, knowledge and national education.
  6. Newspapers also discussed political institutions in India and the west. The main aim of these newspapers was not to gain profit but to serve the people.

(d) Give a short account of the development of Indian television.
Answer:

  1. Television service started in India in 1959. Dr. Rajendra Prasad, the first Indian President, inaugurated the Delhi Doordarshan centre.
  2. Mumbai centre began to telecast its programmes on 2nd October 1972. Colour television was introduced in India on 15th August 1982.
  3. The national telecast began in 1983. Doordarshan started Channels like DD Sports, DD Metro, news, etc. along with 10 regional channels.
  4. In the year 1991, the Indian government gave permission to private, national and international channels to telecast in India.
  5. Presently there are more than 800 national and regional channels. Some of them are exclusive news, sports, music, movies and religious channels which telecast programmes 24 hours a day.

(e) Distinguish between Newspapers and Magazines.
Answer:
Newspapers and magazines differ in their format, objectives and duration of getting published. The differences are noted below:

NewspapersMagazines
1. Newspapers document the current events.1. Magazines give no importance to current news.
2. News, articles, columns, editorials have importance in a newspaper.2. Magazines give preferences to particular subject and publish articles on it.
3. Newspapers are also called ‘Dailies’ as they are published every day.3. Duration of publication of magazine varies. Some are published weekly, fortnightly, monthly and annually.
4.. The main purpose of newspaper is to report local, national and international news.4. Instead of providing news, their content is entertaining and knowledge-based.
5. Newspapers make the people aware of the events happening in the society. They do not stick to any one subject.5. Magazines are about a specific topic. On the basis of their appearance, size, readability, content and audience, magazines differ from newspapers.
6. Newspapers mostly write about current news. Whatever happens in the world appears in the newspaper within a span of 24 hours. It shapes public opinion and keep people updated about the activities of the government.6, As magazines have lot of detailed information on specific topics they are considered as historical source.

Brain Teaser

Across:

  • Referred to as the ‘First Editor’.
  • A newspaper representing masses of the Indian society (Bahujan Samaj).
  • Tryambak Shankar Shejwalkar edited this journal.
  • Letters by Lokhitvadi.

Down:

  • The history of French Revolution was published in this newspaper.
  • Newspaper started by James Augustus Hickey.
  • First monthly magzine in Marathi.
  • Pandit Narendra Sharma suggested this name for AIR.Maharashtra Board Class 10 History Solutions Chapter 5 Mass Media and History 10

Class 10 History Textbook Solutions Answers

Historiography Development In The West Question Answer Class 10 History Chapter 1 Maharashtra Board

Std 10 History Chapter 1 Question Answer Historiography Development In The West Maharashtra Board

Balbharti Maharashtra State Board Class 10 History Solutions Chapter 1 Historiography Development in the West Notes, Textbook Exercise Important Questions and Answers.

Class 10 History Chapter 1 Historiography Development In The West Question Answer Maharashtra Board

History Class 10 Chapter 1 Question Answer Maharashtra Board

Question 1.
(A) Choose the correct option from the given options and complete the statement.
(1) It may be said that …….. was the founder of modern historiography.
(a) Voltaire
(b) Rene Descartes
(c) Leopold Ranke
(d) Karl Marx
Answer:
(a) Voltaire

Maharashtra Board Solutions

(2) ………… wrote the book entitled ‘Archaeology of Knowledge’.
(a) Karl Marx
(b) Michel Foucault
(c) Lucien Febvre
(d) Voltaire
Answer:
(b) Michel Foucault

(B) Identify and write the wrong pair in the following set.
(1) Georg Wilhelm Friedrich Hegel – ‘Reason in History’
(2) Leopold von Ranké – ‘The theory and Practice of History’
(3) Herodotus – ‘The Histories’
(4) Karl Marx – ‘Discourse on the Method’
Answer:
(1) Right pair: Georg Wilhelm Friedrich Hegel – ‘Reason in History’
(2) Right pair: Leopold von Ranké – ‘The theory and Practice of History’
(3) Right pair: Herodotus – ‘The Histories’
(4) Wrong pair: Karl Marx – Discourse on the Method.

Question 2.
Explain the following concepts.
(1) Dialectics
Answer:

  • In order to understand the true nature of an event, one needs to know its opposite for e.g. True — False, Good — Bad, etc.
  • A German philosopher, Georg Wilhelm Friedrich Hegel had put forward this method of analysis of history.
  • A theory called ‘Thesis’ is proposed at the beginning. It is followed by another theory called Antithesis’ which is, contrary to ‘Thesis’.
  • After a thorough logical discussion of both new thesis is proposed having gist of both (Thesis and Antithesis).
  • This process of orriving at a new thesis is called Synthesis.
  • This method of analysis of history which is based on opposites is known as ‘Dialectics’.

(2) Annales School
Answer:

  • At the dawn of the twentieth century, the writing ¿f history got a new direction.
  • Along with political events, kings, great leaders, the study of climate, local people, agriculture, trade, technology, means of communication, social divisions and their collective psychology of a group was also considered important in the study of history.
  • This new school of thought is known as Annales School. Annales School was started by French historians.

Question 3.
Explain the following with its reason.
(1) Historical research was driven to focus in depth on various aspects of women’s life.
Answer:

  • Initially, there was a lot of dominance of male perspective on historical writing. Simone de Beauvoir, a French scholar, insisted on inclusion of women perspective in historiography.
  • She emphasised on the inclusion of women in the process of writing history.
  • She insisted on rethinking of the male dominated perspective of history.
  • Because of her efforts historical research was driven to focus in depth on various aspects of women’s lives their employment, their role in trade unions, institution working for their cause, and their family life.

Maharashtra Board Solutions

(2) Foucault called his method, ‘the archaeology of knowledge’.
Answer:

  • According to Michel Foucault, the prevailing method of arranging historical events in a chronological order was not right.
  • He threw light on the fact that archaeology does not strive to reach the ultimate historical truth.
  • It attempts to explain various transitions in the past.
  • Foucault gave more importance for explaining the transitions in history. Hence, his method is called ‘the archaeology of knowledge’.

Question 4.
Complete the concept chart.
Maharashtra Board Class 10 History Solutions Chapter 1 Working of the Constitution 12
Answer:
Maharashtra Board Class 10 History Solutions Chapter 1 Working of the Constitution 7

Question 5.
Answer the following in detail.
(1) Explain Karl Marx’s ‘Class Theory’.

Answer:
In the latter part of nineteenth century, German thinker, Karl Marx put forward ‘Class Theory’ in his book ‘Das Kapital’.

According to him:

  1. History i not about abstract ideas but living people. The fullillment of basic needs of people depends on the nature of prevalent means of production and the ownership.
  2. All the different strata of the society do not get equal access to these means of production which causes the division of the society into classes. It rešults into class struggle.
  3. The class which owns means of production $ economically exploits the rest of the classes. Human history, according to him, is the history of class struggle.

(2) What are the four characteristics of modern historiography?
Answer:
The following are the four characteristics of modern historiography:

  1. Its method is based on scientific principles and begins with formation of relevant questions.
  2. These questions are anthropocentric i.e. they are about ancient human societies and their deeds in that period of time. No interrelation between the divine and human needs is suggested.
  3. Answers to these questions are supported by reliable evidence and they are presented in a logical order.
  4. History presents a graph of man’s progress with the help of his deeds in the past.

(3) What is feminist historiography?
Answer:

  • Feminist historiography means writing history with women perspective. There was a lot of dominance of male perspective on historical writing.
  • Simone de Beauvoir, a French scholar, insisted on rethinking on the male dominated perspective and including the women’s perspective in historiography.
  • The idea of feminist historiography was accepted.
  • Because of her efforts various aspects of women’s lives like their employment, their role in trade unions and their family life became part of historiography.

(4) Explain Leopold von Ranké’s perspective of history?
Answer:
Leopold’s view on ways to write history throws light on his perspective of history:

  1. He spoke about the critical method of historical research. He gave importance to information gathered through original documents.
  2. He also stated that all types of original documents related to the historical event should be examined in detail and with great care.
  3. He believed that with this method it was possible to reach the historical truth. He was critical of imagination in narration of history.

Maharashtra Board Solutions

Historiography : Development In The West Questions And Answers Pdf Project
Obtain detailed information on your favourite subject and write its history. For example :
– History of Pen
– History of Printing technology
– History of Computers
Answer:

Memory Map
Maharashtra Board Class 10 History Solutions Chapter 1 Working of the Constitution 4
Maharashtra Board Class 10 History Solutions Chapter 1 Working of the Constitution 5

Question 6.
Choose the correct option from the given options and complete the sentences:

(a) A scholar who writes critical historical narratives is known as ………………………… .
(a) an archaeologist
(b) a historian
(c) a social scientist
(d) a language expert
Answer:
(b) a historian

(b) The earliest inscription in the world is displayed at Louvre museum in ………………………… .
(a) England
(b) France
(c) Germany
(d) Portugal
Answer:
(b) France

(c) The tradition of recording historical events can be traced back to ………………………… civilization in Mesopotamia.
(a) Sumer
(b) Egyptian
(c) Arab
(d) Mohenjodaro
Answer:
(a) Sumer

(d) The tradition of modern historiography has its roots in the writings of ………………….. historiAnswer:
(a) Roman
(b) Greek
(c) German
(d) French
Answer:
(b) Greek

Maharashtra Board Solutions

(e) ………………….., a Greek historian of the fifth century B.C.E., had used the term ‘History’ for the first time for his book entitled, ‘The Histories’.
(a) Leopold Ranke
(b) Georg Hegel
(c) Michel Foucault
(d) Herodotus
Answer:
(d) Herodotus

(f) In 1737 C.E., the ………………….. university in Germany had an independent department for history.
(a) Oxford
(b) Cambridge
(c) Gottingen
(d) Stanford
Answer:
(c) Gottingen

(g) Historiography of the nineteenth century was greatly influenced by the thoughts of …………………..
(a) Karl Marx
(b) Voltaire
(c) Georg Hegel
(d) Leopold von Ranke
Answer:
(d) Leopold von Ranke

(h) A new school of historiography arose in France known as ………………….. school.
(a) Translation
(b) Annales
(c) Nationalism
(d) Communist
Answer:
(b) Annales

(i) The method of analysis which is based on opposites is known as …………………. .
(a) Numismatics
(b) Arithmetic
(c) Polynomial
(d) Dialectics
Answer:
(d) Dialectics

(j) ………………….. considered subjects like psychological disorders, science of medicine, prison administration for historical analysis.
(a) Michel Foucault
(b) Leopold Ranke
(c) Karl Marx
(d) Voltaire
Answer:
(a) Michel Foucault

(k) After 1990, ………………….. were considered as an independent social class.
(a) labourers
(b) women
(c) men
(d) farmers
Answer:
(b) women

Maharashtra Board Solutions

(l) According to ………………….., historical realities should be presented in a logical manner.
(a) Georg Hegel
(b) Voltaire
(c) Simone de Beauvoir
(d) Herodotus
Answer:
(a) Georg Hegel

(m) According to ………………….., one should never accept anything as the truth till all the doubts are solved.
(a) Rene Descartes
(b) Karl Marx
(c) Voltaire
(d) Herodotus
Answer:
(a) Rene Descartes.

Question 7.
Identify the wrong pair in the following and write it:
(1)

ThinkerBook
(1) Georg Wilhelm Friedrich Hegel(a) Reason in History
(2) Leopold von Ranke(b) The Theory and Practice of History
(3) Herodotus(c) The Histories
(4) Karl Marx(d) Discourse on the Method

Answer:
Wrong pair: Karl Marx – Discourse on the Method.

(2)

HistorianCountry
(1) HerodotusGreece
(2) Simone de BeauvoirGermany
(3) Michel FoucaultFrance
(4) Rene DescartesFrance

Answer:
Wrong pair: Simone de Beauvoir Germany.

(3)

Thoughts/OpinionHistorian
(1) All aspects of human life is important in the historiographyVoltaire
(2) He criticized imaginative narration.Leopold von Ranke
(3) History is not about abstract ideas but about living people.Rene Descartes
(4) Emphasized the rethinking of the male-dominated perspective of history.Simone de Beauvoir

Answer:
Wrong pair: History is not about abstract ideas but about living people – René Descartes.

Maharashtra Board Solutions

Question 8.
Complete the concept chart

Maharashtra Board Class 10 History Solutions Chapter 1 Working of the Constitution 8
Answer:
Maharashtra Board Class 10 History Solutions Chapter 1 Working of the Constitution 9

Maharashtra Board Class 10 History Solutions Chapter 1 Working of the Constitution 10
Answer:
Maharashtra Board Class 10 History Solutions Chapter 1 Working of the Constitution 11

Question 9.
Prepare a flow chart on the given topic:
Stages of historiography
Answer:
Maharashtra Board Class 10 History Solutions Chapter 1 Working of the Constitution 12

Question 10.
Write short notes:

(1) Georg Wilhelm Friedrich Hegel:
Answer:

  • Georg Hegel was a German philosopher.
  • He was of the view that the historical realities should be presented in a logical manner. According to him, Timelme was indicative of progress.
  • He believed that presentation of history is bound to change as time passes because new evidence surfaces.
  • His philosophy convinced many scholars that historical methods were not of lesser quality, though they differed from the scientific method.
  • His lectures and articles are published in a book called ‘Encyclopaedia of Philosophical Sciences’.
  • His book ‘Reason in History’ is well known. He devised a method of analysis based on opposites known as Dialectics’.

Maharashtra Board Solutions

(2) Karl Marx:
Answer:

  1. Karl Marx was a German thinker in the nineteenth century. He wrote the world famous treatise Das Kapital’. According to him, history was not about abstract ideas but about living people.
  2. He believed that human relationships are shaped by the fundamental needs of people and the ownership of prevalent ineczns of production to meet those needs.
  3. He stated that unequal accessibility to the means of production creates à division in socièty leading to class struggle. His theory of class struggle is considered significant all over the world.
  4. According to Marx, human history is the history of class struggle because the class which owns the means of production economically exploits the rest of the classes.

(3) Michel Foucault:
Answer:

  • Michel Foucault was a twentieth century historian from France.
  • He wrote the book ‘Archaeology of Knowledge’.
  • In this book, he insisted that the prevailing practice of arranging historical events in a chronological order is not right.
  • He gave importance to explaining the transitions that took place in history.
  • He acknowledged the role of subjects such as science of medicine, psychological disorders, prison.
  • Administration in historical analysis. This was not acknowledged by earlier historiAnswer:

(4) Leopold von Ranke:
Answer:

  1. Leopold von Ranke, a German philosopher, laid emphasis on utmost importance of information gathered through original documents.
  2. In order to reach historical truth, it was necessary to examine all documents related to historical event. He critcised the imaginative narration of history.
  3. Collection of his articles are published in two books, entitled ‘The Theory and Practice of History’ and ‘The Secret of World History’.
  4. Ranke had great influence on historiography of nineteenth century.

Question 11.
Give reasons:
(a) In historical research, it may not be possible to use the method of experiments and observation.
Answer:

  1. In physical and natural sciences, experiment and observation method is used to establish laws that remain true irrespective of the time and space.
  2. These laws can be tested and proved again and again.
  3. In historical research, the events had already taken place in the past and we were not present in the historical time and space.
  4. Moreover, these events cannot be recreated in the present time and space. Hence, experiment and observation method may not be used in historical research.

(b) Historiography in the 18th century gave importance to objectivity in history.
Answer:

  • A remarkable progress was achieved in the fields of Philosophy and Science till the eighteenth century in Europe.
  • It was believed that by applying scientific methods it was possible to study social and historical truths.
  • In the later period, history and historiography witnessed a lot of philosophical discussion.
  • This eliminated the imaginative and divine context in history and gave importance to objectivity.

Maharashtra Board Solutions

Question 12.
Answer the following in 25-30 words:
(a) What is Historiography?
Answer:

  1. The writing of critical historical narrative is called Historiography. A person who writes it is known as ‘Historian’. The following steps are helpful in writing historical narrative:
  2. Information related to history is collected and analyzed.
  3. The various sources are critically examined to understand the references regarding time and space in the given information as well as the conceptual framework used.
  4. After examining the references of historical information, relevant questions related to these historical references are framed and hypotheseis are formulated.
  5. In short, writing of critical historical narrative by following this method is known as historiography.

(b) What did Rene Descartes insist upon?
Answer:
French Philosopher Rene Descartes insisted on the following in writing historiography:

  1. ‘Never to accept anything as true till all grounds of doubt are excluded’.
  2. Hence, the reliability of a source like historical documents should be verified by critically examining them while writing history.

(c) Why is Voltaire said to be the founder of modern historiography?
Answer:
Voltaire, a french scholar, opined that it was important to consider the following aspects while writing history:

  1. objective truth and chronology of events;
  2. prevalent social traditions, agriculture, trade and economic system. It was because of his view that all aspects of human life was considered for history writing. Therefore, he is said to be the founder of modern historiography.

(d) What are the objectives of writing history?
Answer:
History is researched and written down with following objectives:

  • To analyse the events in the past.
  • To verify information about the historical events and their interconnections.
  • To study in detail and remove imaginative element and bring forth the truth.
  • To put the past events in chronological order.

(e) What progress was achieved in historiography in the eighteenth century?
Answer:
The following progress was achieved in historiography in the eighteenth century:

  • Scientific methods were applied to study social and historical truths.
  • Philosophical discourses revolving around divine phenomena were given less importance.
  • Philosophical discussions focused more on the objectivity in history and historiography.
  • Since the universities got an independent department of history, they became centres of historical studies.

Question 13.
Head the given passage carefully and answer the questions given below:
(a) Who is called a Historian?
Answer:
A scholar who writes critical historical narratives is called a Historian.

(b) Complete the concept chart.
Factors which determined historian’s
Maharashtra Board Class 10 History Solutions Chapter 1 Working of the Constitution 1
Answer:
Factors which determined historian’s
Maharashtra Board Class 10 History Solutions Chapter 1 Working of the Constitution 2

(c) How did the people in ancient societies preserve the events in the past?
Answer:
The ancient people preserved the events in the past so that they can pass them to the next generation. They used various means to do this:

  • Narrating the stories of valour of ancestors to the next generation.
  • Stories of their life preserved through cave paintings.
  • Adopting story telling technique.
  • Singing songs and ballads to impress events upon the minds of the new generation.

Maharashtra Board Solutions

Question 14.
Answer the following questions in detail:
(a) Which experts do we need in order to prove the reliability of historical documents?
Answer:
The following experts are required to prove the reliability of historical documents:

  • Language expert who can decipher the language and meaning of the document or the script on the inscription.
  • One who can recognise the type of paper used and the period in which it was used.
  • One who can understand the lettering style and the writing style of the author.
  • Expert who has knowledge of different seals, i.e. stamps of authority used by the rulers.
  • Historian who can interpret and do a comparative study of the references given in the document.

(b) Write Hegel’s view on history.
Answer:

  • Georg Wilhelm Friedrich Hegel was a German philosopher.
  • He was of the view that the historical realities should be presented in a logical manner.
  • He believed that presentation of history is bound to change as time passes because new evidence surfaces.
  • He proposed a method of analysis based on opposites known as ‘Dialectics’.
  • Hegel’s philosophy convinced many scholars that historical methods were not of lesser quality, though they differed from scientific methods.
  • His lectures and articles are published in a book called ‘Encyclopaedia of Philosophical Sciences’. His book ‘Reason in History’ is well known.

Question 15.
Observe the inscription in the picture and write information it:
Maharashtra Board Class 10 History Solutions Chapter 1 Working of the Constitution 13
Answer:

  1. A fragment of the earliest inscription is shown in the above picture. It dates back to 4500 BCE.
  2. It is displayed at the Louvre museum in France.
  3. The inscriptions have names of Sumerian kings and stories of battles fought by them.
  4. It shows a forward marching file of soldiers holding shields and spears. The General is in the front.
    Brain Teaser
    Hints:
    Down:

    • He used the word ‘History’ for the first time
    • He wrote the book ‘Discourse on the Method’
    • Presented Theory of ‘Dialectics’
    • He called his method ‘Archaeology of Knowledge’

Maharashtra Board Solutions

Across:

  • founder of modern historiography
  • Criticised imaginative narration of history. Articles published in ‘The Secret of World History’
  • Her writings helped in establishing the fundamentals of feminism
  • He wrote ‘Das Kapital’
    Maharashtra Board Class 10 History Solutions Chapter 1 Working of the Constitution 14

Class 10 History Textbook Solutions Answers

Political Parties Question Answer Class 10 Political Science Chapter 3 Maharashtra Board

Std 10 Political Science Chapter 3 Question Answer Political Parties Maharashtra Board

Balbharti Maharashtra State Board Class 10 Political Science Solutions Chapter 3 Political Parties Notes, Textbook Exercise Important Questions and Answers.

Class 10 Political Science Chapter 3 Political Parties Question Answer Maharashtra Board

Political Science Class 10 Chapter 3 Question Answer Maharashtra Board

Question 1.
Choose the correct option from the given options and complete the sentences.
(1) When people come together and participate in electoral process, to acquire political power, such organisations are called ………………………….. .
(a) Government
(b) Society
(c) Political parties
(d) Social organisations
Answer:
(c) Political parties

Maharashtra Board Solutions

(2) National Conference is a party in ………………………….. this region.
(a) Odisha
(b) Assam
(c) Bihar
(d) Jammu and Kashmir
Answer:
(d) Jammu and Kashmir

(3) Justice Party- a non-Brahmin movement was transformed into ………………………….. Political Party.
(a) Assam Gan Parishad
(b) Shivsena
(c) Dravid Munnetra Kazhagam
(d) Jammu and Kashmir National Conference
Answer:
(c) Dravid Munnetra Kazhagam

Question 2.
State whether the following statements are true or false. Give reasons for your answer.
(1) Political parties act as a link between government and people.
Answer:
The above statement is True.

  • The political parties convey the demands and complaints of the people to the government.
  • Information about various government policies and schemes are conveyed to the people by the political parties.
  • People’s reaction to the policies and their expectations are conveyed to the government too by the parties. In this way, political parties act as a link between government and the people.

(2) Political parties are social organisations.
Answer:
The above statement is True.

  • People who have similar views come together voluntarily and form a party, so it can be said that political parties are an integral part of our society.
  • The political parties try to solve the problems of the people.
  • Some political parties represent the role of a particular community in society, its ideology and work to achieve it. Hence it can be said that political parties are social organizations.

Maharashtra Board Solutions

(3) Coalition politics leads to instability.
Answer:
The above statement is False.

  • As no single party got majority after the elections held in 1989, coalition government came to power at the centre and many states.
  • Parties had to set aside their policies and programmes and concentrate on a common agenda to run the government.
  • Both Congress Party and the Bharatiya Janata Party made an experiment of establishing a coalition government.
  • The National Democratic Alliance formed by BJP and its partners and the Democratic Front government formed by Congress and its partners ruled at the centre and state level effectively.

Therefore, the belief that the coalition government brings instability was proved wrong.

(4) Shiromani Akali Dal is a national party.
Answer:
The above statement is False.
The Election Commission of India recognises a political party as National or Regional party on the basis of specific criteria namely:

  • The number of seats secured in Parliament and Legislative Assembly or percentage of votes secured.
  • Shiromani Akali Dal does not meet the criteria listed above.
  • As its influence is limited to the state of Punjab and not in any other state.
  • The Election Commission has given recognition to it as regional party.

Question 3.
Explain the following concepts.
(1) Regionalism
Answer:

  • India is a vast country with great physical diversity. People belonging to different regions have their own language, culture and traditions.
  • Along with the physical diversity, we find diversity in literature, education, history and movements.
  • Each one feels an affinity for his language, traditions and history of social reforms. This gives rise to linguistic identity.
  • This affinity towards all the above-mentioned aspects develops into identity consciousness and gives rise to excessive regional pride.
  • People start giving preference only to the development of their language and region.
  • This is known as Regionalism.

Maharashtra Board Solutions

(2) National Parties
Answer:
A party which functions at the national level is known as National Party.

  1. The Election Commission has laid certain criteria for a party to get recognised as a Political party. The political party should secure at least f 6% valid votes in four or more states in the earlier Lok Sabha. OR
  2. State Assembly elections and minimum four members should be elected in the Lok Sabha from any state or states in the earlier elections. OR
  3. The candidates of a party should be elected from a minimum three states or should be elected from a minimum 2% constituencies of the total Lok Sabha constituencies. OR
  4. It is important to get recognition as a state party in at least four states.

Question 4.
Answer the following questions in brief.
(1) What are the major characteristics of political parties?
Answer:
The main features of political parties are as follows:

  • Political parties aim at securing power by contesting elections.
  • Every political party has some ideology.
  • Every party has an agenda. It is based on the party’s ideology.
  • The party that gets majority seats in election forms the government and the one that does not secure the majority act as opposition parties.
  • Political parties are a link between the people and the government and work to gain the support of the people.

(2) What changes have taken place in the nature of political parties in India?
Answer:
The following changes were seen in the party system in India:

  • Indian- National Congress was the only dominant party in states and at the centre after independence.
  • All other parties came together and formed a coalition in 1977 and defeated the Congress.
  • For the first time in history, the two-party system got importance over one-party system.
  • The one-party system came to an end after the 1989 elections.
  • Regional parties got importance and the coalition government was formed at the centre and in the states.

Project
(1) In a map of Maharashtra, point out the Loksabha constituency that includes the names of your parents.
(2) In a map of India, point out the places where national political parties have their influence.
Answer:

Memory Map
Maharashtra Board Class 10 Political Science Solutions Chapter 3 Political Parties 1

Maharashtra Board Solutions

Question 5.
Choose the correct option from the given options and complete the sentences:
(a) The party which fails to secure majority is known as ………………………. party.
(a) Ruling
(b) Opposition
(c) Independent
(c) Coalition
Answer:
(b) Opposition

(b) ‘Bharatiya Janata Party’ which was formed in 1980 after a split with ………………………. a component of Janata Party.
(a) Jan Sangh
(b) Lok Dal
(c) Independent party
(b) Janata Dal
Answer:
(a) Jan Sangh.

(c) Social support received by a political party is called ………………………. .
(a) Democracy
(b) People’s rule
(c) Mass base
(d) Public relation
Answer:
(c) Mass base

(d) Promotion of the Marathi language is the objective of the ………………………. .
(a) Dravida Munnetra Kazhagam
(b) Shiromani Akali Dal
(c) Shiv Sena
(d) Assam Gana Parishad
Answer:
(c) Shiv Sena

(e) There are ………………………. recognised parties in India.
(a) five
(b) seven
(c) nine
(d) six
Answer:
(b) seven

(f) The main objective of the political party is to capture ………………………. and retain it.
(a) publicity
(b) victory
(c) power
(d) information
Answer:
(c) power

Maharashtra Board Solutions

(g) The ideology of the Communist Party of India is based on ………………………. Philosophy.
(a) Capitalist
(b) Marxist
(c) Democracy
(d) Imperialist
Answer:
(b) Marxist

(h) Shiromani Akali Dal is a prominent regional party in ………………………. state.
(a) Odisha
(b) Assam
(c) Punjab
(d) Jammu and Kashmir
Answer:
(c) Punjab

Question 6.
State whether the following statements are true or false. Give reasons for your answer:

(a) Political parties do not need support of the people.
Answer:
The above statement is False.

  • To secure power is the main aim of political parties.
  • Political parties have to implement various policies and programmes for the welfare of people and to gain the support of the people.
  • The party which solves the issues related to the welfare of the people get support.
  • Without the support of the people they can never get a mandate.

Hence, all political parties require support of the people.

(b) The Communist Party of India was split.
Answer:
The above statement is True.

  • The Communist Party of- India was established in 1925. The Communist Parties follow Marxist ideology.
  • In 1962, due to differences in the leadership a rift was created in the party.
  • The main reason for the split was about which political line to follow.

(c) Sometimes the sentiments of regionalism gets strengthened in the country.
Answer:
The above statement is True.

  1. A country like India has diversity of government language, region and culture. This diversity creates affinity towards a region.
  2. This affinity gives rise to excessive regional S pride and initiating movements to save it. The significance of such movements is claimed to be for preserving culture.
  3. Asserting to be rightful claimant of material resources, job opportunities and development of the region these movements strengthen the regional pride.
  4. Thus, this excessive regional pride turns morbid taking the form of regionalism.

Maharashtra Board Solutions

(d) Regional parties have no influence on National Politics.
Answer:
The above statement is False.

  • No single party got majority in the elections to Lok Sabha held in 1989.
  • The national parties formed coalition government at the centre taking help of regional parties.
  • As regional parties share power at the centre they have influence on national politics.

Question 7.
Explain the concept:
(a) Regional Parties:
Answer:

  1. The groups having a proud feeling about the different identity of their region and who compete to capture power to bring about regional development are ‘Regional Parties’.
  2. The influence of such parties are limited to their region. They give importance to regional problems. Development of one’s own region is the prime objective of these parties.
  3. Sometimes they demand for independent state or autonomy. They influence the national politics because of their dominance in the region.
  4. They have passed through various phases, from separatism to autonomy and have then merged with mainstream national politics.

(b) Political Party:
Answer:

  1. A Political Party is a kind of social organisation of like-minded people. The main aim of any political party is to contest election and secure power.
  2. The stand taken by various political parties on issues becomes their political ideology.
  3. In democracy, political parties are at the centre of all political activities. They are a link that connects common people, democracy, representation and elections.
  4. The party that secures a majority becomes the ruling party and the rest are known as the. opposition.

Question 8.
Write short note:
(a) Party System:
Answer:

  1. If one party remains in power in a country for a long period and no other party has any kind of influence the party system it is called ‘One- Party System’.
  2. When there are two equally strong parties which alternatively come to power. It is called ‘Two-Party System’.
  3. In a country where many political parties exist and compete with each other to capture power and have more or less influence in different states is called ‘Multi-Party System’.
  4. Democracy develops in Multi-Party System.

(b) Indian National Congress:
Answer:

  • The Indian National Congress was established in 1885.
  • The party represented the hopes and aspirations of Indians and led the freedom struggle.
  • Groups having diverse ideologies became part of the Congress to fight for freedom.
  • It believes in democratic socialism, social equality and international peace.
  • After independence, the Congress Party was a dominant party for almost four decades and ruled at the centre and in the states.

Maharashtra Board Solutions

(c) Communist Party of India:
Answer:

  • The Communist Party of India was established in 1925. The Communist Party follows the Marxist ideology.
  • The party aims at working to protect the interests of workers and labourers.
  • The main objective of this party is to oppose capitalism and protect the interests of workers.
  • The party split due to ideological differences in 1964. Those who walked out of the party formed Communist Party (Marxist).

(d) Nationalist Congress Party:
Answer:

  • Nationalist Congress Party (NCP) is the splinter or breakaway party from the Congress Party.
  • It considers the values like democracy, equality and secularism important.
  • It became part of United Progressive Alliance (UPA) and came to power in Maharashtra.
  • It was in power in Maharashtra from 1999 to 2014 and at the centre from 2004 to 2014.

(e) Trinamool Congress:
Answer:

  • All India Trinamool Congress was established in 1998.
  • The Election Commission of India gave it recognition in 2016.
  • Democracy, Secularism and protection of the weaker sections of the society are some of the policies of the party.
  • Presently (April 2019), this party is in power in the state of West Bengal.

(f) Shiv Sena:
Answer:

  1. The Shiv Sena was founded in 1966.
  2. The main objective of the party was to fight for the cause of Marathi-speaking people and preservation of Marathi language.
  3. They resisted the people from other regions.
  4. In 1995, it became the ruling party with BJP in Maharashtra and its strategic tie-up with BJP helped it to enter national politics.
  5. It was in power at the centre with BJP from 1998 to 2004. Again it has shared power with the BJP at the centre and state since 2014.

(g) Shiromani Akali Dal:
Answer:

  • Shiromani Akali Dal was formed in 1920.
  • It is a dominating party in Punjab.
  • It gives preference to nurture religious and for the regional pride.
  • The party has retained power in Punjab for many years.

(h) Dravid Munnetra Kazhagam:
Answer:

  • Justice party, a non-Brahmin movement, started in 1920. In 1944, it transformed into a political party called Dravid Kazhagam.
  • In 1949, a group within the party got split and formed Dravid Munnetra Kazhagam (DMK).
  • The party works for the protection of Tamil identity.
  • This party implemented many policies for welfare of the people and therefore has support from all the sections of society.
  • Another group separated from it in 1972 and formed All India Dravid Munnetra Kazhagham.
  • It remained in power for a long time in Tamil Nadu and for sometime at the centre.

Maharashtra Board Solutions

Question 9.
Do as directed
(a) Complete the concept map:
Maharashtra Board Class 10 Political Science Solutions Chapter 3 Political Parties 2
Answer:
Maharashtra Board Class 10 Political Science Solutions Chapter 3 Political Parties 3

Maharashtra Board Class 10 Political Science Solutions Chapter 3 Political Parties 4
Answer:
Maharashtra Board Class 10 Political Science Solutions Chapter 3 Political Parties 5

Maharashtra Board Solutions

(3)
Maharashtra Board Class 10 Political Science Solutions Chapter 3 Political Parties 6
Answer:
Maharashtra Board Class 10 Political Science Solutions Chapter 3 Political Parties 7

(b) Complete the Time-line writing the name of the party or the year of establishment:
Maharashtra Board Class 10 Political Science Solutions Chapter 3 Political Parties 8
Answer:
Maharashtra Board Class 10 Political Science Solutions Chapter 3 Political Parties 9

Question 10.
Answer the following questions in brief:

(a) What is called “mass base”?
Answer:

  • Every political party is formed with some ideology.
  • Political parties take a certain stand towards public issues.
  • Their ideology and their stand towards public issues are conveyed to the people through various programmes.
  • If the people agree with their role and ideology, they get the support of the people.
  • Such social support received by a political – party is called ‘mass base’.

(b) Write about the policies of Indian National Congress.
Answer:
The policies of the Indian National: Congress are as follows:

  • Equal rights for the minorities and weaker sections of society.
  • Secularism, all-round development and social welfare are its objectives.
  • Introduction of socialist democracy.
  • Belief in values like international peace and social equality.

Maharashtra Board Solutions

(c) Explain the role of Bharatiya Janata Party.
Answer:
Bharatiya Janata Party was formed in 1980 with the following objectives:

  • To preserve Indian culture and traditions.
  • To create a strong and rich India.
  • To give importance to economic reforms for development of India.

(d) Write about the policies of Communist Party of India (Marxist).
Answer:
Communist Party of India (Marxist) was formed in 1964 with the following objectives:

  • The party advocates socialism, secularism and democracy.
  • The main policy of the party is to work for the welfare of farmers, landless labourers and workers.
  • The party opposes imperialism.

(e) Why was Bahujan Samaj Party formed?
Answer:
The Bahujan Samaj Party was formed in 1984 to achieve the following objectives:

  • To bring socialist ideology into practice.
  • To secure power for ‘majority’ comprising of scheduled castes, scheduled tribes and other backward classes.
  • To give power in the hands of ‘majority’.

(f) What do the regional parties give preference for?
Answer:
The regional parties give preference to the following issues:

  • Importance should be given to regional issues and bring about development.
  • Regional issues should be handled* at regional level.
  • The power rests in the hands of regional people. ‘
  • People living in that region should get preference in administration and jobs. .

(g) What changes are seen in the nature and role of regional parties?
Answer:
The role of regional parties changed over period of time. The changes are as follows:

  • After independence, regional identity gave rise to separatists movements and demands were put up by regional parties for separate state.
  • They wanted to break away from the Indian union and form a separate state.
  • The demands of the regional parties changed gradually and these parties started asking for autonomy.
  • In the later period, for the development of their region and people the parties demanded representation of their people in the state and central government.
  • Regional parties in the north eastern region also started demanding more autonomy after split up.
  • The journey of the regional parties began with a split up and then a demand for autonomy going on to share power in federation and then entry into mainstream national politics.

Maharashtra Board Solutions

(h) What are the objectives of Assam Gana Parishad?
Answer:
Assam Gana Parishad was formed in 1985 with the following objectives:

  • To preserve the uniqueness of Assam’s culture, language and social identity.
  • To make efforts for economical development of Assam.
  • To resolve problems of displaced people.

(i) What are the criteria for a regional party to get recognition?
Answer:

  • In the last general .elections to the State Assembly, the party should not secure less than 6% of the total number of valid votes polled.
  • At least 2 members to be elected to the Legislative Assembly (Vidhan Sabha).
  • 3% seats of the total seats of Legislative Assembly or at least 3 seats in Legislative Assembly.

(j) What work is done by political parties?
Answer:
The following work is done by political parties:

  • To propagate policies and programmes of the party and contest elections.
  • They implement various policies when they come to power.
  • If they fail to secure power, they act as opposition party and try to gain support of the people.
  • They communicate the demands and complaints of the people to the government and the policies and programmes of the government to the people.

Question 11.
Give your opinion:

(a) Imagine you are opposition party leader and you have observed that the ruling party has not done good work in the field of health. What will you do as a leader of opposition?
Answer:
As opposition leader, I will do the following to make the government realise its negligence in the health field:

  • I will question the government in Parliament and point out their shortcomings and ask about the prolonged projects.
  • I will create awareness among the people by writing articles in newspapers.
  • I will give interviews,on radio and television and criticize the government.
  • I will organise rallies and meetings to sensitize among the people.

(b) Think and write
What has to be done to bring partyless democracy in modern times?
Answer:

  • The recognition of all the parties should be cancelled. ‘
  • People should be given the right to make decisions.
  • In order to improve the decision-making power, people should be educated on political issues.
  • To improve the moral character of the people who want to take the leadership.
  • To initiate direct democracy and prepare the people for the same.
  • Stress should be given for decentralization.
  • Mahatma Gandhi, Vinoba Bhave and Jayprakash Narayan put forth the idea of partyless democracy.
  • What has to be done to bring such democracy in modern times?

Maharashtra Board Solutions

Question 12.
What do you understand by the following news in newspapers? Explain in brief.

(a) Opposition parties held a meeting in Mumbai to resist the Ruling party. Will take up the issue of farmers?
Answer:

  • The ruling party did not undertake any work for the welfare of farmers. Therefore all the opposition parties decided to trap the government on this issue.
  • The opposition parties have kept aside their differences and come together for this cause.
  • It is the duty of the opposition party to question the negligence of the government.
  • This news makes us aware of the line of action taken by the opposition.
  • Opposition parties held a meeting in Mumbai to resist the Ruling party. Will take up the issue of farmers?
  • Ruling party organised ‘Samvad Yatra’ in rural areas.

(b) Ruling party has organised ‘Samvad Yatra’ in rural areas.
Answer:

  • Political parties adopt different ways to popularise their party and influence the people.
  • As the means of communication are limited in rural areas they organise the Yatra.
  • It shows the efforts of the government to understand problems of people in rural areas.
  • It is essential to have dialogue with people to know their problems and opinions.
  • As the initiative is taken by the government, people will develop faith in government.
  • The news conveys to us that the ruling party is carrying out its duties properly.
  • The faith in government becomes profound when people feel that government is sensitive towards them.

Class 10 Political Science Textbook Solutions Answers

Tourism, Transport and Communication Question Answer Class 10 Geography Chapter 9 Maharashtra Board

Std 10 Geography Chapter 9 Question Answer Tourism, Transport and Communication Maharashtra Board

Balbharti Maharashtra State Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication Notes, Textbook Exercise Important Questions and Answers.

Class 10 Geography Chapter 9 Tourism, Transport and Communication Question Answer Maharashtra Board

Geography Class 10 Chapter 9 Question Answer Maharashtra Board

1. State whether right or wrong with reasons.

Question a.
The future of tourism is bright in India due to its natural diversity.
Answer:
Right.

Question b.
Tourism is an invisible trade.
Answer:
Right.

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication

Question c.
The indicator of development in a country is the development of transport in that country.
Answer:
Right

Question d.
Brazil’s time is ahead of India’s time.
Answer:
Wrong

Question 5.
The development of tourism in India has begun recently.
Answer:
Right.

2. Answer in short:

Question a.
Which factors attract more tourists in Brazil?
Answer:
The factors which attract more tourists in Brazil are:

  • Clean, white sand beaches
  • Attractive seacoasts
  • Beautiful islands
  • Beautiful orchards
  • Deep dense forests of Amazon
  • Various birds and animals
  • Cities like the new capital city of Brasilia, Rio-de- Janeiro and Sao Paulo.
  • Eco-tourism

Question b.
What are the difficulties in the development of the railway system in Brazil’s internal areas?
Answer:

  • The densely forested lands of Amazon River Basin and the swampy lands have limited the development of railways in Brazil.
  • Large pockets of Brazil are unpopulated. Roadways are the most common mode of transportation in the Eastern part of Brazil and waterways have developed on a commercial basis in the Amazon River.
  • The trains are used for long distance transportation of passengers only in a few cities and by tourists. These are the difficulties in the development of the railway system in Brazil’s internal areas.

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication

Question 3.
A plane leaves Brasilia at 11 a.m. on 31st December. The plane crosses 0° Meridian and reaches Vladivostok via New Delhi. Tell the local time, date and day at New Delhi and Vladivostok when the plane leaves Brasilia.
Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 1
Answer:
Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 2
Time difference between Brasilia and GMT = 3 hours
Time at GMT = 11 a.m.+3 hours
= 2.00p.m.

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 3
Time difference between GMT and New Delhi = 5 hours 30 min.
Time at New Delhi = 2 a.m. + 5 hours 30 min.
= 7 hours 30 min.
= 31st December,
Sunday, 7.30 p.m.

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 4
Time difference between
New Delhi and Vladivostok = 4 hours 30 min.
Time at Vladivostok = 7.30 p.m. + 4 hours 30 min.
= 12.00 am

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 5
The local time, date and day at Delhi are 7 : 30p.m. , 31st December, Sunday
local time, date and day at Vladivostok are 12 am. , 1st January, Monday.

4. Match the following:

Column A’Column ’B’
(1)  Trans-Amazonian
(2) Road Transport
(3)  Rio de Janeiro
(4) Manmad
(a)       Tourist  Place Highway
(b)      Railway Station in India
(c)       Golden Quadrilateral
(d)      Major Highway
(e)       40° W Meridian

Answer:
1 – d
2 – c
3 – a
4 – b

5. Give geographical reasons:

Question a.
Eco-tourism is being developed more in Brazil.
Answer:

  • Eco-tourism means responsible travel to natural areas without causing damage to the environment.
  • Brazil has the largest number of vegetation species in the world including Amazon, the largest rainforest of the world and a great diversity of wild life.
  • It has clean white sand beaches, attractive seacoasts, beautiful islands and orchards. Looking at the sensitivity of the natural resources in Brazil, ecotourism is being developed here.

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication

Question b.
The internal waterways are not developed in Brazil.
Answer:

  • Most of the rivers in Brazil flow with high speed.
  • The amount of discharge of many rivers is very huge.
  • In Brazil, rigid topography is found at many places near river basins. Many of the areas near rivers are inaccessible.
  • Therefore, internal waterways are not developed in Brazil.

Question c.
A dense network of railways has developed in the North Indian Plains.
Answer:

  • The North Indian Plains are flat plain lands with a dense population.
  • Due to agricultural development, many agro- based industries have developed here.
  • Thus there is a high demand for transportation especially railways for movement of freight and passenger transport.

Question d.
Development of transport is important for the country’s progress.
Answer:

  • Transport modes help is the movement of humans, animals and goods from one location to another.
  • Transport enables social, economic and cultural development of the country.
  • Road transport facilitates door-to-door service.
  • Rail transport is suitable for long distance and bulky goods.
  • Water transport plays an important role in international trade and suitable for bulky goods.
  • Air transport provides the fastest means of transportation.

Question e.
We rely on the sea routes for international trade.
Answer:

  • Waterways is the cheapest modes of transportation for bulky and perishable goods over long distances.
  • International trade includes import and export of goods.
  • India is surrounded by Bay of Bengal, Arabian Sea and India Ocean, therefore we have a long coastline.
  • So we rely on the sea routes for international trade.

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication

6. Differentiate between:

Question a.
Water transport in the Amazon and the Ganga river.
Answer:

Water transport in the Amazon RiverWater Transport in the Ganga River
(i) River Amazon is navigable throughout its course due to its gentle slope.
(ii) Boats ply from Equitos in Peru to its mouth i.e., approximately 3700 km.
(iii) River Amazon is used for navigation between Brazil and neighbouring countries.
(i) River Ganga is navigable only in its middle and lower course which is gentler as compared to its upper course.
(ii) Boats ply from Allahabad to Haldia. i.e. approximately 1620 km.
(iii) River Ganga is used for inland transportation.

Question b.
Communication in Brazil and India
Answer:

Communication in BrazilCommunication in India
(i) Telecommunication services in Brazil are well developed and efficient.
(ii) Brazil is developing technology to send domestically-made satellites into space with its own rockets.
(i) With the explosion of electronic media, telecommunication industry has become one of the fast growing sectors.
(ii) With development of our own satellites, India has come a long way in this field.

Question c.
IST and BRT
Answer:

ISTBRT
(i) 1ST is the Indian Standard Time.(i) BRT is the Brasilia Time/Brazil Time. (Standard Time)
(ii) India has only one standard time zone.(ii) Brazil has four time zones.
(iii) The official 1ST is based on 82.5° E longitude(iii) The official BRT is GMT – 03 which passes
which passes through Allahabad, Uttar Pradesh.through Brasilia.
(iv) 1ST is 5hrs 30mins ahead of Greenwich Meridian(iv) BRT is 2,3,4, or 5 hrs behind Greenwich Meridian
(v) Time as India is in the eastern hemisphere.(v) Time as Brazil is in the western hemisphere.

7. Write short notes on:

Question a.
Modem means of communication:
Answer:
(i) Modern means of communication includes landlines as well as mobile services, television broadcasting and computer/internet access.
(ii) In this era of information and communication technology, digitally enhanced communication devices like mobile phones, smart phones, internet and satellites are being used.

Question b.
Air transport in India:
Answer:
(i) Air transport is more developed in India as compared to Brazil.
(ii) The use of international and internal airways is increasing.
(iii) Important airports from where domestic and foreign travel take place are Mumbai, Delhi, Kolkata, Chennai, Bengaluru, etc.

Question c.
Correlation between physiography and internal waterways:
Answer:
(i) Internal (Inland) waterways comprises of rivers, canals, backwaters, creeks, etc. which are the cheap means of transportation.
(ii) Deep waters, gentle slopes, absence of rapids and waterfalls and the long course of rivers are favourable factors for development of internal waterways.
(iii) The longest waterways in the world is developed in the Amazon river in Brazil which is navigable for around 3700 kms.
(iv) Perennial river like Ganga in India is navigable in its lower course but the peninsular rivers are not used due to shallow waters, shorter course, seasonal nature, etc.

Question d.
Importance of Standard Time:
Answer:
(i) Standard Time is the official time and is commonly accepted all over the country or region.
(ii) The importance of Standard Time is the most, if the country has a vast longitudinal extent, since there will be a great difference between the time of its places located in the eastern and the western parts.
(iii) It helps in making proper schedules of travel, business meeting, co-ordinating the functioning of various organisations, etc.
(iv) Thus Standard Time helps in avoiding confusion regarding day, date and time.

Class 10 Geography Chapter 9 Tourism, Transport and Communication Intext Questions and Answers

Answer the following questions on the basis of the map given.

Observe the map carefully and answer the following questions:
Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 9
Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 10
Question 1.
Name the terminal points of the North-South Corridor of Golden quadrilateral Highway.
Answer:
North – Srinagar, South – Kanyakumari.

Question 2.
Name the terminal points of East-West corridor Golden Quadrilateral highway.
Answer:
East – Silchar ; West – Porbandar.

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication

Question 3.
Name the three major ports on the western coast.
Answer:
Porbandar, Mumbai and Cochin are the three major ports on the western coast.

Question 4.
Name the three major ports on the eastern coast.
Answer:

  1. Chennai
  2. Vishakhapatnam and
  3. Haldia

Question 5.
(Kolkata) are the three major ports on the eastern coast. Which parts of India have a spare network of road transport route? Give reason.
Answer:
The northernmost part of India in the state of Jammu and Kashmir does not have any national highway or other roadways, because it is a mountainous region.

Observe the given map carefully and answer the following questions:

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 11

Question 1.
What does the map indicate ?
Answer:
The map indicates the important railway routes and airports of India.

Question 2.
Which part of India has many airports compared to the others?
Answer:
The Southern part of India (i.e.) Peninsular India has many airports compared to the other parts of India.

Question 3.
Which part of India has a dense network of rail routes?
Answer:
North Indian plains region has a dense network of rail routes.

Question 4.
Name the northernmost important railway station.
Answer:
Baramulla is the northernmost important railway station.

Question 5.
Name the easternmost important railway station.
Answer:
Tinsukia is the easternmost important railway station.

Question 6.
Name the two westernmost important railway stations.
Answer:
Okha and Naliya are the two westernmost important railway stations.

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication

Try this

Look at the graph and answer the following questions:
Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 6

Question 1.
Which country attracted more international tourists in the year 1995?
Answer:
India attracted more international tourists in the year 1995.

Question 2.
In which country did more international tourists arrive in the year 2000?
Answer:
More international tourists arrived in Brazil in the year 2000.

Question 3.
In which year can an increase be seen in the number of international tourists in India?
Answer:
An increase in the number of international tourists in India can be seen from the year 2010.

Question 4.
What was the number of international tourists in the year 2015 in both the countries? What was the difference between them?
Answer:
The number of international tourists in India in 2015 was approximately 130 lakhs. The number of international tourists in Brazil in 2015 was 60 lakhs. The difference between India and Brazil in the numbers of international tourists in 2015 was 70 lakh people. (130 lakhs – 60 lakhs).

Question 5.
What could be the reason of increase in tourists in India after the year 2010?
Answer:
There is an increase in tourists coming to India after 2010 because :

  • Different types of tourism like eco-tourism, health tourism, business tourism, etc. have been promoted by the Indian Government.
  • The quality of travel and stay in India has also improved.

Question 6.
Name the kind of graph shown above.
Answer:
Polyline graph.

Can you tell ?

Look at the graph and answer the following questions:
Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 7

Question 1.
What type of graph is shown here?
Answer:
The type of graph shown here is a Joint Bar Graph.

Question 2.
What does the graph show?
Answer:
The graph shows:

  • The percentage of population engaged in tourism in Brazil and India in 2016.
  • The contribution of tourism in GDP by both the countries in 2016.

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication

Question 3.
Which country’s tourism has a larger share in the contribution towards GDP?
Answer:
Brazil’s tourism has a larger share in the contribution towards GDP.

Question 4.
Which country has a larger population engaged in tourism sector but contributes lesser in GDP?
Answer:
India has a larger population engaged in tourism sector but contributes lesser in GDP terms.

Question 5.
How much percentage of India’s population is engaged in tourism?
Answer:
Nearly 9.5 percentage of Indian population is engaged in tourism.

Question 6.
How much is the contribution of tourism in India’s GDP in 2016? .
Answer:
The contribution of tourism in India’s GDP in 2016 is nearly 8.5 per cent.

Make friends with maps

Study the transport map of Brazil and answer the following.
Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 8

Question 1.
Which means of transport are seen on the map?
Answer:
All the means of transport like roadways, railways, airways, and waterways are seen on the map.

Question 2.
Which means of transport has a denser network?
Answer:
The roadways have a denser network.

Question 3.
Which highway can be seen prominently? Which places does it join?
Answer:
The Trans Amazonian Highway can be seen prominently. It connects Cruzeiro do sul, Porto Velho, Manaus and Brasilia.

Question 4.
What could be the reason for the development of railways in the South-East?
Answer:
(i) South-east Brazil is the richest and the most populated region of the country.
(ii) Agriculture, mining, and tourism are well developed in this part of Brazil.

Question 5.
In which part of Brazil do you see a lesser development of transport network? What could be the reason?
Answer:
(i) Amazon in the north and Pantanal in the west have lesser development of transport network.
(ii) Amazon in the north due to dense forest cover whereas Pantanal is a swampy land.

Think about it.

Question 1.
Considering the development of transport in a place, which factors do you think are responsible for the development of transport in Brazil? Also, think which means of transport could be used in Brazil given its topography and drainage?
Answer:
Considering the development of transport in a place, the factors that are responsible for the development of transport in Brazil are:

  • The physiography, accessibility, population, climatic conditions, availability of power/fuel, funds, etc.
  • Roads and ports need to be upgraded.
  • Railways are few and competitive. They can be increased in the central part.
  • With its topography and drainage Brazil should develop more waterways.

Activity

Look at the transport maps of India and the make friends with maps.
Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 9
Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 10

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 11

Question 1.
Which means of transport are visible on the map?
Answer:
The means of transport used are roadways and waterways.
The means of transport used are railways and airways.

Question 2.
In which part of India is the density of railways more?
Answer:
The density of railways is more in the Northern Plains region.

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication

Question 3.
Name five important ports and airports of India.
Answer:
Ports: Mumbai ,Vishakhapatanam, Haldia, Chennai and Kandla.
Airports: Delhi, Mumbai, Bengaluru, Chennai, and Kolkata.

Question 4.
Which parts of India have a sparse network of transport? What could be the reason?
Answer:
(i) The north and the north-east parts of India have a sparse network of transport.
(ii) Due to mountainous and snow covered areas in the north and the dense inaccesible forest areas of the north-east, the transportation network is sparse here.
(iii) Also these regions have low population and lack of economic opportunities.

Give it a try.

Question 1.
Arun called his mother from Digboi at 7 am. At what local time will his mother pick up his call at Jaisalmer?
Answer:
Arun’s mother will pick his call at 5.00 am. local time at Jaisalmer.

Question 2.
Calculate the difference in time between the two points in minutes.

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 12
Westernmost point: Nascente do Rio Moa (07° 32’33″S, 70° 59’W) Easternmost point: Ponta do Seixas, Paraiba (07° 09′ 28″S, 34° 47’W),
Answer:
The difference in time between the Easternmost and the Westernmost part of Brazil is 168 minutes.

Activity

Read the map and answer the following questions:
Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 11

Question 1.
How many divisions can you see in the map?
Answer:
We can see 4 divisions in the map.

Question 2.
What do these divisions signify?
Answer:
These divisions signify the time zones in Brazil.

Question 3.
What does the term ’behind the GMT’ mean?
Answer:
The Greenwich Meridian Time is a time set with reference to 0° longitude that passes through Greenwich. The countries lying to the west of 0° longitude are ’behind the GMT’.

Question 4.
Which part of Brazil is ahead of other?
Answer:
The easternmost part of Brazil is ahead of the other parts.

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication

Question 5.
By how many minutes is this part ahead of others?
Answer:
60 to 180 minutes.

Question 6.
What does the red line in the map show?
Answer:
The red line in the map is the official BRT which is in the GMT-03 time zone. It is 3 hours behind GMT.

Make friends with maps

Study the map given in figure and answer the following questions:
Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 13

Question 1.
Calculate the difference between the two longitudinal extremes of mainland India. Is it more than Brazil?
Answer:
The difference between the two longitudinal extremes of east and west mainland India is about 29°.

Question 2.
Which longitude in India is called the Indian Standard Time (IST)?
Answer:
The 82° 30′ E longitude is called Indian Standard Time (IST)

Question 3.
What is the difference between IST and the GMT?
Answer:
The IST time is 5 hours and 30 minutes ahead of the GMT.

Question 4.
How many local times are there in India?
Answer:
There are 29 local times.

Question 5.
How much is the time difference between the western most and the eastern most points of India?
Answer:
Two hours, 120 minutes.

Think about it.

Question 1.
It is 12 noon at Delhi. What would be the local time in Brasilia?
Answer:
If it is 12 noon at Delhi, the local time in Brasilia would be 3.30 a.m. This is because Brasilia is 3 hours behind GMT and Delhi is 5 hours 30 minutes ahead of GMT. Therefore
Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 14
Time difference between Brasilia and Delhi is of 8 hours 30 mins (3 hours + 5 hours 30 mins) Time at Delhi = 12 noon
Time at Brasilia = 12 noon – 8 hours 30 mins
= 3.30 a.m.

Use your brain power

Question 1.
Saurabh and Ashwini work for a MNC. Two of their regional head offices are located in Brazil in Rio De Janeiro and Manaus, respectively. Both of them have to contact either of the head offices constantly.
As they have to adjust timings according to their head offices, find out their corresponding timings in India, if they work according to office timings in Brazil, i.e 10 a.m. to 5 p.m.
Answer:
(i) Let us assume Saurabh is coordinating with Rio De Janeiro’s head office and Ashwini is coordinating with the head office of Manaus.
(ii) Brazil has four time zones. It is behind the GMT by 2, 3, 4 or 5 hours.
(iii) Rio De Janeiro is in the 2nd time zone which is 3 hours behind GMT (GMT-03) and Manaus is the 3rd time zone which is 4 hours behind GMT (GMT-04).
(iv) Now, the time difference between GMT and 1ST is of 5 hours 30 mins.
They have to make following adjustments :

Saurabh
Rio De JaneiroGMTIST
10 a.m.1 p.m.6.30 p.m.
5 p.m.8 p.m.1.30 a.m.
Ashwini
ManausGMTIST
10 a.m.2 p.m.7.30 p.m.
5 p.m.9 p.m.2.30 a.m.

Rio De Janeiro is in the 2nd time zone which is 3 hours behind GMT (GMT-03) and Manaus is the 3rd time zone which is 4 hours behind GMT (G
Corresponding timings in India Saurabh: 6.30 p.m. to 1.30 a.m. Ashwini: 7.30 p.m. to 2.30 a.m.

Give it a try

Question 1.
On what basis will you decide how many standard times should be there in a country?
Answer:
The longitudinal extent of a country will help one decide how many standard times should be there in a country.

Class 10 Geography Chapter 9 Tourism, Transport and Communication Additional Important Questions and Answers

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication

Choose the correct option and rewrite the statements:

Question 1.
The new capital city of Brazil is ______.
(a) Rio de Janeiro
(b) Sao Paulo
(c) Manaus
(d) Brasilia
Answer:
(d) Brasilia

Question 2.
A city that attracts a lot of tourists is _______.
(a) Rio de Janeiro
(b) Brasilia
(c) Manaus
(d) Ponta de Seixas
Answer:
(a) Rio de Janeiro

Question 3.
The proportion of the Indian population engaged in tourism is proportionately _____ Brazil.
(a) lower than
(b) higher than
(c) equal to
(d) extremely lesser than
Answer:
(b) higher than

Question 4.
The football stadium at ______ is quite well known
(a) Rio de Janeiro
(b) Manaus
(c) Sao Paulo
(d) Boa Vista
Answer:
(b) Manaus

Question 5.
The most common method of transportation in Brazil is ____.
(a) railways
(b) waterways
(c) roadways
(d) airways
Answer:
(c) roadways

Question 6.
The density of road network in Brazil is concentrated in the ____ part of the country.
(a) southern
(b) northern
(c) western
(d) eastern
Answer:
(d) eastern

Question 7.
The forested lands of the Amazon River basin and the ______ lands have limited the development of roadways in this part of Brazil.
(a) drought-prone
(b) fertile
(c) swampy
(d) semi-arid
Answer:
(c) swampy

Question 8.
Waterways have been developed on a commercial basis in the _____ river.
(a) Amazon
(b) Uruguay
(c) Purus
(d) Aragua
Answer:
(a) Amazon

Question 9.
Boats ply from _____ in Peru to the mouth of the river Amazon.
(a) Lima
(b) Cusco
(c) Equitos
(d) Nazca
Answer:
(c) Equitos

Question 10.
Apart from R. Amazon, another important river for waterways is the ____ Parana river.
(a) south-flowing
(b) north-flowing
(c) east-flowing
(d) west-flowing
Answer:
(a) south-flowing

Question 11.
The contribution of ______ is less in the transportation system of Brazil.
(a) railways
(b) roadways
(c) waterways
(d) airways
Answer:
(d) airways

Question 12.
Railway network is dense in the ______ of India.
(a) hilly states
(b) north-eastern states
(c) central parts of India
(d) north indian plains
Answer:
(b) north-eastern states

Question 13.
Approximately, 95% of foreign trade moves through ______ routes, in India.
(a) road
(b) rail
(c) air
(d) ocean
Answer:
(d) ocean

Question 14.
The westernmost extreme point on mainland Brazil is ______.
(a) Rio Grande
(b) Rio de Janeiro
(c) Nascente do Rio Moa
(d) Ponta do Seixas
Answer:
(c) Nascente do Rio Moa

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication

Question 15.
The easternmost extreme point on mainland Brazil is ______
(a) Rio Grande
(b) Sao Paulo
(c) Ponta do Seixas
(d) Nascente do Rio Moa
Answer:
(c) Ponta do Seixas

Question 16.
Brazil has ______ time zones.
(a) 3
(b) 4
(c) 5
(d) 6
Answer:
(b) 4

Question 17.
(BRT) Brazil time is _____ hours behind GMT.
(a) three
(b) four
(c) five
(d) six
Answer:
(a) three

Question 18.
Today, more than 45% of the Brazilian population has access to the ______.
(a) mobile services
(b) television broadcasting
(c) radio broadcasting
(d) internet
Answer:
(d) internet

Question 19.
The telecommunication infrastructure is fairly modern, particularly in ____ Brazil.
(a) north
(b) north-west
(c) north-east
(d) central-south
Answer:
(d) central-south

Question 20.
______ services in Brazil are well-developed and efficient.
(a) Air
(b) Railway
(c) Helicopter
(d) Telecommunication
Answer:
(d) Telecommunication

Question 21.
With regard to telecommunication infrastructure, the north and ______ are drastically less developed.
(a) south
(b) south-west
(c) north-west
(d) central-south
Answer:
(c) north-west

Question 22.
Over recent years, _______ have led to the rapid expansion of telecommunication services in Brazil.
(a) landline phones
(b) radio broadcasting
(c) television broadcasting
(d) mobile telephones
Answer:
(d) mobile telephones

Question 23.
India has ______ standard time zone/s.
(a) one
(b) two
(c) three
(d) four
Answer:
(a) one

Question 24.
The difference between the two extreme most points in India is about _____.
(a) 120 minutes
(b) 210 minutes
(c) 168 minutes
(d) 186 minutes
Answer:
(a) 120 minutes

Question 25.
The difference between the two extreme most points of Brazil is _______.
(a) 186 minutes
(b) 168 minutes
(c) 120 minutes
(d) 200 minutes
Answer:
(b) 168 minutes

Question 26.
The 82°30’E longitude is the Indian Standard Time longitude which passes though ________.
(a) Allahabad
(b) Ahmedabad
(c) Hyderabad
(d) Muzzaffarabad
Answer:
(a) Allahabad

Question 27.
India is one of the largest users of _______ and internet.
(a) landlines phones
(b) television
(c) radio
(d) smartphones
Answer:
(d) smartphones

Question 28.
About 85% of passenger and 70% of freight traffic are carried by every year in India.
(a) roadways
(b) railways
(c) waterways
(d) airways
Answer:
(a) roadways

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication

Question 29.
______is the official time of Brazil.
(a) GMT-01
(b) GMT-04
(c) GMT-03
(d) GMT-02
Answer:
(c) GMT-03

Question 30.
The prominent highway of Brazil is ________.
(a) Trans Belem Highway
(b) Trans Rio Grande Highway
(c) Trans Amazonian Highway
(d) Trans Brasilia Highway
Answer:
(c) Trans Amazonian Highway

Match the following:

Question 1.

Column ’A’Column ‘B’
(1) The new capital city(a) Rio de Janeiro
(2) The city attracting a lot of tourist(b) Manaus
(3) Football stadium(c) Peru
(4) Beach(d) Brasilia
(5) Equitos(e) Sao Paulo
(f) Boa Vista

Answer:
1 – d
2 – e
3 – b
4 – a
5 – c

Answer the following questions in one sentence:

Question 1.
State the factors that attract foreign tourists towards India.
Answer:
Foreign tourists visit India to see and understand its rich heritage and culture, for adventure, to avail the health services and for business purposes.

Question 2.
What is the kind of service provided by roadways in India?
Answer:
About 85% of passenger traffic and 70% of freight traffic are carried by roadways every year in India.

Question 3.
How important are the inland waterways in India’s transportation?
Answer:
Inland waterways comprising rivers, canals, backwaters, creeks, etc., which contribute about only 1% to India’s transportation.

Question 4.
In what way are the ocean routes useful for India?
Answer:
Approximately 95% of India’s foreign trade moves through ocean routes.

Question 5.
What kind of advanced space technology is Brazil developing?
Answer:
Brazil is developing technology to send domestically-made satellites into space with its own rockets.

Question 6.
Write a short note about the telecommunication infrastructure in different parts of Brazil.
Answer:
The telecommunication infrastructure is fairly modern, particularly in central-south Brazil, but the north and north-west are drastically less developed.

Question 7.
Why have roadways not developed in the north and north-western part?
Answer:
The forested lands of the Amazon River basin and the swampy lands have limited the development of roadways in the north and north-western region.

Question 8.
Which time zone is considered to be the official Brazilian time?
Answer:
GMT-03 Time Zone is considered to be the official Brazilian time.

Distinguish between:

Question 1.
The use of railways in Brazil and India.
Answer:

The use of railway in BrazilThe use of railway in India
(i) Railways have not developed very well in Brazil.(i) Compared to Brazil, India has a denser network of railways.
(ii) The use of trains for long distance transportation is restricted to a few urban tourist routes though it is cheaper.(ii) Freight and passenger transport have been facilitated due to the development of the railways, which are considered very important for the growth of Indian economy.
(iii) Dense network of railways have developed in south and south-east Brazil as compared to other parts of Brazil.(iii) Dense network of railways have developed in the North-Indian Plains as compared to other parts of India.

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication

Question 2.
The longitudinal extent of India and Brazil
Answer:

The longitudinal extent of BrazilThe longitudinal extent of India
(i) Extreme westernmost point: Nascente do Rio Moa. (70°59’W)(i) Extreme westernmost point : Ghuar Mota. (70°E)
(ii) Extreme easternmost point: Ponta do Seixas.(34047′ w)(ii) Extreme easternmost point: Kibithu. (97°E)
(iii) Time difference is 168 minutes approximately 2 hrs 48 minutes.(iii) Time difference is 120 minutes on mainland i.e., approximately 2 hrs.
(iv) There is a vast time difference between the extreme most points of Brazil due to vast longitudinal extent.(iv) There is comparatively less time difference between the extreme points of India.

Question 3.
The density of roadways in Brazil and India.
Answer:

The density of roadways in BrazilThe density of roadways in India
(i) Roadways account for more than half of the transportation system in the country.(i)    As compared to Brazil, India has a denser network of transport. About 85% of passenger and 70% of freight traffic are carried by road every year.
(ii) Density of road network is high in the eastern(ii) Density of road network is high in the North
part of the country.Indian Plains in the northern part of India.

Question 1.
Mark the following on an outline map of Brazil. Name the following:

  1. The new capital city of Brazil.
  2. Two cities that attract a lot of tourist.
  3. A south-flowing river important for waterways.
  4. The easternmost extreme point of mainland Brazil.
  5. The westernmost extreme point part of mainland Brazil.

Answer:
Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 15
Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 16

Question 2.
Show the following on a given outline map of Brazil.
Given index:

(A) Ports:

  • Vitoria
  • Manaus

(B) Airports:

  • Brasilia
  • Campo Grande

(C) Railway Junctions:

  • Sao Paulo
  • Rio de Janeiro

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication

Answer:

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 17
Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 18

Question 3.
Show the following on a given outline map of India. Give index:
Given index:
(A) Ports:

  • Chennai
  • Porbandar
  • Kochin
  • Kandla
  • Kolkata

(B) Airports :

  • Bengaluru
  • Delhi
  • Pune
  • Thiruvananthapuram

(C) Railway Junctions :

  • Mumbai
  • Itarsi
  • Kota
  • Nagpur

Answer:
Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 19
Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication 20

Give geographical reasons:

Question 1.
India’s contribution of tourism to its GDP appears lesser than Brazil and population engaged seems higher.
Answer:
(i) The number of international tourists visiting India in 2015 was more than that of Brazil.
(ii) Even though this is true, the share of tourism sector in the GDP is less than that of Brazil.
(iii) Apart from this, the proportion of Indian population engaged in tourism is higher than that of Brazil.
(iv) This is primarily dependent on the size of the population of those countries and the size of the GDP.
(v) According to the data available, the population of India is more than Brazil and so is its GDP.
(vi) As the GDP of India is higher than Brazil’s GDP to GDP appears lesser than Brazil’s and population engaged seems higher.

Maharashtra Board Class 10 Geography Solutions Chapter 9 Tourism, Transport and Communication

Question 2.
Railways are important for the growth of the Indian economy.
Answer:
(i) Railways are very important for a vast country like India where the distance between places is long.
(ii) Freight and passenger transport have been facilitated due to the development of the railways.
(iii) The more the facilities available for passenger transport and freight transport, the more growth in the economy.
Thus, the railways are very important for the Indian economy’s growth.

Question 3.
Brazil’s time is not ahead of India’s time.
Answer:
(i) The GMT i.e, Greenwich Mean Time, divides the globe into eastern and western hemisphere.
(ii) India lies to the east of GMT and Brazil lies to the West of GMT.
(iii) Places lying to the east of GMT, are ahead of time and places lying to the west of GMT (like Brazil) are behind time.

Question 4.
The future of tourism is bright in India.
Answer:
(i) India is rich in natural beauty that includes mountains, forests, plateaus, plains, islands, coastal areas, beaches, etc.
(ii) India also has a rich heritage and a huge variety of cultural and historical attractions.
(iii) In recent years new forms of tourism have been developed in India like Eco tourism, Agro tourism, Medical tourism, Film tourism, etc.
(iv) Also infrastructural facilities, branding and marketing initiatives have helped to promote Indian tourism.
So the future of tourism is bright in India.

Question 5.
Tourism is an invisible trade.
Answer:
(i) Tourism belongs to the service sector as various services are provided to the tourists.
(ii) For e.g., hotels, lodges, transport, food, entertainment, etc.
(iii) Tourism increase the GDP of economy without exchange of goods.
Thus, tourism is an invisible trade.

Question 6.
he indicator of development in a country is the development of transport in that country.
Answer:
(i) Transportation facilitates trade and creates employment opportunities.
(ii) With the development of transport there is socio-economic and cultural development of the country.
Hence it is an indicator of development in a country.

Must Read:

DALBHARAT Pivot Point Calculator

Class 10 Geography Textbook Solutions Answers

Chemical Reactions and Equations Class 10 Questions And Answers Maharashtra Board

Std 10 Science Part 1 Chapter 3 Chemical Reactions and Equations Question Answer Maharashtra Board

Balbharti Maharashtra State Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations Notes, Textbook Exercise Important Questions and Answers.

Class 10 Science Part 1 Chapter 3 Chemical Reactions and Equations Question Answer Maharashtra Board

Question 1.
Choose the correct option from the bracket and explain the statement giving reasons :
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double diplacement, decomposition)

a. To prevent rusting, a laver of ……… metal is applied on iron sheets.
Answer:
To prevent rusting, a layer of zinc metal is applied on iron sheets.
The rusting of iron is an oxidation process. Due to corrosion of an iron a deposit of reddish substance (Fe2O3.H2O) is formed on it. This substance is called rust. To prevent corrosion, a layer of zinc metal (galvanisation) is applied on iron sheets.

b. The conversion or ferrous sulphate to ferric sulphate is …….. reaction.
Answer:
The conversion of ferrous sulphate to ferric sulphate is an oxidation reaction.
When ferric ion is formed. from ferrous ion, the positive charge is increased by one unit. while this happens the rerrous ion loses one electron. A process in which a metal or its ion loses one or more electrons is called an oxidation.
2FeSO4 → Fe2(SO4)3
Fe2 + SO42- → 2Fe3+ + SO42-
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 1

c. When electric current is passed through acidulated water …….. of water takes place.
Answer:
when electric current is passed through acidulated water decomposition of water takes place. In this reaction. hydrogen and oxygen gas are formed.

This decomposition takes place with the help of an electric current, it is also called electrolytic decomposition.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 2

d. Addition of an aqueous solution of ZnSO4 to an aqueous solution of BaCl2 is an example of ……… reaction.
Answer:
Addition of an aqueous solution of ZnSO4 to an aqueous solution or BaCl2 is an example or double displacement reaction.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 3
Barium chloride reacts with zinc sulphate to form a white precipitate of barium sulphate. white precipitate is formed by exchange of ions Ba++ and SO4 between the reactants.

Question 2.
a. What is the reaction called when oxidation and reduction take place simultaneously? Explain with one example.
Answer:
The reaction which involves simultaneous oxidation and reduction is called an oxidation-reduction or redox reaction.
In a redox reaction, one reactant gets oxidised while the other gets reduced during a reaction.
Redox reaction = Reduction + Oxidation

In redox reaction, the reductant is oxidized by the oxidant and the oxidant is reduced by the
reductant.
Example:CuO(s) + H2(g) → Cu(s) + H2O
In this reaction, oxygen is removed from copper oxide therefore it is a reduction of CuO, while hydrogen accepts oxygen to form water that means oxidation of hydrogen takes place. Thus oxidation and reduction reactions occur simultaneously.

Other examples of redox reactions:
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 4

b. How can the rate of the chemical reaction, namely, decomposition of hydrogen peroxide be increased?
Answer:
At room temperature, the decomposition of hydrogen peroxide into water and oxygen takes place slowly. However, the same reaction occurs at a faster rate on adding manganese dioxide (MnO2),
powder in it.

c. Explain the term reactant product giving examples.
Answer:

  1. The substance which undergoes bond breaking while taking part in a chemical reaction is called reactant.
  2. The substance formed as a result of a chemical reaction by formation of new bonds is called product.
  3. Example: In a chemical reaction, the formation of carbon dioxide gas takes place by combustion of coal in air. In this reaction, coal (carbon) and oxygen (from air) are the reactants while carbon dioxide is the product.

d. Explain the types of reactions with reference to oxygen and hydrogen. Illustrate with examples.
Answer:
With reference to oxygen and hydrogen, there are two types of reaction

  1. Oxidation reaction
  2. Reduction reaction.

1. Oxidation reaction:
Examples:
(1) When carbon burns in air, it forms carbon dioxide. In this reaction carbon accepts oxygen, therefore, this is an oxidation reaction.
C(s) + O2(g) → CO2(g)

(2) When sodium reacts with ethyl alcohol, sodium ethoxide and hydrogen gas is formed. In this reaction, hydrogen is removed from ethyl alcohol, therefore this is an oxidation reaction.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 5

(3) Acidified potassium dichromate (K2Cr2O7 / H2SO4) oxidises ethly alcohol to acetic acid.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 6

2. Reduction reaction:
Examples:
(1) When hydrogen gas is passed over black copper oxide a reddish coloured layer of copper is
formed.
In this reaction an oxygen atom removed from CuO to form copper, hence, this is reduction.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 7

(2) when hydrogen gas is passed over red hot coke, methane is obtained.
Here, hydrogen is added to coke (carbon). Hence, this is reduction.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 8

e. Explain the similarity and difference in two events, namely adding NaOH to water and adding CaO to water.
Answer:
Similarity : Both NaOH and CaO, when dissolved separately in water, solid NaOH dissolves releasing heat, resulting in rise in temperature. This reaction is exothermic reaction. When solid CaO dissolves in water, Ca(OH)2 is formed, large amount of heat is evolved. This reaction is also exothermic reaction. Both reactions are combination reactions and single product is obtained.
NaOH(s) + H2O → NaOH(aq) + Heat
CaO(s) + H2O → Ca(OH)2(aq) + Heat
Difference:

  1. Aqueous solution of NaOH is considered as a strong alkali.
  2. Aqueous solution of Ca(OH)2 is considered as a weak alkali.

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 3.
Explain the following terms with examples.
a. Endothermic reaction
Answer:
Endothermic reaction: The reaction in which heat is absorbed is called an endothermic
reaction.
when KNO3(s) dissolves in water, there is absorption of heat during the reaction and the temperature of the solution falls.
KNO2(s) + H2O(l) + Heat → KNO3(aq)

b. Combination reaction
Answer:
When two or more reactants combine in a reaction to form a single product, it is called a combination reaction.
Examples:
1. The ammonia gas reacts with hydrogen chloride gas to form the salt in gaseous state, immediately it condenses at room temperature and gets transformed into the solid state.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 10

2. Magnesium burns in air to form white powder of magnesium oxide as a single product.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 11

3. Iron reacts with sulphur to form iron sulphide.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 12

c. Balanced equation
Answer:
In a chemical reaction, the number of atoms of the elements in the reactants is same as the number or atoms of those elements in the product, such an equation is called a balanced equation.
Example: AgNO3 + NaCl → AgCl + NaNO3
In the above reaction, the number of atoms of the elements in the reactants is same as the number of atoms of elements in the products.

d. Displacement reaction
Answer:
The reaction in which the place of the ion of a less reactive element in a compound is taken by another more reactive element by the formation of its own ions is called displacement reaction.

When zinc granules are added to the blue coloured copper sulphate solution, the zinc ions formed from zinc atoms take the place of Cu2+ ions in CuSO4, and copper atoms, formed from Cu2+ ions comes out i.e. the more reactive zinc displaces the less reactive Cu from copper sulphate.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 9

4. Give scientific reason:
a. When the gas formed on heating lime stone is passed through freshly prepared lime water, the lime water turns milky.
Answer:
when lime stone is heated, calcium oxide and carbon dioxide are formed. This carbon dioxide gas is passed through freshly prepared lime water, insoluble calcium carbonate and water are formed. In this reaction, lime water turns milky.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 13

b. It takes time for pieces of Shahabud tile to disappear in HCl, but its powder disappears rapidly.
Answer:
The rate of a reaction depends upon the size of the particles of the reactants taking part in the reaction. The smaller the size of the reactants particles, the more is their total surface area and the faster is the rate of reaction.

In the reaction of dil. HCl with pieces of Shahabad tile, CO2 effervescence is formed amid the tile disappears slowly. On the other hand. CO2 effervescence forms at faster rate with Shahabad tile powder and it disappears rapidly.

c. While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.
Answer:
(1) The preparation of dilute sulphuric acid falls in the category of extreme exothermic process.

(2) During the preparation of dilute sulphuric acid. large amount of water is taken in a glass container which is surrounded by ice. Cool it for twenty minutes, Now small quantity of conc. H2SO4 is added slowly with stirring. Therefore, only a small amount of heat is liberated at a time. In this way dilute sulphuric acid is prepared.

(3) On the other hand, in the process of dilution or conc. sulphuric acid with water, very large amount of heat is liberated. As a result, water gets evaported instantaneously, if it is poured in to conc. H2SO4 which may cause an accident.

d. It is recommended to use air tight container for storing oil for long time.
Answer:

  1. If edible oil is allowed to stand for a long time, it undergoes air oxidation, it becomes rancid and its smell and taste changes.
  2. Rancidity in the rood stuff cooked in oil or ghee is prevented by using antioxidants. The process of oxidation reaction of food stuff can also be slowed down by storing it in air tight container.

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 5.
Observe the following picture a write down the chemical reaction with explanation.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 14
Answer:
The rusting of iron is an oxidation process. The rust on iron does not form by a simple reaction between oxygen and iron surface. The rust is formed by an electrochemical reaction. Fe oxidises to Fe2O3. H2O on one part of iron surface while oxygen gets reduced to H2O on another part or surface, Different regions on the surface of iron become anode and cathode.
(1) Fe is oxidised to Fe2+ in the anode region.
Fe(s) → Fe2+ (aq) + 2e
(2) O2 is reduced to form water in the cathode region.
O2(g) + 4H+ (aq) + 4e— → 2H2O(l)

When Fe2+ ions migrate from the anode region they react with water and futher get oxidised to form Fe3+ ions.
A reddish coloured hydrated oxide is formed from Fe3+ ions. It is called rust. It collects on the
surface.
2Fe3+ (aq) + 4H2O(l) → Fe2O3. H2O(s) + 6H+ (aq)
Because of various components in the atmosphere, oxidation of metals takes place, consequently resulting in their damage. This is called ‘corrosion’. Iron rusts and a reddish coloured layer is formed on it. This is corrosion of iron.

Question 6.
Identify from the following reactions the reactants that undergo oxidation and reduction.
a. Fe + S → FeS
Answer:
Fe + S → FeS
In this reaction, Iron (Fe) undergoes oxidation
and sulphur. (S) undergoes reduction.

b. 2Ag2O → 4Ag + O2
Answer:
2Ag2O → 4Ag + O2
In this reaction, reduction of Ag2O takes place.

c. 2Mg + O2 → 2MgO
Answer:
2Mg + O2 → 2MgO
In this reaction, oxidation of Mg takes place.

d. NiO + H2 → Ni + H2O
Answer:
NiO + H2 → Ni + H2O
In this reaction, reduction of NiO takes place and oxidation of H2 takes place.

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 7.
Balance the following equation stepwise.
a. H2S2O7(l) + H2O(l) → H2SO4(l)
Answer:
Step 1: Rewrite the given equation as it is
H2S2O7(l) + H2O(l) → H2SO4(l)
Step 2: write the number or atoms of each element in the unbalanced equation on both sides of equations.

ElementNumber of atoms in reactant (left side)Number of atoms in products (right side)
H42
S21
O84

Step 3: To equalise the number of hydrogen atoms, sulphur atoms and oxygen atoms we use 2 as the coemficient or factor in the product.

ElementNumber of atoms in reactant (left side)Number of atoms in products (right side)
H42 × 2
S21 × 2
O84 × 2
Total1414

Now the equation becomes H2S2O7 + H2O → 2H2SO4
Now, count the atoms of each element on both sides of the equation. The number of atoms on both sides are equal. Hence, the balanced equation is
H2S2O7 + H2O → 2H2SO4
Now indicate the physical states of the reactants and products.
H2S2O7(l) + H2O(l) → 2H2SO4(l)

b. SO2(g) + H2S(aq) → S(s) + H2O(l)
Answer:
Step 1:
Rewrite the given equation as it is
SO2(g) + H2S(aq) → S(s) + H2O(l)

Step 2:
Write the number of atoms of each element in the unbalanced equation on both sides of equations.

ElementNumber of atoms in reactants (left side)Number of atoms in products (right side)
S21
O21
H22

The number of hydrogen atoms on both sides of the equation is same, therefore, equalise the number of sulphur atoms and oxygen atoms.

Step 3: To balance the number of sulphur atoms:

Number of atoms of sulphurIn reactantsIn products
S2OH2S(S)
Initially111
To balance111 × 2

To equalise the number of sulphur atoms, we use 2 as the factor in the product, now the equation becomes
SO2 + H2S → 2S + H2O

Step 4:
To equalise the number of oxygen atoms in the unbalanced equation.

Number of atoms of oxygenIn reactants (SO2)In products H2O
Initially21
To balance21 × 2

To equalise the number of sulphur atoms, we use 2 as the factor in the product i.e. H2O, now the unbalanced equation becomes
SO2 + H2S → 2S + 2H2O

Step 5:
To equalise the number of hydrogen atoms in unbalanced equation:

Number of atoms of hydrogenIn reactants (H2S)In products (H2O)
Initially24
To balance2 × 24

To equalise the number of hydrogen atoms we use 2 as the factor in the reactant i.e, H2S, now the unbalanced equation become
SO2 + 2H2S → 2S + 2H2O
Now, count the atoms of each element on both sides of the equation, there are less number of sulphur atoms in the product. Now equalise the sulphur atoms, the balanced equation becomes,
SO2 + 2H2S → 3S + 2H2O
Now indicate the physical states of reactants and products.
SO2(g) + 2H2S(aq) → 3S(s) + 2H2O(l)

c. Ag(s) + HCl(l) → AgCl ↓ + H2
Answer:
Step 1:
Rewrite the given equation as it is
Ag(s) + HCl(l) → AgCl ↓ + H2

Step 2:
write the number of atoms or each element in the unbalanced equation on both sides of equations.

ElementNumber of atoms in reactants (left side)Number of atoms in products (right side)
Ag11
H12
Cl11

The number of silver and chlorine atoms on both sides of the equation are same, therefore, equalise the number of hydrogen atoms.

Step 3:
To balance the number of hydrogen atoms.

Number of atoms of hydrogenIn reactants HClIn products H2
Initially12
To balance1 × 22

To equalise the number of hydrogen atoms, we use 2 as the factor in the product HCl, now the unbalanced equation become
Ag(s) + 2HCl → AgCl + H2

Step 4:
To balance the number of chlorine atoms:

Number of atoms of chlorineIn reactants (2HCl)In products (AgCl)
Initially21
To balance 22 ×1

To equalise the number of chlorine atoms, we use 2 as the factor in the product AgCl. now the unbalanced equation becomes
Ag + 2HCl → 2AgCl + H2
Now count the atoms of each element on both sides of the equation, there are less number of silver atoms in the reactant. Now equalise the silver atoms, the balanced equation becomes
2Ag + 2HCl → 2AgCl + H2
Now indicate the physical states of the reactunts and products
2Ag(s) + 2HCl(l) → 2AgCl ↓ + H2

d. H2SO4(aq) + NaOH(aq) → Na2SO4(aq) + H2O(l)
Answer:
Step 1:
Rewrite the given equation as it is
H2SO4(aq) + NaOH(aq) → Na2SO4(aq) + H2O(l)

Step 2:
write the number of atoms of each element in the unbalanced equation on both sides of the equation.

ElementNumber of atoms in reactantsNumber of atoms in products
Na12
S11
O55
H32

The number of oxygen atoms involved in different compounds on both sides (reactants and products) are equal. Therefore, balance the number of atoms of the second element, sodium.

Step 3:
To balance the number of sodium atoms:

Number of atoms of sodiumIn reactantsIn products
To begin with1 (in NaOH)2 (in Na2SO4)
To balance 1 × 22

To equalise the number of sodium atoms, we use 2 as the factor of NaOH in the reactants. Now, the partly balanced equation becomes as follows
H2SO4 + 2NaOH → Na2SO4 + H2O

Step 4:
Now, balance the number of hydrogen atoms:

Number of atoms of hydrogenIn reactantsIn products
To begin with(in H2SO4)
2 (in NaOH)
2 (in H2O)
To balance 42 × 2

To equalise the number of hydrogen atoms, we use 2 as the factor or H2O in the products. The equation then becomes
H2SO4 + 2NaOH → Na2SO4 + H2O
Now, count the atoms of each element on both sides of the equation. The number of atoms on both sides are equal. Hence, the balanced equation is
H2SO4 + 2NaOH → Na2SO4 + 2H2O
Now indicate the physical states of the reactants and the products.
H2SO4(aq) + 2NaOH(aq) → Na2SO4(aq) + 2H2O(l)

Question 8.
Identify the endothermic and exothermic reaction.
a. HCl + NaOH → NaCl + H2O + heat
Answer:
Exothermic reaction.

b. \(2 \mathrm{KClO}_{3}(\mathrm{s}) \stackrel{\Delta}{\longrightarrow} 2 \mathrm{KCl}(\mathrm{s})+3 \mathrm{O}_{2} \uparrow\)
Answer:
Exothermic reaction.

c. CaO + H2O → Ca(OH)2 + heat
Answer:
Exothermic reaction.

d. \(\mathrm{CaCO}_{3}(\mathrm{s}) \stackrel{\Delta}{\longrightarrow} \mathrm{CaO}(\mathrm{s})+\mathrm{CO}_{2} \uparrow\)
Answer:
Exothermic reaction.

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 9.
Match the column in the following table:

ReactantsproductsType of chemical reaction
BaCl2(aq) + ZnSO4(aq)H2CO3(aq)Displacement
2 AgCl(s)FeSO4(aq) + Cu(s)Combination
CuSO4(aq) + Fe(s)BaSO4↓ + ZnCl2(aq)Decomposition
H2O(l) + CO2(g)2Ag(s) + Cl2(g)Double displacement

Answer:

ReactantsproductsType of chemical reaction
BaCl2(aq) + ZnSO4(aq)BaSO4↓ + ZnCl2(aq)Double displacement
2 AgCl(s)2Ag(s) + Cl2(g)Decomposition
CuSO4(aq) + Fe(s)FeSO4(aq) + Cu(s)Displacement
H2O(l) + CO2(g)H2CO3(aq)Combination

Project:
Do it your self:
1. Prepare aqueous solutions or various solid salts available in the laboratory. Observe what happens when aqueous solution of sodium hydroxide is added to these. Prepare a chart of double displacement reactions based on these observation.

2. Observe and note the physical and chemical changes experienced in various incidents in your day to day 1ife.

Can you recall? (Text Book Page No.16)

Question 1.
what are the types of molecules of elements and compounds?
Answer:
Elements are divided into three classes i.e. metals, nonmetals and metalloids. When two or more elements combine chemically in a fixed proportion by weight, a compound is formed. The properties of a compound are altogether different from those of the constitutional elements.

Question 2.
what is meant by valency of element?
Answer:
The number of electrons that an atom of an element gives away or takes up while forming an ionic bond, is called the valency or that element.

Question 3.
What is the requirement for writing molecular formulae of different compounds?
How are the molecular formulae of the compounds written?
Answer:
while writing the molecular formulae of different compounds, the symbol of the radicals and their valence should be known.
The number of the ions is written as subscript on the right of the symbol or the ion. By cross multiplication of valenceies chemical formula is obtained.

Find out (Text Book Page No. 44)
Question1.
How are the blackened silver utensils and patinated (greenish) brass utensils cleaned?
Answer:
The blackened silver utensils and patinated (greenish) brass utensils are cleaned using baking soda, vinegar and lemon mix.

Use your brain power! (Text Book Page No. 35)

Question 1.
write down the physical states of reactants and products in the reaction
SO2 + 2H2S → 3S + 2H2O
Answer:
Reactants : SO2(g), 2H2S(g)
Products : 3S(s), 2H2O(l).

Question 2.
write down the physical states of reactants and products in the reaction
2Ag + 2HCl → 2AgCl + H2
Answer:
Reactants: 2Ag(s), 2HCl(l)
Products: 2AgCl ↓, H2

Question 3.
Identify the reactants and products of the following equation.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 15
Answer:
Reactants: vegetable oil, H2(g)
Product: Vanaspathi ghee

Use your brain power! (Text Book Page No. 42)

Question 1.
Which is the oxidant used for purification of drinking water?
Answer:
The chlorine based oxidants are used in the purification of drinking water.

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 2.
Why is potassium permanganate used during cleaning water tanks?
Answer:
Potassium permanganate is an oxidising agent. It oxidises dissolved iron, manganese and hydrogen sulphide into solid particles that are filtered out of the water tank. It is used to control iron bacteria growth in tank.

Can you tell? (Text Book Page No. 43)

Question 1.
what is the type of this reaction, in which Vanaspathi ghee is formed from vegetable oil?
Answer:
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 16
In the preparation of vanaspathi ghee from vegetable oil hydrogen gas is used. This process is known as hydrogenation. This is reduction reaction.

Find out (Text Book page No. 33)

What are the other uses of silver nitrate in every day life?
Answer:
Silver nitrate is used in the voters-ink. It is used as reactant in the laboratory. Silver nitrate is used to prevent infection in wounds and skin burns.

Use your brain power! (Text Book Page No. 35)

Question 1.
N2(g) + H2(g) ⇌ NH3(g)
Answer:
Step 1:
Rewrite the given equation as it is
N2(g) + H2(g) ⇌ NH3(g)

Step 2:
Write the number of atoms of each element in the unbalanced equation on both sides of equations

ElementNumber of atoms in reactantsNumber of atoms in products
N21
H23

Step 3:
In the given equation. NH3 is a compound and it contains hydrogen element. On the left hand side there are two H atoms and on the right side 3H atoms. Equalise H atoms on both sides.

Hydrogen atomsIn reactantsIn products
Initially23
To balance3 × 22 × 3

To equalise the number of hydrogen atoms, we use 3 as the factor in the reactant and 2 as the factor in the products. Now the equation becomes
N2 + 3H2 → 2NH3
Now, count the atoms of each element on both sides of the equation. The number of atoms on both sides are equal. Hence, the balanced equation is
N2 + 3H2 → 2NH3
Now indicate the physical states of the reactants and products
N2(g) + 3H2(g) ⇌ 2NH3(g)

Question 2.
Calcium chloride + Sulphuric acid → Calcium sulphate + Hydrogen chloride.
Answer:
Step 1:
Write the chemical equation from the given word equation.
CaCl2 + H2SO4 → CaSO4 + HCl

Step 2:
Write the number of atoms of each element in the unbalanced on both sides of equation.

ElementNumber of atoms in reactantsNumber of atoms in products
Ca11
Cl21
H21
S11
O44

Step 3:
In the given equation H2SO4 is a compound and it contains hygrogen element. On the left hand side there are two hydrogen atoms and on the right side one hydrogen atom. Equalise H atoms on both sides.

Hydrogen atomsIn reactants (H2SO4)In products (HCl)
Initially21
To balance22  × 1

To equalise the number of hydrogen atoms we use 2 as the factor in the product so that the number of H atoms on both sides are equal. Therefore, the equation becomes
CaCl2 + H2SO4 → CaSO4 + 2 HCl
Now, count the atoms of each element on both sides of the equation. The number of atoms on both sides are equal hence, the balanced equation is
CaCl2 + H2SO4 → CaSO4 + 2 HCl
Now, indicate the physical state of the reactants and products.
CaCl2(s) + H2SO4(l) → CaSO4(s) + HCl(l)

Can you tell? (Text Book Page No. 39)

Take into account the time required for following processes. Classify them into two groups and give titles to the groups.
(1) Cooking gas starts burning on ignition.
(2) Iron article undergoes rusting.
(3) Erosion of rocks takes place to form soil.
(4) Alcohol is formed on mixing yeast in glucose solution under proper condition.
(5) Effervescence is formed on adding baking soda into a test tube containing dilute acid.
(6) A white precipitate is formed on adding dilute sulphuric acid to barium chloride solution.
Answer:
The above processes are classified into two groups (a) slow speed reactions (b) fast speed reactions.
Slow speed reactions: (2), (3) and (4).
Fast speed reactions: (1),(5) and (6).

Maharashtra Board Solutions

Use your brain power! (Text Book Page No. 43)

Question 1.
Some more examples of redox reaction are as follows. Identify the reductants and oxidants from them.
(1) 2H2S + SO2 → 3S↓ + 2H2O
(2) MnO2 + 4HCl → MnCl2 + 2H2O + Cl2
Answer:
Oxidants: SO2, MnO2
Reductants: H2S, HCl

Question 2.
If oxidation means losing electrons, what is meant by reduction.
Answer:
Reduction means gaining one or more electrons.

Question 3.
Write the reaction of formation of Fe2+ by reduction Fe3+ by making use of the symbol (e).
Answer:
Fe3+ + e → Fe2+ (reduction)

Think about it (Text Book Page No. 43)

Question 1.
The luster of the surface of the aluminium utensils in the house is lost after a few days. Why does this happen?
Answer:
The aluminium utensils when kept in the house for a few days, oxidation of aluminium takes place, a thin laver aluminium oxide (Al2O3) is deposited on the surface. Hence, aluminium utensils lose their lustre in a few days.

Question 3.
How many products are formed in each of the above reactions?
Answer:
A single product is formed in each of the above reaction.

Use your brain power! (Text Book Page No. 39)

Question 1.
What is the difference in the process of dissolution and a chemical reaction.
Answer:
In the process of dissolution, new substance is not necessarily formed. Whereas in a chemical reaction a new substance is definitely formed.

Question 2.
Does a new substance form when a solute dissolves in a solvent?
Answer:
It is not necessary that a new substance is always formed.

Fill in the blanks:

Question 1.
Organic waste is decomposed by micro-organism and as a result manure and……..are formed.
Answer:
Organic waste is decomposed by micro-organism and as a result manure and bio gas are formed.

Question 2.
……….is formed on mixing yeast in glucose solution under proper condition.
Answer:
Alcohol is formed on mixing yeast in glucose solution under proper condition.

Question 3.
The chemical reaction during which H2(g) is lost is termed as………
Answer:
The chemical reaction during which H2(g) s lost is termed as oxidation.

Question 4.
Corrosion can be prevented by using………
Answer:
Corrosion can be prevented by using antirust solution.

Question 5.
The chemical reactions in which heat is liberated are called………..reactions.
Answer:
The chemical reactions in which heat is liberated are called exothermic reactions.

Question 6.
The chemical formula of rust is………
Answer:
The chemical formula of rust is Fe2O3.H2O.

Question 7.
A reaction in which heat is absorbed is called………reaction.
Answer:
A reaction in which heat is absorbed is called endothermic reaction.

Question 8.
The process of rusting or iron is………process.
Answer:
The process of rusting of iron is oxidation process.

Question 9.
when oil and fats are oxidised or even allowed to stand in air for a long time, they become ……….
Answer:
when oil and fats are oxidised or even allowed to stand in air for a long time, they become rancid.

Question 10.
……… are used to prevent oxidation of food.
Answer:
Antioxidants are used to prevent oxidation of food.

Question 11.
Carbon dioxide is passed through water. The reaction is a………reaction.
Answer:
Carbon dioxide is passed through water. The reaction is a combination reaction.

Question 12.
Calcium carbonate is heated. The reaction is a………..reaction.
Answer:
Calcium carbonate is heated. The reaction is a decomposition reaction.

Question 13.
Zinc strip is dipped in a CuSO4 solution. The reaction is a……….reaction.
Answer:
Zinc strip is dipped in a CuSO4 solution. The reaction is a displacement reaction.

Question 14.
Silver nitrate solution is added to NaCl solution. The reaction is a……….reaction.
Answer:
Silver nitrate solution is added to NaCl solution. The reaction is a double displacement reaction.

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 15.
The slow process of decay or destruction of a metal due to effect of air, moisture and acids on it is known as……….
Answer:
The slow process of decay or destruction of a metal due to effect of air, moisture and acids on it is known as corrosion.

Rewrite the following statements by selecting the correct options:

Question 1.
The reaction of iron nail with copper sulphate solution is………reaction. (March 2019)
(a) double displacement
(b) displacement
(c) combination
(d) decomposition
Answer:
(b) displacement

Question 2.
Reddish brown deposit formed on iron nails kept in a solution of copper sulphate is
(a) Cu2O
(b) Cu
(c) CuO
(d) CuS
Answer:
(b) Cu

Question 3.
The reaction CuSO4(aq) + Zn(s) → ZnSO4(aq) + Cu(s) is a……..reaction.
(a) displacement
(b) double displacement
(c) decomposition
(d) combination
Answer:
(a) displacement

Question 4.
………is a combination reaction.
(a) Cu + H2SO4 → CuSO4 + H2
(b) H2 + Cl2 → 2HCl
(c) \(2 \mathrm{HgO} \stackrel{\Delta}{\longrightarrow} 2 \mathrm{Hg}+\mathrm{O}_{2}\)
(d) \(\mathrm{CaCO}_{3} \stackrel{\Delta}{\longrightarrow} \mathrm{CaO}+\mathrm{CO}_{2}\)
Answer:
(b) H2 + Cl2 → 2HCl

Question 5.
………..a decomposition reaction.
(a) \(\mathrm{CaCO}_{3} \stackrel{\Delta}{\longrightarrow} \mathrm{CaO}+\mathrm{CO}_{2}\)
(b) H2O + CO2 → H2CO3
(c) CaS + 2HCl → CaCl2 + H2S
(d) 2H2 + O2 → 2H2O
Answer:
(a) \(\mathrm{CaCO}_{3} \stackrel{\Delta}{\longrightarrow} \mathrm{CaO}+\mathrm{CO}_{2}\)

Question 6.
In a chemical equation the……….are written on the left hand side.
(a) products
(b) reactants
(c) catalysts
(d) elements
Answer:
(b) reactants

Question 7.
The Δ sign written above the arrow indicates………..of the reaction.
(a) reactant
(b) product
(c) heat
(d) direction of the reaction
Answer:
(c) heat

Question 8.
The reaction KNO3(S) + H2O(l) + Heat → KNO3(aq) is a/an……….reaction.
(a) exothermic
(b) endothermic
(c) oxidation
(d) reduction
Answer:
(b) endothermic

Question 9.
The reaction NaOH(S) + H2O(l) → NaOH(aq) is a/an……..reaction.
(a) exothermic
(b) endothermic
(c) oxidation
(d) reduction
Answer:
(a) exothermic

Question 10.
A solution of Al2(SO4)3 in water is……….
(a) blue
(b) pink
(c) green
(d) colourless
Answer:
(d) colourless

Question 11.
Carbon dioxide………..
(a) turns lime water milky
(b) is odourless
(c) is colourless
(d) All the three (a), (b) and (c) are correct
Answer:
(d) All the three (a), (b) and (c) are correct

Question 12.
……….is the correct set up to pass CO2 through lime water.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 17
Answer:
Correct set up D.

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 13.
when……..is passed through fresh lime water, it turns milky.
(a) H2
(b) CO
(c) CO2
(d) SO2
Answer:
(c) CO2

Question 14.
Magnesium reacts with con. HCl to form………..salt.
(a) copper chloride
(b) ferrous chloride
(c) calcium chloride
(d) magnesium chloride
Answer:
(d) magnesium chloride

Question 15.
Zinc reacts with hydrochloric acid. The reaction is a reaction.
(a) combination
(b) decomposition
(c) displacement
(d) double decomposition
Answer:
(c) displacement

Question 16.
In a double displacement reaction,………… (Practice Activity Sheet – 1)
(a) ions remain at rest
(b) ions get liberated
(c) ions are exchanged
(d) ions are not created
Answer:
(c) ions are exchanged

State whether the following statements are True or False:

Question 1.
Rusting of iron is a fast reaction.
Answer:
False. (Rusting of iron is a slow reaction.)

Question 2.
Milk is set into curd is a chemical change.
Answer:
True.

Question 3.
The reaction between salt and water is an example of exothermic reaction.
Answer:
False. (The reaction between salt and water is an example of endothermic reaction.)

Question 4.
The speed of a chemical reaction depends on the catalyst used in the chemical reaction.
Answer:
True.

Maharashtra Board Solutions

Question 5.
The simple form of representation of a chemical reaction in words is known as word reaction.
Answer:
True.

Question 6.
Nascent oxygen is always denoted by showing the symbol of oxygen.
Answer:
False. (Nascent oxygen is always denoted by showing symbol of oxygen [0] in square brackets.)

Question 7.
Antioxidants are used to prevent oxidation or food containing fats and oils.
Answer:
True.

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 8.
When oils and fats are allowed to stand for a long time, they become rancid.
Answer:
True.

Question 9.
The chemical formula of rust is Fe3O4 .xH2O.
Answer:
False. (The chemical formula or rust is Fe2O3 .xH2O.)

Question 10.
Glucose combines with oxygen in our body and provides energy. The reaction is an endothermic reaction.
Answer:
False. (Glucose combines with oxygen in our body and provides energy. The reaction is an exothermic reaction.)

Question 11.
Chemical reactions in which reactants gain oxygen are reduction reactions.
Answer:
False. (Chemical reactions in which reactants gain oxygen are oxidation reactions.)

Question 12.
CuSO4(aq) + Znl(s) → ZnlSO4(aq) + Cu(s) is an example of decomposition reaction.
Answer:
False. (It is an example of displacement reaction.)

Question 13.
The chemical reactions in which heat is liberated are called endothermic reactions.
Answer:
False. (The chemical reactions in which heat is liberated are called exothermic reactions.)

Question 14.
The product or insoluble solid in chemical reaction is indicated by an arrow pointing upwards.
Answer:
False. (The product or insoluble solid in chemical reaction is indicated by an arrow ↑ pointing downwards.)

Question 15.
The rate of a reaction increases on increasing the temperature.
Answer:
True.

Question 16.
The digestion of food is a chemical decomposition process.
Answer:
True.

Question 17.
The reaction between sodium hydroxide and hydrochloric acid is a slow reaction.
Answer:
False (The reaction between sodium hydroxide and hydrochloric acid is a fast reaction.)

Question 18.
When calcium carbonate is heated, it decomposes into calcium oxide and oxygen gas.
Answer:
False (when calcium carbonate is heated. it decomposes into calcium oxide and carbon dioxide gas.

Question 19.
The rate of a chemical reaction changes in presence of catalyst.
Answer:
True.

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 20.
Chlorines is an oxidant.
Answer:
True.

Taking into consideration the relationship in the first pair, complete the second pair. (OR) Complete the following:

Question 1.
2H2 + O2 → 2H2O Combination reaction :: 2HgO → 2Hg + O2 :……….
Answer:
Decomposition reaction

Question 2.
NH3 + HCl → NH4Cl : Combination reaction :: Fe + CuSO4 → FeSO4 + Cu :……..
Answer:
Displacement reaction

Question 3.
2C2H5OH + 2Na → 2C2H5ONa + H2 : Oxidation :: CuO + H2 → Cu + H2O :……….
Answer:
Reduction

Question 4.
CuCl2 + 2KI → CuI2 + 2KCl : Double displacement :: Zn + 2HCl → ZnCl2 + H2 :……….
Answer:
Displacement reaction

Question 5.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 18
Answer:
Combination reaction

Question 6.
CuI2 : Brown :: AgCl :……….
Answer:
White.

Match the column in the following table:

Question 1.

ReactantsproductsType of chemical reaction
Fe + SNaCl + H2OOxidation
CuSO4 + Zn2CuONeutralization
2Cu + O2ZnSO4 + CuDisplacement
HCl + NaOHFeSCombination

Answer:

ReactantsproductsType of chemical reaction
Fe + SFeSCombination
CuSO4 + ZnZnSO4 + CuDisplacement
2Cu + O22CuOOxidation
HCl + NaOHNaCl + H2ONeutralization

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Rewrite the second column so as to match the item from first column or Match the following:

Question 1.

Column IColumn II
1. Reduction(a) Type of a chemical reaction
2. Oxidation(b) Combination with hydrogen
3. Double displacement(c) Losing hydrogen
4. Displacement(d) Exchange of ions

Answer:
(1) Reduction – Combination with hydrogen
(2) Oxidation – Losing hydrogen
(3) Double displacement – Exchange of ions
(4) Displacement – Type of chemical reaction.

Question 2.

Column IColumn II
1. Oils and fats are allowed to stand in air for a long time(a) Slow  reaction
2. NaOH dissolves in water(b) Rancid
3. Zinc is added to CuSO4 solution(c) Exothermic reaction
4. Rusting of water(d) Colourless Solution

Answer:
(1) Oils and fats are allowed to stand in air for a long time – Rancid
(2) NaOH dissolves in water – Exothermic reaction
(3) Zinc is added to CuSO2 solution – Colourless solution
(4) Rusting of iron – Slow reaction.

Question 3.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 77
Answer:
(1) Combination reaction – 2Cu +O4 → 2CuO
(2) Double displacement reaction – AgNO3 + NaCl → AgCl ↓ + NaNO3
(3) Decomposition reaction – \(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11(\mathrm{s})} \stackrel{\Delta}{\longrightarrow} 12 \mathrm{C}_{(\mathrm{s})}+11 \mathrm{H}_{2} \mathrm{O}_{(\mathrm{g})}\)
(4) Displacement reaction – Zn+ 2HCl → ZnCl2 + H2

Classify each of the following reactions as combination, decomposition, displacement or double displacement reactions:

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 19
Answer:
Combination reaction

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 20
Answer:
Decomposition reaction

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 21
Answer:
Displacement reaction

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 22
Answer:
double displacement reaction

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 23
Answer:
Combination reaction

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 24
Answer:
double displacement reaction

Name the following:

Question 1.
The product formed in the thermal decomposition of sugar.
Answer:
Carbon is formed in the thermal decomposition of sugar.

Question 2.
The gas evolved when sorghum metal reacts with ethanol.
Answer:
Hydrogen (H2) gas is evolved when sodium metal reacts with ethanol.

Question 3.
The precipitate formed when barium sulphide reacts with zinc sulphate.
Answer:
When barium sulphide reacts with zinc sulphide, a precipitate of barium sulphate is formed.
\(\mathrm{BaS}+\mathrm{ZnSO}_{4} \longrightarrow \underset{\text { precipitate }}{\mathrm{BaSO}_{4}}+\mathrm{ZnS}\)

Question 4.
The reducing agent used for the reduction of copper oxide.
Answer:
Hydrogen is used for the reduction of copper oxide.

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 5.
The catalyst used to accelerate the rate of decomposition of hydrogen peroxide.
Answer:
Manganese dioxide (MnO2) is used as a catalyst to accelerate the rate of decomposition of hydrogen peroxide.

Question 6.
which oxidising agent is used to oxidise ferrous sulphate.
Answer:
Potassium permanganate (KMnO4) is used as an oxidising agent to oxidise ferrous sulphate.

Question 7.
The product formed in the oxidation of ethyl alcohol.
Answer:
Acetic acid is formed in the oxidation of ethyl alcohol.

Answer the following questions in one sentence each:

Question 1.
what is meant by a chemical equation?
Answer:
The simple representation or a chemical reaction in a condensed form with the help of chemical formulae is called a chemical equation.

Question 2.
what is meant by a word equation?
Answer:
The simple form or representation or a chemical reaction in words is known as word equation.

Question 3.
what happens in a combination reaction?
Answer:
A single compound (product) is formed from two or more substances during a combination reaction.

Question 4.
what happens in a displacement reaction?
Answer:
In a displacement reaction. a more reactive element displaces another element, having less reactivity, from its compound.

Question 5.
what happens in a decomposition reaction?
Answer:
A single substance is broken down and two or more substances are formed during a decomposition reaction.

Question 6.
what happens in a double displacement reaction?
Answer:
A precipitate is formed by exchange of ions between the reactants during a double displacement reaction.

Question 7.
IdentIry the type of following reaction:
\(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11} \stackrel{\Delta}{\longrightarrow} 12 \mathrm{C}+11 \mathrm{H}_{2} \mathrm{O}\) (Practice Activity Sheet – 2)
Answer:
The above reaction is a decomposition reaction.

Question 8.
what happens in an endothermic reaction?
Answer:
In an endothermic reaction, the reactants absorb heat to form products.

Question 9.
State the use of antioxidants in food containing fats and oils.
Answer:
Antioxidants are used to prevent oxidation of food containing fats and oils.

Question 10.
What are edible oils?
Answer:
Edible oils are compounds of alcohols and organic acids (carboxylic acids). The compounds formed are known as esters of carboxylic acids.

Question 11.
Is rancidity a phenomenon of oxidation or reduction?
Answer:
Rancidity is a phenomenon of oxidation.

Answer the following questions:

Question 1.
What do you understand by a physical change?
OR
Define physical change.
Answer:
The change in which only the physical state of a substance is changed; no new substance is formed. This change is temporary. During this change the composition of the substance does not change.

Question 2.
Explain giving two examples or physical change.
Answer:
(1) Conversion of ice into water is a physical change. On heating, ice melts into water. when the water is cooled, it freezes into ice. Thus, we get ice from water by a simple method and no new substance is formed. Hence, conversion of ice into water is a physical change.

(2) Magnetization of iron nail is a physical change. An iron nail magnetized by induction loses its magnetism as soon as it is detached from the magnet which induces magnetism in it. An iron nail magnetized by some other methods can also be demagnetized by simple means such as hammering or heating it. Thus, the magnetization of an iron nail can be easily reversed to get original nail. Hence, it is a physical change.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 25

Question 3.
what do you understand by a chemical change?
OR
Define Chemical change.
Answer:
The change in which a substance or substances are converted into a new substance or substances, possessing properties altogether different from the original ones, is called a chemcial change. During this change, the original substance cannot be recovered by any simple means. This change is permanent.

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 4.
Explain giving two examples of chemical change.
Answer:
(1) When carbon is burnt, carbon dioxide is formed. In this process carbon combines with oxygen, therefore carbon and oxygen are reactants, while curbon dioxide is a product. This change is permanent.
\(\mathrm{C}_{(\mathrm{s})}+\mathrm{O}_{2(\mathrm{g})} \stackrel{\text { Heat }}{\longrightarrow} \mathrm{CO}_{2(\mathrm{g})}\)

(2) When a magnesium wire is burnt in air, a white powder of magnesium oxide is formed. We cannot obtain magnesium from magnesium oxide by simple methods. Properties of magnesium oxide are altogether different from those of magnesium. A new substance MgO is formed in the reaction. Hence, this change is a chemical change.
\(\begin{array}{c}
2 \mathrm{Mg} \\
\text { Magnesium }
\end{array}+\mathrm{O}_{2} \stackrel{\Delta}{\longrightarrow} \begin{array}{c}
2 \mathrm{MgO} \\
\text { Magnesium oxide }
\end{array}\)
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 26

Question 5.
What is meant by a chemical reaction?
Answer:
A process in which some substances undergo bond breaking and are transformed into new substances by formation of new bonds is called a chemical reaction.

Question 6.
What is the importance of a chemical equation?
Answer:

  1. Reactants are converted into products.
  2. Mass is conserved.
  3. Atoms are conserved.
  4. The properties and compositions of the products of a chemical reaction are different from those of its reactants.
  5. Generally, energy is either absorbed or evolved.

Question 7.
What are the conventions used in writing a chemical equation?
Answer:
Conventions used in writing a chemical equation:
(1) The reactants are written on the left hand side (LHS), while the products are written on the right hand side (RHS).

(2) Whenever there are two or more reactants, a plus sign (+) is written between each two of them. Similarly, if there are two or more products, a plus sign is written between each two of them.

(3) Reactant side and product side are connected with an arrow (→) pointing from reactants to products. The arrow represents the direction of the reaction. Heat is to be given from outside to the reaction, it is indicated by the sign Δ written above the arrow.

(4) The conditions like temperature, pressure, catalyst, etc., are mentioned above the arrow (→) pointing towards the product side.

(5) The physical states of the reactants and products are also mentioned in a chemical equation. The notations g, l, s, and aq are written in brackets as a subscript along with the symbols / formulae of reactants and products. The symbols g, l, s, and aq stand for gaseous, 1iquid. solid and aqueous respectively.

If the product is gaseous, instead of (g) it can be indicated by an arrow ↑ pointing upwards. If the product formed is insoluble solid, then instead of (s) it can be indicated by an arrow ↓ pointing downwards.

(6) Special information or names of reactants/products are written below their formulae.

Write the balanced equations for the following reactions:

Question 1.
Ba(OH)2 + HBr → BaBr2 + H2O
Answer:
Step 1:
Rewrite the given equation as it is
Ba(OH)2 + HBr → BaBr2 + H2O

Step 2:
write the number of atoms of each element in the unbalanced equation on both sides of the equation.

ElementNumber of atoms in reactantsNumber of atoms in products
Ba11
Br12
O21
H32

Step 3:
To balance the number of oxygen atoms:

Number of atoms of oxygenIn reactantsIn products
To begin with2 [in Ba(OH)2]1 (in H2O)
To balance21 × 2

To equalise the number of oxygen atoms, we use 2 as the coefficient of H2O in the product.
Now, the partly balanced equation become as follows
Ba(OH)2 + HBr → BaBr2 + 2H2O

Step 4:
Now, balance the number of hydrogen atoms.
In the partly balanced equation:

Number of atoms of hydrogenIn reactantsIn products
To begin with2 [in Ba(OH)2]
1 (in HBr)
4 (in 2H2O)
To balance1 × 2 + 24

To equalise the number of hydrogen atoms, we use 2 as the coefficient of HBr in the reactants. Now, the equation becomes
Ba(OH)2 + 2HBr → BaBr2 + 2H2O
Now, count the atoms or each element on both sides of the equation. The number of atoms on both
sides are equal. Hence, the balanced equation is
Ba(OH)2 + 2HBr → BaBr2 +2H2O
Now indicate the physical states of the reactants and products.
Ba(OH)2(aq) + 2HBr(aq) → BaBr2(aq) +2H2O(l)

Question 2.
KCN + H2SO4 → K2SO4 + HCN
Answer:
Step 1:
Rewrite the given equation as it is
KCN + H2SO4 → K2SO4 + HCN

Step 2:
Write the number of atoms of each element or group in the unbalanced equation on both sides of the equation.

ElementNumber of atoms in reactantsNumber of atoms in products
K12
CN (group)11
O44
H21
S11

The number of oxygen atoms involved in different compounds on both sides (reactants and products) are equal. Therefore, balance the number of atoms of the second element, potassium.

Step 3:
To balance K atoms:

Number of atoms of PotassiumIn reactantsIn products
To begin with2 (KCN)2 (in K2SO4)
To balance1 × 22

To equalise the number of potassium atoms, we use 2 as the coefficient of KCN in the reactants.
Now, the partly balanced equation becomes
2KCN + H2SO4 → K2SO4 + 2HCN
Now, count the atoms of each element on both sides of the equation. The number of atoms on both sides are equal. Hence, the balanced equation is
2KCN + H2SO4 → KgSO4 + 2HCN
Now indicate the physical states of the reactants and the products.
2KCN(aq) + H2SO4(aq) → K2SO4(aq) + 2HCN(g)

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 3.
CH4 + O2 → 4CO2 + H2O
Answer:
Step 1:
Rewrite the given equation as it is
CH4 + O2 → 4CO2 + H2O

Step 2:
Write the number of atoms of each element in the unbalanced equation on both sides of the equation.

ElementNumber of atoms in reactantsNumber of atoms in products
C11
O23
H42

Step 3:
To balance the number of oxygen atoms:

Number of atoms of oxygenIn reactantsIn products
To begin with2 (in O2)1 (in H2O)
2 (in CO2)
To balance2 × 21 × 2 + 2

To equalise the number of oxygen atoms, we use 2 as the coefficient of O2 in the reactants and 2 as the coefficient of H2O in the product.
Now, the partly balanced equation becomes
CH4 + 2O2 → CO2 + 2H2O
Now, count the atoms of each element on both sides of the equation. The number of atoms on both sides are equal. Hence, the balanced equation is,
CH4 + 2O2 → CO2 + 2H2O
Now, indicate the physical states of the reactants and the products.
CH4(g) + 2O2(g) → CO2(g) + 2H2O(l)

Answer the following questions:

Question 1.
what are the different types of chemical reaction?
Answer:
Types of chemical reaction

  1. Combination reaction
  2. Decomposition reaction
  3. Displacement reaction
  4. Double displacement reaction.

Question 2.
What is meant by a combination reaction?
OR
Define: combination reaction.
Answer:
When two or more reactants combine in a reaction to form a single product, it is called a combination reaction.

Question 3.
Give two examples of combination reaction.
Answer:
Examples of combination reaction :
(1) The ammonia gas reacts with hydrogen chloride gas to form the salt in gaseous state, immediately it condenses at room temperature and gets transformed into the solid state.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 27

(2) Magnesium burns in air to form white powder of magnesium oxide as a single product.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 28

(3) Iron reacts with sulphur to form iron sulphide.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 29

Question 4.
What Is meant by a decomposition reaction?
Answer:
The chemical reaction in which two or more products are formed from a single reactant is called decomposition reaction.

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 5.
what is meant by a thermal decomposition?
Answer:
The reaction in which a compound is decomposed by heating it to a high temperature is called thermal decomposition.

Question 6.
What is meant by a electrolytic decomposition?
Answer:
The reaction in which a compound is decomposed by passing an electric current through its solution or molten mass is called an electrolytic decomposition.

Question 7.
Give two examples of thermal decomposition.
Answer:
(1) At high temperature, calcium carbonate decomposes into calcium oxide and carbon dioxide.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 30

(2) At high temperature sugar decomposes into black mass of carbon and water vapour.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 31

Question 8.
Give an example of electrolytic decomposition.
Answer:
When an electric current is passed through acidified water, it is electrolysed giving hydrogen
and oxygen.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 32

Question 9.
Study the following reaction and answer the questions asked.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 33
(a) State the type of reaction.
(b) Define this reaction. (Practice Activity Sheet – 1)
Answer:
(a) The type of reaction is electrolytic decomposition reaction.
(b) The reaction in which a compound is decomposed by passing an electric current through its solution or molten mass is called an electrolytic decomposition.

Question 10.
what is meant by a displacement reaction?
Answer:
The reaction in which the place of the ion of a less reactive element in a compound is taken by another more reactive element by formation of its own ions, is called displacement reaction.

Maharashtra Board Solutions

Question 11.
Give an example of displacement reaction.
Answer:
when zinc granules are added to the blue coloured copper sulphate solution, the zinc ions formed from zinc atoms take the place or Cu2+ ions in CuSO4, and copper atoms, formed from Cu2+ ions comes out i.e. the more reactive zinc displaces the less reactive Cu from copper sulphate.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 34

Question 12.
Observe the reaction and answer the following questions.
CuSO4(aq) + Fe(s) → FeSO4(aq) + Cu(s)
(a) Identify and write the type of chemical reaction.
(b) write the definition of above reaction. (Practice Activity Sheet – 3)
Answer:
(a) When iron powder is added to the blue coloured copper sulphate solution, the iron ions formed from iron atoms take the place or Cu2+ ions in CuSO4, and copper atoms, formed from Cu2+ ions comes out i.e. the more reactive iron displaces the less reactive Cu from copper sulphate. Therefore this reaction is a displacement reaction.

(b) The reaction in which the place of the ion of a less reactive element in a compound is taken by another more reactive element by formation of its own ions, is called displacement reaction.

Question 13.
what is meant by a double displacement reaction?
Answer:
The reaction in which the ions in the reactants are exchanged to form a precipitate is called double displacement reaction.

Question 14.
Give two examples of double displacement reaction.
Answer:
(1) Solutions of sodium chloride and silver nitrate react with each other forming a precipitate of silver chloride and a solution of sodium nitrate.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 35
White precipitate of AgCl is formed by exchange of ions Ag+ and Cl between the reactants.

(2) Barium suiphide reacts with zinc sulphate to form zinc sulphide and a white precipitate of barium sulphate.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 36
white precipitate is formed by exchange of ions Ba++ and SO4 between the reactants.

Question 15.
Write down what you understand from the following chemical reaction:
AgNO3(aq) + NaCl(aq) → AgCl ↓ + NaNO3(aq)
Answer:
(i) The above reaction is a double displacement reaction.
(ii) AgNO3 and NaCl are the reactants while AgCl and NaNO3 are the products.
(iii) The reactants and the product NaNO3 are in aqueous state. The product AgCl is formed in the form of precipitate.

Question 16.
Study the following chemical reaction and answer the questions given below:
AgNO3(aq) + NaCl(aq) → AgCl(s)↓ + NaNO3(aq)
(i) Identiry and write the type of chemical reaction.
(ii) write the definition of above type of chemical reaction.
(iii) Write the names of reactants and products of above reaction. (March 2019)
Answer:
(i) The type of chemical reaction: Double displacement reaction.
(ii) The reaction in which the ions in the reactants are exchanged to form a precipitate is called double displacement reaction.
(iii)

  1. The above reaction is a double displacement reaction.
  2. AgNO3 and NaCl are the reactants while AgCl and NaNO3 are the products.
  3. The reactants and the product NaNO3 are in aqueous state. The product AgCl is formed in the form of precipitate.

Question 17.
When sodium chromate solution is mixed with barium sulphate solution, a precipitate is formed.
(i) What is the colour of the precipitate formed?
(ii) Name the precipitate.
(iii) What is the type of chemical reaction?
Answer:
(i) The colour of the precipitate is yellow.
(ii) The yellow precipitate formed is barium chromate.
(iii) The type of chemical reaction is double displacement.

Question 18.
Explain the term Exothermic reaction.
Answer:
Exothermic reaction : The process in which heat is given out is called an exothermic reaction.
When NaOH(s) dissolves in water, there is evolution of heat leading to a rise in temperature.
NOH(s) + H3O(l) → NaOH(aq) + Heat

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 19.
State whether the following reactions are exothermic or endothermic:
(i) 3CaO. Al2O3(s) + 6H2O(l) → 3CaO. Al2O3. 6H2O(s) + Heat
Answer:
Exothermic reaction

(ii) 2CaSO4. H2O + 3H2O → 2CaSO4. 2H2O + Heat
Answer:
Exothermic reaction

(iii) KNO3(aq) + H2O(l) + Heat → KNO3(aq)
Answer:
Endothermic reaction

(iv) NaOH(s) + H2O(l) → NaOH(aq) + Heat
Answer:
Exothermic reaction

(v) Transformation of ice into water.
Answer:
Endothermic reaction

(vi) Water turns into ice.
Answer:
Exothermic reaction

(vii) Cooking of food.
Answer:
Endothermic reaction

(viii) Burning candle.
Answer:
Exothermic reaction

Question 20.
What do you mean by slow speed reaction?
OR
Define: Slow speed reaction.
Answer:
The reaction which requires long time for completion i.e. occurs slowly is called slow speed reaction.

Question 21.
What do you mean by fast speed reaction?
OR
Define: Fast speed reaction.
Answer:
The reaction which is completed in short time i.e. occurs rapidly is called fast speed reaction.

Question 22.
Give two examples of slow speed reactions.
Answer:
(1) On heating potassium chlorate (KClO3) it decomposes slowly into potassium chloride and oxygen gas.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 37
This reaction requires long time for completion, therefore it is slow speed reaction.

(2) Rusting of iron is a slow speed reaction. In this reaction iron reacts with oxygen from air to form iron oxide.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 38

Question 23.
Give two examples of fast speed reactions.
Answer:
(1) The reaction between sodium hydroxide (NaOH) and hydrochloric acid (HCl) is a neutralization reaction and it is fast speed reaction.
NaOH2(aq) + HCl(aq) → NaCl(aq) + H2O(l)
This neutralizaton reaction is completed in short time, therefore it is fast speed reaction.

(2) Aqueous solution of sodium chloride reacts with silver nitrate solution to form white precipitate of silver chloride (NaCl) and sodium nitrate.
NaCl(aq) + AgNO3(aq) → NaNO3(aq) + AgCl ↓
This reaction is completed in short time, therefore it is fast reaction.

Question 24.
Write a short note on slow speed and fast speed reactions.
Answer:
Slow speed reaction:
The reaction which requires long time for completion i.e. occurs slowly is called slow speed reaction.
Examples:
(1) On heating potassium chlorate (KClO3) it decomposes slowly into potassium chloride and oxygen gas.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 39
This reaction requires long time for completion, therefore it is slow speed reaction.

(2) Rusting of iron is a slow speed reaction. In this reaction iron reacts with oxygen from air to form iron oxide.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 40
This reaction requires long time for completion.

Fast speed reaction:
The reaction which is completed in short time i.e., occurs rapidly is called fast speed reaction.
Examples:
(1) The reaction between sodium hydroxide (NaOH) and hydrochloric acid (HCl) is a neutralization reaction and it is fast speed reaction.
NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
This neutralizaton reaction is completed in short time, therefore it is fast speed reaction.

(2) Aqueous solution of sodium chloride reacts with silver nitrate solution to form white precipitate of silver chloride (NaCl) and sodium nitrate.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 41
This reaction is completed in short time, therefore it is fast reaction.

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 25.
State the factors which affect the speed (or rate) of a reaction.
Answer:
The factors which affect the rate of a reaction are

  1. Nature of the reactants.
  2. Size of the particles of the reactants.
  3. Concentration of the reactants.
  4. Temperature of the reaction.
  5. Catalyst.

Question 26.
How does the rate of reaction depend on the nature of the reactants? Illustrate with suitable example.
Answer:
(1) when the reactant combines with two or more other reactants then the rate of a chemical reaction depends on the nature of the reactants.

(2) Both Al and Zn reacts with dilute hydrochloric acid, H2 gas is liberated and water soluble salts of these metals are formed. However, aluminium metal reacts faster with dil. HCl as compared to zinc metal.

(3) Al is more reactive than Zn. Therefore, the rate of reaction of Al with hydrochloric acid is higher than that of Zn. Hence, the nature of the reactant affect the rate of a reaction.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 42

Question 27.
How does the rate of a reaction depend on the size of the particles of reactants?
Answer:
(1) In the reaction of dil. HCl and Shahabad tile, CO2 effervescence is formed slowly. On the other hand, C2 effervescence forms at faster speed with the powder of Shahabad tile.

(2) The above observation indicates that the rate of a reaction depends upon the size of the particles of the reactants taking part in the reaction. Smaller the size of the reactant particles taking part in a reaction faster will be the rate of reaètion.

Question 28.
How does the rate of a reaction depend upon the concentration of the reactants? Give suitable example.
Answer:
(1) A chemical reaction takes place due to collisions of the reactant molecules. Higher the concentrations of the reactants more will be the frequency of collisions and faster wifi be the rate of the reaction.

(2) In the reaction of dil. HCl and CaCO3, CaCO3 disappears slowly and CO2 also liberates slowly. On the other hand the reaction with concentrated HCl takes place rapidly and CaCO3 disappears fast.

(3) Concentrated acid reacts faster than dilute acid, that means the rate of a reaction is proportional to the concentration of reactants.

Slow reaction:
CaCO3 + dli.2HCl → CaCl2 + CO2 + H2O
Fast reaction:
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 43

Question 29.
How does the rate of a reaction depend upon the temperature of reactants? Give suitable example.
Answer:
(i) (1) When the temperature of the reactants is increased, the reactant molecules start moving with more velocity and their kinetic energy increases. As a result, the number collisions increases. Hence, the rate of chemical reaction increases.

(2) Lime stone on heating decomposes to give CO2, which turns 1ime water milky. On the other hand, the lime water does not turn milky before heating the lime stone: because of the zero rate of reaction. The above observation indicates that the rate of a reaction increases on increasing the temperature.

(ii) Solid CaCO3 does not decompose at room temperature when heated, it decomposes to give CaO and CO2 that means the rise in temperature increases the rate of reaction. CaCO3 room temperature No chemical reaction.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 44

Question 30.
How does the rate if a reaction depend upon the catalyst? Give suitable example.
Answer:
(1) The substance in whose presence the rate of a chemical reaction changes, without causing any chemical change to it is called a catalyst.

(2) On heating potassium chlorate (KClO3) decomposes into potassium chloride and oxygen slowly.
\(2 \mathrm{KClO}_{3} \stackrel{\Delta}{\longrightarrow} 2 \mathrm{KCl}+3 \mathrm{O}_{2}\)
The rate of the above reaction neither increases by reducing the particle size nor by increasing the reaction temperature. However in the presence of manganese dioxide, KClO3 decomposes at a comparatively lower temperature and oxygen is produced more briskly. No chemical change takes place in MnO2 in this reaction. It acts as catalyst.

Maharashtra Board Solutions

Question 31.
State the Importance of rate in a chemical reaction.
Answer:

  1. The use of strong acid and strong base in a chemical reaction increases the rate of reaction.
  2. In a chemical reaction, if the smaller size of the reactant particles, the concentrated solution, high temperature and use of catalyst increases the rate of chemical reaction.
  3. The rate of chemical reaction is important with respect to environment.
  4. If the rate of chemimal reaction is fast it is profitable for the chemical factories.
  5. The ozone layer in the earth’s atmosphere protects the life of earth from the ultraviolet radiation of the sun. The process of depletion or maintenance of this layer depends upon the rate of production or destruction of ozone molecules.

Question 32.
Define Oxidation reaction.
Answer:
Oxidation: The chemical reaction in which a reactant combines with oxygen or loses hydrogen to form the product is called oxidation reaction.

Question 33.
Give examples of oxidation.
Answer:
(1) when carbon burns in air, it forms carbon dioxide. In this reaction carbon accepts oxygen, therefore, this is an oxidation reaction.
C(s) + O2(g) → CO2(g)

(2) when sodium reacts with ethyl alcohol, sodium ethoxide and hydrogen gas is formed. In this reaction, hydrogen is removed from ethyl alcohol, therefore this is an oxidation reaction.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 45
(3) Acidified potassium dichromate: (K2Cr2O7/H2SO4) oxidises ethly alcohol to acetic acid.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 46

Question 34.
What do you mean by oxidant? Explain with suitable example.
Answer:
The chemical substances which bring about an oxidation reaction by making oxygen available are called oxidants or oxidizing agents.

  1. In the combustion of carbon, oxygen is an oxidant.
  2. In the oxidation of ethly alcohol, potassium dichromate is used as oxidant.

Maharashtra Board Solutions

Question 35.
Name the various oxidants. How nascent oxygen is liberated from these oxidants?
Answer:
K2Cr2O7/H2SO4, KMnO4/H2SO4 are the commonly used chemical oxidants. Hydrogen peroxide (H2O2) is used as a mild oxidant. Ozone (O3) is also a chemical oxidant. Nascent oxygen is generated by chemical oxidants and it is used for the oxidation reaction.
O3 → O2 + [O].
H2O2 → H2O + [O]
K2Cr2O7 + 4H2SO4 → K2SO4 + Cr2(SO4)3 + 4H2O + 3[O]
2KMnO4 + 3H2SO4 → K2SO4 + 2MnSO4 + 3H2O + 5[O]
Nascent oxygen is a state prior to the formation of the O2 molecule. It is the reactive form of oxygen and is represented by the symbol as [O]

Question 36.
Acidified potassium permanganate (KMnO4) is a chemical oxidant and explain, how acidified potassium permanganate oxidise ferrous sulphate (FeSO4). Accordingly write a new definition of oxidation and reduction.
Answer:
Acidified KMnO4 oxidises ferrous sulphate (FeSO4) to ferric sulphate Fe2(SO4)3 and in addition to above K2SO4 and MnSO4 by-products are formed.
2KMnO4 + 10 FeSO4 → 8H2SO4 → K2SO4 + 2MnSO4 + 5Fe2(SO4)3 + 8H2O
2FeSO4 → Fe2(SO4)3
Ionic reaction :
2Fe2 + 2SO42+ → 2Fe3+ + 3SO22-
Net Ionic equation Fe2+ → Fe3+ + e
When ferric ion is formed from ferrous ion the positive change is increased by one unit. While this happens the rerrous ion loses one electron.

When metal or its ion loses electron, it is called an oxidation and gain of electron is called reduction.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 47

Question 37.
Define reduction reaction.
Answer:
The chemical reaction in which a reactant gains hydrogen and loses oxygen to form the product is called the reduction reaction.

Question 38.
Give two examples of reduction.
Answer:
(1) When hydrogen gas is passed over black copper oxide a reddish coloured layer of copper is formed.
In this reaction an oxygen atom removed from CuO to form copper, hence, this is reduction.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 48

(2) When hydrogen gas is passed over red hot coke, methane is obtained.
Here, hydrogen is added to coke (carbon). Hence, this is reduction.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 49

Question 39.
What do you mean by reductant? Explain with suitable example.
Answer:
The chemical substances which bring about reduction by making hydrogen available are called reductant. In the preparation of methane from carbon, hydrogen is a reductant.

Question 40.
What are redox reactions? Identify the substances that are oxidised and the substances that are reduced in the following reactions:
(1) 2H2S2(g) + SO2(g) → 3S(s) + 2H2O(l)
(2) CuO(s) + H2(g) → CU(s) + H2O(l)
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 50
Answer:
When oxidation and reduction take place simultaneously in a given chemical reaction, it is known as a redox reaction.
(1)
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 51
H2S is oxidised and SO2 is reduced.

(2)
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 52
CuO is reduced and H2 is oxidised.

(3)
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 53
(1) Oxidation: H2S, H2O and HCl.
(2) Reduction: SO2, CuO and MnO2

Question 41.
Observe the following reaction and answer the questions given below:
BaSO4 + 4C → BaS + 4CO
(1) what type of reaction is it? Justify.
(2) Give one more example.
Answer:
(1) This is a redox reaction. In this reaction the reduction of BaSO4 and oxidation of carbon take place simultaneously.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 54

(2) Example
CuO+H2 → Cu + H2O
2H2S + SO2 → 3S + 2H2O

Question 42.
What is corrosion?
Answer:
The slow process of decay or oxidation of metals due to various components of atmosphere is known as corrosion.
Iron rusts and a reddish coloured layer is collected on it. This is corrosion of iron.

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 43.
How does rusting of iron occur?
Answer:
Iron when exposed to moist air forms a reddish layer of hydrated ferric oxide.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 55

Question 44.
How can corrosion be prevented?
Answer:

  1. Corrosion damages buildings, bridges, automobiles, ships, iron railings and other articles made of iron.
  2. It can be prevented by using an anti-rust solution, coating the surface by a paint, processes like galvanising and electroplating with other metals.

Question 45.
What is corrosion? Do gold ornaments corrode? Justify.
Answer:
The slow process of decay or oxidation or metal due to the effect of air, moisture and acids on
it is known as corrosion.
(1) Gold is a noble metal. There is no effect or moist air or action of acid on it at any temperature.
(2) Pure gold is a very soft metal. it breaks and gets bent easily. Hence, in gold ornaments, gold is alloyed with other metals 1ike copper or silver in appropriate proportion to make it hard and resistant to corrosion. Hence gold ornaments do not get corroded.

Question 46.
Complete the process of iron rusting by filling the blanks. Suggest a way to prohibit the process.
The iron rust is formed due to reaction. Different regions on iron surface become anode and cathode.
Reaction on anode region:
Fe(s) → Fe2+ (aq) + 2e
Reaction on cathode region:
O2(g) + 4H+ (aq) +………→ 2H2O(l)
when Fe2+ ions migrate from anode region they react with……..to fomm Fe3+ ions.
A reddish coloured hytirated oxide is formed from……….ions. It is called rust.
2Fe3+ (aq) + 4H2O(l) → +………+ 6H+ (aq)
A way to prevent rusting………..
(Practice Activity Sheer – 2)
Answer:
The iron rust is formed due to electrochemical reaction. Different regions on iron surface become unode and cathode.
Reaction on anode region:
Fe(s) → Fe2+ (aq) + 2e
Reaction on cathode region:
O2(g) + 4H+ (aq) + 4e → 2H2O(l)
when Fe2+ ions migrate from anode region they react with water to form Fe3+ ions.
A reddish coloured hydrated oxide is formed from Fe3+ ions. It is called rust.
2Fe3+ (aq) + 4H2O(l) → + Fe2O3. H2O(s) + 6H+(aq)
A way to prevent rusting by colouring with acrylic paints, Zn plating, galvanizing, anodizing, alloying, etc.

Question 17.
Deifne: Rancidity.
Answer:
When oil or fat or left over cooking oil for making food stuff undergoes oxidation ir stored for a long time and it is found to have foul odour called rancidity.

Distinguish between the following:

Question 1.
Combination reaction and Decomposition reaction.

Combination reactionDecomposition reaction
1. In a combination re­action, two or more reactants take part in the chemical reaction.1. In a decomposition reaction there is only one reactant in the chemical reaction.
1. In the combination reaction, only one product is formed.2. In a decomposition reaction, two or more products are formed.

Question 2.
Oxidation and reduction
Answer:

OxidationReduction
1. The chemical reaction in which reactants gain oxygen or lose hydrogen is called oxidation.1. The chemical reaction in which reactants gain hydrogen or lose oxygen is called reduction.
2. A reducing agent undergoes oxidation.2. An oxidising agent undergoes reduction.

Question 3.
Exothermic and Endothermic reaction.
Answer:

Exothermic reactionEndothermic reaction
1. The reaction in which heat is evolved is called an exothermic reaction.1. The reaction in which heat is absorbed is called an endothermic reaction.
2. The evolution of heat leads to a rise in the temperature of the solution.2. The absorption of heat leads to a fall in the temperature of the solution.

Give scientific reasons:

Question 1.
Grills of doors and windows are always painted before they are used.
Answer:

  • Grills of doors and windows are made from iron. Iron has a tendency to undergo corrosion.
  • Paint does not allow air or moisture to come in contact with iron surface.
    Therefore, to prevent rusting of iron. grills of doors and windows are always painted before they are used.

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 2.
Physical states of reactants and products are mentioned while writing a chemical equation.
Answer:
(1) while writing a chemical equation, gaseous, 1iquid and solid states are symbolised as (g), (l) and (s) respectively.

(2) This is done to make it more informative and to emphasise that those reactions occur in that manner only under those conditions. Hence, physical states of reactants and products are mentioned while writing a chemical equation.

Question 3.
Iron articles rust readily whereas steel which is also mainly made of iron does not undergo corrosion.
Answer:
(1) Iron articles rust readily as iron reacts with oxygen and moisture of air to convert into its hydroxide and oxide (Fe2O3. x H2O), while steel is an alloy of iron, carbon and chromium.

(2) The properties of an alloy are different from the properties of its constituents. The added metals increase its resistance to corrosion. It is more durable and clean.

Question 4.
Concentrated hydrochloric acid reacts more vigorously with calcium carbonate than dilute hydrochloric acid.
Answer:

  1. The rate of a reaction increases with the concentration of the reactant.
  2. As concentrated hydrochloric acid contains more number of HCl molecules than those in an equal volume of dilute HCl, concentrated HCl reacts more vigorously with calcium carbonate.

Question 5.
Zinc powder reacts much faster with dil. H2SO4 than does granulated zinc of the Same mass.
Answer:
(1) In a reaction. the rate of the reaction depends upon the particle size of the solid reactant as the reaction takes place on the surface only. Smaller the particles are, the more will be their total surface area and faster will be the rate of the reaction.
(2) Hence, zinc powder reacts much faster with dil. H2SO4 than does granulated zinc.

Question 6.
When copper articles exposed to air for a long time, gets corroded.
Answer:
Copper oxidises to form black coloured laver of copper oxide. when copper oxide combines with carbon dioxide from air, copper loses its lustre due to formation of greenish layer of copper carbonate on its surface. Thus, copper articles exposed to air for a long time get corroded.

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 7.
When silver vessels exposed to air turns blackish after sometime.
Answer:
On exposure to air, silver vessels turns blackish after sometime. This is because of the layer of silver sulphide (Ag2S) formed by the reaction or silver with hydrogen suphide in air.

Explain the following reactions giving their balanced chemical equations:

Question 1.
Calcium carbonate (Lime stone) is heated.
Answer:
When calcium carbonate (Lime stone) is heated at high temperature it decomposes to form quicklime and carbon dioxide gas.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 56

Question 2.
Copper reacts with dil. nitric acid.
Answer:
When copper reacts with dil. nitric acid, nitric oxide gas is formed.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 57

Question 3.
Copper reacts with conc. nitric acid.
Answer:
When copper reacts with conc. nitric acid, reddish coloured poisonous nitrogen dioxide gas is formed.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 58

Question 4.
Ammonia gas reacts with hydrogen chloride gas.
Answer:
When ammonia gas reacts with hydrogen chloride gas, it forms the salt ammonium chloride in gaseous state, but immediately it got transformed into the solid state.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 59

Question 5.
Magnesium strip is burnt in air.
Answer:
When magnesium strip is burnt in air, a white powder of magnesium oxide is formed.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 60

Question 6.
Calcium oxide is mixed with water.
Answer:
When calcium oxide (slaked lime) is mixed with water, calcium hydroxide is formed with evolution of large amount of heat.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 61

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 7.
Sugar is heated.
Answer:
When sugar is heated, it decomposes to form carbon (black substance).
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 62

Question 8.
Electric current is passed through acidulated water.
Answer:
When an electric current is passed through acidulated water, it decomposes into hydrogen and
oxygen gas.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 63

Question 9.
Zinc powder is added to copper sulphate solution.
Answer:
When zinc powder is added to copper sulphate solution, more reactive zinc displaces less reactive copper from copper sulphate solution. The colourless zinc sulphate is formed with evolution of heat.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 64

Question 10.
Iron powder is added to copper sulphate solution.
Answer:
When iron powder is added to copper sulphate solution, more reactive iron displaces less reactive copper from copper sulphate. The colourless ferrous sulphate solution is formed with evolution of heat.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 65

Question 11.
Lead is added to copper sulphate solution.
Answer:
When lead is added to copper sulphate solution, more reactive lead displaces less reactive copper from copper sulphate. The colourless lead sulphate solution is formed with evolution of heat.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 66

Question 12.
Potassium chromate solution is added to barium sulphate solution.
Answer:
When potassium chromate solution is added to barium sulphate solution, yellow precipitate of barium chromate is formed.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 67

Question 13.
Calcium chloride solution is added to sodium carbonate solution.
Answer:
When calcium chloride solution is added to sodium carbonate solution, white precipitate of calcium carbonate is formed.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 68

Question 14.
Sodium chloride solution is mixed with silver nitrate solution.
Answer:
When sodium chloride solution is mixed with silver nitrate solution, white precipitate or silver chloride is formed.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 69

Question 15.
Dilute sulphuric acid is added to barium chloride solution.
Answer:
When dilute sulphuric acid is added to barium chloride solution, white precipitate of barium sulphate is rormed.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 70

Question 16.
Calcium carbonate (Lime stone) is treated with dil. hydrochloric acid.
Answer:
When calcium carbonate (lime stone) is treated with dil. hydrochloric acid, carbon dioxide gas is formed.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 71

Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations

Question 17.
Aluminium is treated with dil. hydrochloric acid.
Answer:
When aluminium is treated with dilute hydrochloric acid, hydrogen gas is liberated.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 72

Question 18.
Magnesium is treated with hydrochloric acid.
Answer:
When magnesium is treated with hydrochloric acid, hydrogen gas is liberated.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 73

Question 19.
Hydrogen peroxide is decomposed in the presence of manganese dioxide (MnO2).
Answer:
When hvdrogen peroxide is decomposed in the presence of manganese dioxide (MnO2), water and oxygen are formed.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 74

Question 20.
Ethyl alcohol is treated with acidified potassium dlchromate.
Answer:
When ethly alcohol is treated with acidified potassium dichromate, acetic acid is formed. This is oxidation reaction.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 75

Question 21.
Hydrogen gas is passed over black copper oxide.
Answer:
When hydrogen gas is passed over black copper oxide, a reddish coloured layer of copper is formed.
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 3 Chemical Reactions and Equations 76

Maharashtra State Board Class 10 Science Solutions 

Animal Classification Class 10 Questions And Answers Maharashtra Board

Std 10 Science Part 2 Chapter 6 Animal Classification Question Answer Maharashtra Board

Balbharti Maharashtra State Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification Notes, Textbook Exercise Important Questions and Answers.

Class 10 Science Part 2 Chapter 6 Animal Classification Question Answer Maharashtra Board

Question 1.
a. I am diploblastic and acoelomate. Which phylum do I belong to ?
Answer:
I am from phylum Cnidaria or Coelenterata.

b. My body is radially symmetrical. Water vascular system is present in my body. I am referred as fish though I am not. What is my name?
Answer:
Starfish. I am from Echinodermata phylum.

c. I live in your small intestine. Pseudocoelom is present in my thread like body. In which phylum will you include me?
Answer:
I am Ascaris. I am included in Aschelminthes.

d. Though I am multicellular, there are no tissues in my body. What is the name of my phylum?
Answer:
Sponge, Porifera.

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Question 2.
Write the characters of each of the following animals with the help of classification chart:
a. Bath sponge.
Answer:
Classification:
Kingdom: Animalia
Sub-kingdom: Non-chordata
Phylum: Porifera
Characters:

  • Multicellular organisms without cell wall
  • Cellular grade organization.
  • Asymmetrical body
  • Acoelomate

Bath sponge is a marine animal. Blackish in colour and round in shape having porous body. It has spongin fibres and spicules which serve as skeleton. Bath sponges have good water-holding capacity. It is sedentary animal which is fixed to some substratum in the aquatic environment. Reproduction is by budding. It also has a good regeneration capacity.

b. Grasshopper.
Answer:
Classification:
Kingdom: Animalia
Sub-kingdom: Non-chordata
Phylum: Arthropoda
Class: Insecta
Characters:

  • Multicellular organisms without cell wall
  • Organ-system grade organization
  • Bilaterally symmetrical
  • Triploblastic and Eucoelomate.

Grasshopper is an insect included under class insecta of phylum arthropoda because it has jointed appendages. There are three pairs of legs and two pairs of wings. It is a terrestrial insect which is well adapted to the surrounding environment by showing camouflage. It has chitinous exoskeleton. The respiration by tracheae.

c. Rohu.
Answer:
Classification:
Kingdom: Animalia
Phylum: Chordata
Class: Pisces
Subclass: Teleostei (Bony fish)
Characters:

  • Multicellular organisms without cell wall
  • Organ-system grade organization
  • Bilaterally symmetrical
  • Triploblastic and Eucoelomate.

Rohu is a fresh water bony fish. It is a chordate having a vertebral column, hence included under subphylum vertebrata. The body is well adapted for aquatic mode of life. The shape of the body is streamlined. The exoskeleton is of scales. The gills Eire present which are used for respiration. The endoskeleton is of bones, hence called bony fish. There are paired fins and a impaired caudal fin which is used in steering and changing the direction during swimming.

d. Penguin.
Answer:
Classification:
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Characters:

  • Multicellular organisms without cell wall
  • Organ-system grade organization
  • Bilaterally symmetrical
  • Triploblastic and Eucoelomate.

Penguin is a flightless bird inhabitant of cold snow-clad regions. It has exoskeleton of feathers. The body is well adapted to survive in cold regions.

It is a warm-blooded bird. The forelimbs are modified into wings. But due. to excessive body weight, the penguins are not seen flying. It can wade in the water with modified hind limbs.

e. Frog.
Answer:
Classification:
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Characters:

  • Multicellular organisms without cell wall
  • Organ-system grade organization
  • Bilaterally symmetrical
  • Triploblastic and Eucoelomate.

The frog is a true amphibian that can live in water as well as on land. When on land it respires with the help of lungs while in water it uses its skin for breathing. It does not have exoskeleton. The skin is soft, slimy and moist. It is suitably coloured and hence the frog can camouflage in the surroundings. Body is divisible into head and trunk. Two pairs of limbs are seen. The forelimbs are short and used for support during locomotion. The hind limbs are long and strong, used for jumping when on land and for swimming when in water.

The eyes are large and protruding. Since the neck is absent, such eyes help in looking around. The tympanum is present.

f. Lizard.
Answer:
Classification:
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Characters:

  • Multicellular organisms without cell wall
  • Organ-system grade organization
  • Bilaterally symmetrical
  • Triploblastic and Eucoelomate.

The lizard is a cold-blooded reptile. The limbs are weak and do not support the body weight, hence lizard is seen creeping. But the feet are provided with pads and suckers due to which lizards are well- adapted to climb on the vertical walls. The exoskeleton has fine scales. The body is divisible into head, neck and trunk. The capacity to regenerate is developed in lizards, hence it can produce the lost tail or limbs. The mode of reproduction is egg laying. It feeds on insects with the help of long and sticky tongue.

g. Elephant.
f. Lizard.
Answer:
Classification:
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Characters:

  • Multicellular organisms without cell wall
  • Organ-system grade organization
  • Bilaterally symmetrical
  • Triploblastic and Eucoelomate.

Elephant is the terrestrial, herbivorous mammal adapted to survive in hot and humid tropical forests.
It is a mammal and hence shows viviparity and milk secretion. The body is divisible into head, neck, trunk, and tail. The proboscis is a characteristic feature of the elephant which is actually modified nose.

h. Jellyfish.
Answer:
Classification:
Kingdom: Animalia
Sub-kingdom: Non-chordata
Phylum: Cnidaria or Coelenterata
Characters:

  • Multicellular organisms without cell wall
  • Tissue grade organization
  • Radially symmetrical
  • Diploplastic and Acoelomate

Jellyfish or Aurelia is a coelenterate. Its body is medusa. It appears as a transparent balloon seen floating in the marine waters. Since it has appearance like a jelly, it is known commonly as jellyfish. There are tentacles provided with cnidoblasts or stinging cells. Tentacles are used for catching the prey. Cnidoblasts are used to secrete a toxin which paralyses the prey.

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Question 3.
Write in brief about progressive changes in animal classification.
Answer:
There were different methods of classification of animals.

  1. The first classification method was given by the Greek philosopher Aristotle. He took into account the criteria like body size, habits and habitats of the animals. This method was called artificial method of classification.
  2. The same artificial method was used by other scientists such as Theophrastus, Pliny, John Ray, Linnaeus, etc.
  3. Further due to advances in science the references were changed and there were some new methods of classification proposed.
  4. The system of classification called ‘Natural system of classification’ was then proposed. This system of classification was based on criteria such as body organization, types of cells, chromosomes, bio-chemical properties, etc.
  5. Later, Dobzhansky and Meyer gave the system of classification based on evolution.
  6. In 1977, Carl Woese has also proposed the three domain system of animal classification.

Question 4.
What is the exact difference between grades of organization and symmetry? Explain with examples.
Answer:
I. Grades of organization:
(1) The grades of organization mean the way an organism has different body formation.
(2) Unicellular organisms like amoeba have a single cell in the body and hence the organization in its body is called protoplasmic grade of organization.
(3) Some organisms have only cells in their body which is called cellular grade of organization, e.g. Poriferans.
(4) Some have tissues e.g. Coelenterates. They are said to have tissue grade organization. Some have organs, they are said to have organization-organ grade, e.g. Platyhelminthes. All other higher animals have organ-system grade organization.

II. Symmetry:
(1) Symmetry on the other hand shows the base of the body formation.
(2) The symmetry can be understood by taking an imaginary cut through the animal body.
(3) Based on the symmetry there can be three types.
(4) In asymmetric animals, there is no symmetry in any plane, e.g. Amoeba.
(5) The bilateral symmetry is the one in which an imaginary axis can pass through only one median plane to divide the body into two equal halves. Most of the animals have bilateral symmetry and hence their organs are arranged in symmetric way on both the sides.
(6) The imaginary cut passing through the central axis but any plane of body aan -give more than one equal half. The organs of such animals are arranged in a radius of an imaginary circle, e.g. Cnidarians and some echinoderms.
Both grades of organization and symmetry are the bases for classifying animals into different phyla.

Question 5.
Answer in brief.
a. Give scientific classification of shark upto class.
Answer:
Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Pisces
Subclass: Elasmobranchii (Cartilaginous)
Example: Scientific name: Scoliodon sorrakowah.
Common name: Shark

b. Write four distinguishing characters of phylum – Echinodermata.
Answer:
Distinguishing characters of Echinodermata:

  1. Marine organisms with skeleton made up of calcareous spines. Calcareous material on the body hence the name is Echiodermata. Some are sedentary while some are free swimming.
  2. Body is triploblastic, eucoelomate and radially symmetrical when adult. The larvae are bilateral symmetrical.
  3. Locomotion with the help of tube-feet which are also used for capturing the prey.
  4. Echinoderms have regeneration capability. Hence they can restore their lost parts.
  5. Most of them are unisexual.
  6. Examples; Starfish, sea-urchin, brittle star, sea cucumber, etc.

c. Distinguish between butterfly and bat with the help of four distinguish properties.
Answer:
Butterfly:

  1. Butterfly is classified as Non-chordate.
  2. It is included in class Insecta of phylum Arthropoda.
  3. Butterfly has three pairs of legs and two pairs of chitinous wings.
  4. Butterfly is a diurnal (active during day) insect.
  5. Butterfly lays eggs which hatch into larva. Larva develops into pupa and pupa metamorphoses into an adult.

Bat:

  1. Bat is classified as a Chordate.
  2. It is included in class Mammalia of subphylum Vertebrata.
  3. Bat has one pair of legs and a pair of patagium which are used for flying. Patagium has bones.
  4. Bat is a nocturnal (active at night) mammal.
  5. Bat is a viviparous animal that gives birth to live young ones. Young ones are fed by milk secreted by mammary glands.

d. To which phylum does Cockroach belong? Justify your answer with scientific reasons.
Answer:
(1) Cockroach belongs to the phylum Arthropoda and class Insecta.
(2) Scientific reasons for placement of Cockroach in the phylum Arthropoda:

  • The body is covered by chitinous exoskeleton.
  • Jointed appendages present, three pairs of walking legs and two pairs of membranous wings.
  • Body is eucoelomate, triploblastic, bilaterally segmented and segmented.
  • Respiration by spiracles and tracheal tubes.

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Question 6.
Give scientific reasons.
a. Though tortoise lives on land as well as in water, it cannot be included in class-Amphibia.
Answer:

  • When tortoise lives on the land, it respires with the help of lungs.
  • When in water, it puts out its nares (nasal openings) out of the water and breathes air.
  • It cannot take up oxygen dissolved in water. In both the habitats it respires with the help of lungs. In case of true amphibians, this is not the case.
  • They can breathe in water with the help of skin and on land with the help of lungs.
  • Tortoise also has exo-skeleton which is lacking in Amphibia. Therefore, tortoise cannot be included in class Amphibia.

b. Our body irritates if it comes in contact with jellyfish.
Answer:

  • Jellyfish is a coelenterate that has cnidoblasts bearing tentacles.
  • These cnidoblasts inject toxins to paralyse the prey at the time of feeding.
  • When jellyfish comes in contact with our body, this toxin is released causing reaction to our skin.
  • Therefore, our body gets irritation when we come in contact with jellyfish.

c. All vertebrates are chordates but all chordates are not vertebrates.
Answer:

  • All chordates possess notochord in some period of their development.
  • All vertebrates also have notochord during embryonic life, which is later replaced by vertebral column.
  • Therefore all vertebrates are chordates.
  • But some chrodate’s like Urochordata and cephalochordata do not possess vertebral column and hence they are not vertebrates.

d. Balanoglossus is connecting link between non-chordates and chordates.
Answer:

  • Balanoglossus shows some characters of non-chordates.
  • It also has notochord as in case of chordates.
  • Since it shares the characters of non-chordates and chordates, from the view point of evolution, it is called connecting link between them.

e. Body temperature of reptiles is not constant. (Board’s Model Activity Sheet)
Answer:

  1. Reptiles are cold-blooded animals.
  2. The thermoregulatory system is not there in their bodies.
  3. Their body temperatures, fluctuate as per the environmental temperatures.
  4. Therefore, the body temperature is not maintained at constant level in reptiles.

Question 7.
Answer the following questions by choosing correct option.
a. Which special cells are present in the body of sponges (Porifera)?
1. Collar cells
2. Cnidoblasts
3. Germ cells
4. Ectodermal cells
Answer:
1. Collar cells
Explanation: Porifera animals are attached to the substratum. They do not show locomotion. For gathering and catching the food, they need to produce a current in the water. For this purpose, they have characteristic collar cells in their body. Germ cells and ectodermal cells are seen in all other phyla. Cnidoblasts are characteristic feature of coelenterates.

b. Which of the following animals’ body shows bilateral symmetry?
1. Starfish
2. Jellyfish
3. Earthworm
4. Sponge
Answer:
3. Earthworm
Explanation: When an imaginary plane passing through only one axis can divide the body into two equal halves, then it is called bilateral symmetry. Such symmetry is shown only by earthworm. Sponge body is asymmetrical while starfish and jellyfish are radially symmetrical.

c. Which of the following animals can regenerate it’s broken body part?
1. Cockroach
2. Frog
3. Sparrow
4. Starfish
Answer:
4. Starfish
Explanation: Cockroach, sparrow and frog cannot perform regeneration. Only echinoderms show power of regeneration. So only starfish can regenerate its broken part.

d. Bat is included in which class?
1. Amphibia
2. Reptilia
3. Aves
4. Mammalia
Answer:
4. Mammalia
Explanation: Bat gives birth to young ones and they also possess mammary glands. Amphibia, Reptilia and Aves do not show such features. Therefore, bat is included in Mammalia.

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Question 8.

Body cavityGerm LayerPhylum
Absent_____________Porifera
AbsentTriploblastic_____________
Pseudocoelom_____________Aschelminthes
Present_____________Arthropoda

Answer:

Body cavityGerm LayerPhylum
AbsentDiploblasticPorifera
AbsentTriploblasticPlatyhelminthes
PseudocoelomTriploblasticAschelminthes
PresentTriploblasticArthropoda

Question 9.

TypeCharacterExamples
Cyclostomata…………………………
……………Gill respiration……………
Amphibia…………………………
…………………………Whale, Cat, Man
……………Poikilotherms……………

Answer:

TypeCharacterExamples
CyclostomataJawless mouth with suckersPetromyzon, Myxine
PiscesGill respirationPomfret, Sea horse, Shark
AmphibiaMoist skin without exoskeletonFrog, Toad, Salamander
MammaliaMammary glandsWhale, Cat, Man
ReptiliaPoikilothermsTortoise, Lizard, Snake

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Question 10.
Sketch, labell and classify.
1. Hydra.
Answer:
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 1
Classification:
Kingdom: Animalia
Division: Non-chordata
Phylum: Coelenterata
Example: Hydra

2. Jellyfish
Answer:
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 2
Classification:
Kingdom: Animalia
Division: Non-chordata
Phylum: Coelenterata
Example: Jellyfish

3. Planaria
Answer:
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 3
Classification:
Kingdom: Animalia
Division: Non-chordata
Phylum: Platyhelminthes
Example: Planaria

4. Roundworm
Answer:
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 4
Classification:
Kingdom: Animalia
Division: Non-Chordata
Phylum: Aschelminthes
Example: Ascaris (Roundworm)

5. Butterfly
Answer:
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 5
Classification:
Kingdom: Animalia
Division: Non-chordata
Phylum: Arthopoda
Class: Insecta
Example: Butterfly

6. Earthworm
Answer:
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 6
Classification:
Kingdom: Animalia
Division: Non-chordata
Phylum: Annelida
Example: Earthworm

7. Octopus
Answer:
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 7
Classification:
Kingdom: Animalia
Division: Non-chordata
Phylum: Mollusca
Example: Octopus

8. star fish
Answer:
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 8
Classification:
Kingdom: Animalia
Division: Non-chordata
Phylum: Echinodermata
Example: Star fish

9. Shark
Answer:
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 9
Classification:
Kingdom: Animalia
Phylum: Chordata
Sub Phylum: Vertebrata
Class: Pisces
Example: Scoliodon (Shark)

10. Frog
Answer:
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 10
Classification:
Kingdom: Animalia
Phylum: Chordata
Sub Phylum: Vertebrata
Class: Amphibia
Example: Frog

11. Wall Lizard
Answer:
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 11
Classification:
Kingdom: Animalia
Phylum: Chordata
Sub Phylum: Vertebrata
Class: Reptilia
Example: Wall Lizard

12. Pigeon.
Answer:
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 16
Classification:
Kingdom: Animalia
Phylum: Chordata
Sub-Phylum: Vertebrata
Class: Aves
Example: Pigeon

Question 11.
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 12
Answer:
(1) Jellyfish
(2) Nereis
(3) Flatworm/Planaria
(4) Bony fish.

Project: (Do it your self)

1. In each week, on a specific day of your convenience, observe the animals present around your school and residence. Perform this activity for six months. Keep date-wise record of your observations. After the observation period of six months, analyse your observations with respect to seasons. With the help of your teacher, classify the reported animals.

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Can you recall? (Text Book Page No. 61)

Question 1.
Which criteria are used for classification of organisms?
Answer:
The living organisms are classified according to their basic characteristics, such as presence or absence of nucleus, unicellular body or multicellular body, presence or absence of cell wall and the mode of nutrition in them.

Question 2.
How are the plants classified?
Answer:
The plants are classified according to the following basis:

  1. Presence or absence of the organs.
  2. Presence or absence of separate

Use your brain power: (Text Book Page No. 74)

(A) Animals like gharial and crocodile live in water as well as on land. Are they amphibians or reptiles?
Answer:
Ghariyal and crocodile are reptiles. They can swim in water and crawl on land. But they can respire only with the help of lungs. Their breathing is through nostrils. Even when in water, they have to inhale and exhale by coming up to the surface of water for air. Amphibians can breathe through the skin when in water and by lungs when on land. They also have hard exoskeleton which amphibians do not have. Hence, ghariyal and crocodile are not amphibians, but they are reptiles.

(B) Animals like whale, walrus live in water (ocean). Are they included in Pisces or Mammalia?
Answer:
Whale and walrus are aquatic and marine mammals. They do not belong to class Pisces. They do not have gills to breathe in dissolved oxygen in water. Neither they have scales on the body nor can they lay eggs. Whales and walrus have mammary glands like all other mammals. They give birth to live young one. They breathe only with the help of lungs by putting their nostrils out of the water at surface. Hence they are included in Mammalia.

Choose the correct alternative and write its alphabet against the sub-question number:

Question 1.
System of classification based on evolution was brought into practice by ……….. and …………
(a) Darwin, Mendel
(b) Lamarck, De Vries
(c) Morgan, Mayor
(d) Dobzansky, Meyer
Answer:
(d) Dobzansky, Meyer

Question 2.
Artificial method of animal classification was proposed by ………….
(a) Aristotle
(b) Darwin
(c) Lamarck
(d) Whittaker
Answer:
(a) Aristotle

Question 3.
Animals attached to substratum are called ……….. animals.
(a) sessile
(b) sedentary
(c) lame
(d) motionless
Answer:
(b) sedentary

Question 4.
In coelenterates, ………… are useful for capturing the prey whereas ………. inject the toxin in the body of prey.
(a) tentacles, cnidoblast
(b) hands, legs
(c) flagella, sting
(d) cilia, sting cells
Answer:
(a) tentacles, cnidoblast

Question 5.
Body of annelidan animals is long, cylindrical and …………. segmented.
(a) annular
(b) metamerically
(c) jointed
(d) cuticular
Answer:
(b) metamerically

Question 6.
…………. is second largest phylum in animal kingdom.
(a) Mollusca
(b) Arthropoda
(c) Porifera
(d) Platyhelminthes
Answer:
(a) Mollusca

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Question 7.
Endoskeleton of Cyclostomata animals is …………..
(a) bony
(b) bony and cartilaginous
(c) cartilaginous
(d) none of the above
Answer:
(c) cartilaginous

Question 8.
Body cavity between the body and internal organs is called ………….
(a) gastrocoel
(b) enteron
(c) coelom
(d) cave
Answer:
(c) coelom

Question 9.
Larvae of ……….. metamorphose into adults after settling down at bottom of the sea.
(a) Hemichdrdata
(b) Urochordata
(c) Cephalochordata
(d) Cyclostomata
Answer:
(b) Urochordata

Question 10.
The body organization of unicellular organisms is of …………. grade.
(a) cellular
(b) tissue
(c) protoplasmic
(d) organ
Answer:
(c) protoplasmic

Question 11.
………….. is a cold blooded animal. (March 2019)
(a) Bat
(b) Snake
(c) Rabbit
(d) Elephant
Answer:
(b) Snake

Question 12.
Calcareous spines are present on the body of ………… animal. (July 2019)
(a) fish
(b) snail
(c) sponge
(d) starfish
Answer:
(d) starfish

Question 13.
Due to which similar characteristic honey bee and cockroach are included in the same phylum?
(a) Wings
(b) Three pair of legs
(c) Jointed appendages
(d) Antenna
Answer:
(c) Jointed appendages

Write whether the following statements are true or false with proper explanation:

Question 1.
Greek philosopher Linnaeus was the first to perform the animal classification.
Answer:
False. (Greek philosopher Aristotle was the first to perform the animal classification.)

Question 2.
Heart if present in the non-chordates is on dorsal side of body.
Answer:
True.

Question 3.
Arthropoda animals bear numerous pores on their body.
Answer:
False. (Porifera animals bear numerous pores on their body.)

Question 4.
Porifera animals have special type of collar cells.
Answer:
True.

Question 5.
Aschelminthes have acoelomate and bilaterally symmetrical body.
Answer:
False. (Platyhelminthes have acoelomate and bilaterally symmetrical body. OR Aschelminthes have pseudocoelomate and bilaterally symmetrical body.

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Question 6.
Planet Earth has highest number of animals from phylum Arthropoda.
Answer:
True.

Question 7.
Animals belonging to phylum Annelida perform locomotion with the help of tube-feet.
Answer:
False. (Animals belonging to phylum Echinodermata perform locomotion with the help of tube-feet.)

Question 8.
Herdmania has notochord in only tail region and hence it is called Urochordate.
Answer:
True.

Question 9.
Mammals breathe with the help of lungs.
Answer:
True.

Question 10.
Amphibians are warm blooded.
Answer:
False. (Amphibians are cold-blooded. OR Mammals are warm blooded.)

Match the columns:

Question 1.

PhylumCharacteristics
(1) Mollusca(a) Collar cells
(2) Hemichordata(b) Mantle
(c) Trunk
(d) Cnidoblasts

Answer:
(1) Mollusca – Mantle
(2) Hemichordata – Trunk.

Question 2.

PhylumCharacteristics
(1) Porifera(a) Tunic
(2) Coelenterata(b) Collar cells
(c) Tentacles bearing cnidoblasts
(d) Mantle

Answer:
(1) Porifera – Collar cells
(2) Coelenterata – Tentacles bearing cnidoblasts.

Question 3.

Subphylum/ClassCharacteristics
(1) Cyclostomata(a) Collar cells
(2) Urochordat(b) Sucker
(c) Tunic
(d) Chitinous exoskeleton

Answer:
(1) Cyclostomata – Sucker
(2) Urochordata – Tunic.

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Find the odd one out:

Question 1.
Physalia, Hyalonema, Ruplectella, Spongilla
Answer:
Physalia. (Physalia belongs to Coelenterata, all the remaining are poriferans.)

Question 2.
Planaria, Liverfluke, Filarial worm, Tapeworm
Answer:
Filarial worm. (Filarial worm is Aschelminthes remaining are Platyhelminthes.)

Question 3.
Star fish, Sea-urchin, Nereis, Sea-cucumber
Answer:
Nereis. (Nereis belongs to Annelida all the remaining are Echinoderm animals.)

Question 4.
Cockroach, Butterfly, Spider, Honey bee
Answer:
Spider. (Spider is eight-legged Arachnid, remaining are insects.)

Question 5.
Amphioxus, Herdmania, Doliolum,Oikopleura
Answer:
Amphioxus. (Amphioxus is Cepholochordate all the remaining are Urochordates.)

Question 6.
Frog, Tortoise, Toad, Salamander
Answer:
Tortoise. (Tortoise is a reptile, the remaining are amphibians.)

Question 7.
Tube feet, Setae, Parapodia, Sucker
Answer:
Tube feet. (Tube feet are locomotory organs of Echinoderms, the remaining are locomotory organs of Annelids.)

Question 8.
Shark, Sting ray, Electric ray, Pomfret
Answer:
Pomfret. (Pomfret is a bony fish, all the remaining are cartilaginous fish.)

Find the correlation:

Question 1.
Annelida : Earthworm : : Platyhelminthes : …………
Answer:
Annelida : Earthworm : : Platyhelminthes : Planaria/Liverfluke

Question 2.
Horse : Mammal : : Seahorse : ………….
Answer:
Horse : Mammal : : Seahorse : Pisces

Question 3.
Parapodia : Annelida : : Tube feet : ………..
Answer:
Parapodia : Annelida : : Tube feet : Echinodermata

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Question 4.
Frog : Amphibia : : Turtle : …………..
Answer:
Frog : Amphibia : : Turtle : Reptilia

Question 5.
Proboscis : Hemichordata : : Suctorial mouth : …………
Answer:
Proboscis : Hemichordata : : Suctorial mouth : Cyclostomata

Question 6.
Bird from very cold regions : Penguin : : Aquatic Mammal from very cold regions : ………..
Answer:
Bird from very cold regions : Penguin : : Aquatic Mammal from very cold regions : Whale.

Distinguish between:

Question 1.
Non-chordates and Chordates.
Answer:
Non-chordates

  1. Non-chordates are less evolved animals and are on the lower levels of evolution.
  2. Non-chordates do not have notochord.
  3. In non-chordates, there are no pharyngeal gill slits.
  4. Nerve cord, if present is double and solid.
  5. Nerve cord is located on the ventral side of the body.
  6. Heart if present is on the dorsal side of the body.

Chordates:

  1. Chordates are more evolved animals and are on the higher levels of evolution.
  2. Chordates have notochord at least in some stage of development.
  3. In chordates, there are pharyngeal gill slits.
  4. Nerve cord is single and hollow.
  5. Nerve cord is located on the dorsal side of the body.
  6. Heart if present is on the ventral side of the body.

Question 2.
Phylum Platyhelminthes and Phylum Aschelminthes. OR Write any two points of differences between flat worms and round worms.
Answer:
Phylum Platyhelminthes (Flat worms):

  1. Platyhelminth worms have slender and flat leaf or strip like body hence called flat worms.
  2. Platyhelminthes are triploblastic and acoelomate.
  3. Most of them are hermaphrodite or bisexual having both male and female reproductive systems in the same body.
  4. Examples: Planaria, Liver fluke, Tapeworm, etc.

Phylum Aschelminthes (Round worms):

  1. Aschelminthes have long thread-like or Cylindrical body, hence called round worms.
  2. Aschelminthes are triploblastic and pseudocoelomate.
  3. They are unisexual with male and female sexes separate. There is sexual dimorphism.
  4. Examples: Ascaris (Intestinal worm), Filarial worm, Loa loa (Eye worm), etc.

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Question 3.
Urochordata and Cephalochordata.
Answer:
Urochordata:

  1. Urochordates have notochord in the tail region of the adult body.
  2. These animals look like small sacs.
  3. Usually urochordates are hermaphrodites.
  4. Body of urochordate is covered over by skin-like test or tunic.
  5. Examples: Herdmania, Doliolum, Oikopleura, etc.

Cephalochordata:

  1. Cephalochrodates have notochord in the entire length of the body.
  2. These animals look like small fish.
  3. Cephalochordates are unisexual.
  4. Body of cephalochordate is not covered in a test.
  5. Example: Amphioxus.

Question 4.
Cyclostomata and Pisces.
Answer:
Cyclostomata:

  1. Cyclostomata are the poorly evolved first class of vertebrate animals.
  2. Cyclostomata have circular jawless mouth with suckers.
  3. Paired appendages are absent in cyclostomates.
  4. Cyclostomes have soft skin which is without any scales.
  5. Endoskeleton is cartilaginous.
  6. Examples: Petromyzon, Myxine, etc.

Pisces:

  1. Pisces are the better evolved class of vertebrates which is well adapted for aquatic living.
  2. Pisces have mouth with upper and lower jaws. Teeth are present in the mouth.
  3. Paired and unpaired fins present in all kinds of fishes.
  4. Fishes have different types of scales on the body.
  5. Endoskeleton may be cartilaginous, or it may be bony.
  6. Examples: Shark (Scoliodoh), rays which are cartilaginous fishes and pomfret, makerel, sardines, rohu which are bony fishes.

Question 5.
Amphibia and Reptilia.
Answer:
Amphibia:

  1. Amphibians can inhabit both land and water. They can survive on both environments by breathing there.
  2. The exoskeleton is absent in amphibians. The skin is soft, slimy and moist.
  3. Body is divided into head and trunk. Neck is absent.
  4. The digits do not have claws.
  5. The respiration is by skin when in water and by lungs when on land. The larvae breathe by gills.
  6. There is external fertilization at the time of sexual reproduction.
  7. The developmental stages are eggs and tadpole. Metamorphosis is seen in amphibians.
  8. Examples : Frog, Toad, Salamander, etc.

Reptilia:

  1. Reptilians are terrestrial animals. Though turtle and sea snakes can stay in water, they cannot breathe in water.
  2. The exoskeleton in the form of scales. Some animals have plates or scutes (e.g. tortoise and crocodile).
  3. Body is divided into head, neck and trunk.
  4. The digits have claws.
  5. The respiration is only by lungs.
  6. There is internal fertilization at the time of sexual reproduction.
  7. The developmental stages are eggs and juvenile. Metamorphosis is not seen in reptiles.
  8. Examples : Tortoise, Lizard, Snake, etc.

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Question 6.
Aves and Mammalia.
Answer:
Aves:

  1. Aves are totally adapted for the aerial mode of life.
  2. Body is spindle shaped. Body is divisible into head, neck and trunk. There are two pairs of limbs. The forelimbs are modified to form wings for flight.
  3. Digits have scales and claws.
  4. The exoskeleton is in the form of feathers.
  5. Jaws are modified into a beak.
  6. Birds are oviparous. The eggs hatch into nestlings.
  7. The incubation of eggs and feeding of nestlings is done by both parents.
  8. Examples: Crow, Sparrow, Peacock, Parrot, Pigeon, Duck, Penguin, etc.

Mammalia:

  1. Mammals are adapted for terrestrial life.
  2. Body is not spindle shaped. It is divisible into head, neck, trunk and tail. There are two pairs of limbs. They are adapted for walking or running on the ground.
  3. Digits have nails or hoofs. Few have claws.
  4. The exoskeleton is in the form of fur, hair, wool, etc.
  5. Jaws have teeth and they surround the mouth.
  6. Mammals are viviparous. They give birth to live young ones. (Exception: Platypus)
  7. Parental care is shown only by mother, who feeds, the babies with milk from mammary glands.
  8. Examples: Cat, Dog, Tiger, Lion, Elephant, Human, Kangaroo, Dolphin, Bat, etc.

Classification-based questions:

Question 1.
Identify me:
(1) I am metamerically segmented, blood sucking, ectoparasite. I have suckers. Who am I and to what phylum do I belong to? (OR) Who am I? (July 2019)
I have suckers. I am blood sucking.
Answer:
Leech, Phylum Annelida.

(2) I have chitinous exoskeleton, I have four pairs of walking appendages. I can sting you. Who am I? What phylum do I belong to?
Answer:
Scorpion. Phylum Arthropoda.

Question 2.
Characters of a phylum are given below. Read them carefully and answer the questions:
(a) Spines of calcium carbonate are present on the body, (b) These animals are exclusively marine, (c) They perform the locomotion with the help of tube feet, (d) Their skeleton is made up of calcareous plates or spicules.
(i) Animals of which phylum show the above character?
Answer:
Animals belonging to phylum Echinodermata show the above characters.

(ii) Give an example from that phylum.
Answer:
Starfish, brittlestar, sea urchin.

(iii) These animals can be classified with the help of which criteria of new system of animals classification.
Answer:
Animals are classified on the basis of criteria such as body organization, body symmetry, body cavity, etc.

Question 3.
Identify my class/phylum and give one example of it: (March 2019)
(a) I have mammary glands and exoskeleton in the form of hair.
(b) We form the highest number of animals on the planet. We have bilateral symmetry and our exoskeleton is in the form of chitin.
(c) I live in your small intestine, my body is long and thread like and pseudocoelomate.
Answer:
(a) Class: Mammalia, Example: Cat, Dog, Man.
(b) Phylum: Arthropoda, Example: Prawn, Crab.
(c) Phylum: Aschelminthes, Example: Ascaris or round worm, Filarial worm.

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Question 4.
Tell me who am I? What is my class/ phylum?
1. My body is divided into proboscis, collar and trunk. I am marine animal.
Answer:
Balanoglossus; Phylum: Hemichordata.

2. I stay inside two shells. My body is divided into head, foot and visceral mass.
Answer:
Bivalve or Oyster; Phylum: Mollusca.

3. I am male as well as female. I am endoparasite having a coelomate and bilaterally symmetrical and flattened body.
Answer:
Liver fluke or tape worm; Phylum: Platyhelminthes.

4. I am sedentary marine animal drinking water all the time through numerous pores on the body.
Answer:
Sponge; Phylum: Porifera.

5. I am venomous, eight legged creature having chitinous exoskeleton.
Answer:
Scorpion; Phylum: Arthropoda.

6. My body is covered by tunic. As a larva I swim but as an adult I settle down.
Answer:
Doliolum or Salpa; Phylum: Chordata subphylum : Urochordata.

Question 5.
Identify the class of given animals and write one characteristic of each animal:
(1) Kangaroq (2) Penguin (3) Crocodile (4) Frog (5) Sea-horse. (July 2019)
Answer:
(1) Kangaroo: Class Mammalia. It is a marsupial animal with pouch for development of offspring. Long hind limbs for jumping.
(2) Penguin: Class Aves. It is flightless bird. Body covered with thick feathery coat. Oviparous mode.
(3) Crocodile: Class Reptilia. It is a large animal seen near water bodies. Can swim in water but cannot respire in water. Body covered with exoskeleton of scaly plates. Limbs very weak in comparison with huge bodies.
(4) Frog: Class Amphibia. Shows aquatic as well as terrestrial mode. Can breathe with lungs and skin. No exoskeleton and skin is slimy.
(5) Sea-horse: Class Pisces. Bony fish. Highly modified body structure showing brood pouch for development of offspring gills for respiration, fins for swimming.

Answer the following questions:

Question 1.
State any four benefits of animal classification. (March 2019)
Answer:

  1. Studying the different animals becomes easy when they are placed under different groups.
  2. When few representative animals of the particular group are studied then the idea about other animals belonging to that group also becomes clear.
  3. The animal evolution becomes easier to follow after studying classification.
  4. The identification of animals can be done accurately.
  5. Relationship of the different animals with each other and with other groups can be understood clearly.
  6. Habitat of each animal and its role in nature is understood by classification.
  7. Various adaptations are understood by learning classification.

Question 2.
Into which phyla is Non-chordata divided? In which three subphyla are Chordates divided?
Answer:
I. The phyla of Non-chordata:

  • Protozoa
  • Porifera
  • Coelenterata or Cnidaria
  • Platyhelminthes
  • Aschelminthes
  • Annelida
  • Arthropoda
  • Mollusca
  • Echinodermata
  • Hemichordata

II. The subphyla of Chordata:

  • Urochordata
  • Cephalochordata
  • Vertebrata

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Question 3.
Write the characteristics of chordates.
Answer:
Characteristics of Chordates:

  1. All chordates possess notochord and pharyngeal gill slits in at least during some developmental stage.
  2. Presence of single, tubular and dorsally located spinal cord and ventrally located heart.

Question 4.
Write the characteristics of vertebrates.
Answer:
Characteristics of vertebrates:

  • In vertebrates, notochord is replaced by vertebral column.
  • Development of head is complete.
  • Well-developed cranium which protects the brain.
  • Presence of endoskeleton which is either cartilaginous or bony.
  • Presence of jaws as in Gnathostomata or absence of jaws as in Agantha.

Write short notes on:

Question 1.
(1) Benefits of classification.
Answer:

  • Studying the different animals becomes easy when they are placed under different groups.
  • When few representative animals of the particular group are studied then the idea about other animals belonging to that group also becomes clear.
  • The animal evolution becomes easier to follow after studying classification.
  • The identification of animals can be done accurately.
  • Relationship of the different animals with each other and with other groups can be understood clearly.
  • Habitat of each animal and its role in nature is understood by classification.
  • Various adaptations are understood by learning classification.

Question 2.
Germinal layers.
Answer:

  • During the initial embryonic period of any multicellular animal there is formation of germinal layers or germ layer.
  • These germ layers give rise to new tissues in the developing animal.
  • The primitive animals were diploblastic i.e. they have only two germ layers called ectoderm and endoderm.
  • The higher animals are triploblastic, having three germ layers; ectoderm, mesoderm and endoderm.
  • Cnidarians are diploblastic while all other animals are triploblastic.

Question 3.
Coelom.
Answer:

  • Coelom means body cavity. It is situated between the body wall and the internal organs of the body.
  • The coelom is formed during early embryonic life in case of multicellular animals. It is formed from either mesoderm or gut.
  • Coelom when present in the body, those animals are called eucoelomate. Phylum Annelida onwards are eucoelomate animals. They are animals with true body cavity.
  • Those animals in which coelom are absent are called acoelomate animals. Porifera, Cnidaria and Platyhelminthes are acoelomate animals.
  • When coelom is not formed from mesoderm or gut, but formed from other tissues, it is called pseudocoelom. Only Aschelminthes animals have such coelom and hence they are called pseudocoelomate.

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Question 4.
Notochord.
Answer:

  • Notochord is an important feature of Chordates.
  • Notochord is supporting rod like structure.
  • This structure is present on the dorsal side of the animals.
  • It keeps the nervous tissue separated from the rest of the tissues.
  • In Hemichordates, the notochord is present in the proboscis.
  • In Urochordates, the notochord is present in the tail region of the free swimming larvae.
  • In Cephalochordates, the notochord lies throughout the length of the body.
  • In vertebrates, notochord is replaced by the vertebral column.

Complete the paragraph by choosing the appropriate words given in the brackets:

Question 1.
(Linnaeus, Dobzhansky, Carl Woese, Theophrastus, Artificial method, Aristotle, Natural system, Traditional system)
Time to time, different scientists have tried to classify the animals. Greek philosopher ………… was the first to perform the animal classification. Aristotle classified the animals, according to the criteria like body size, habits and habitats. Classification proposed by Aristotle is known as ………… Besides Aristotle, artificial method of classification was followed by ……….., Pliny, John Ray and ……….. Later on,’………… of classification’ was followed. Natural system of classification was based on various other criteria. By the time, system of classification based on evolution was also brought into practice. It was used by …………. and Meyer. Recently, ……….. has also proposed the animal classification.
Answer:
Time to time, different scientists have tried to classify the animals. Greek philosopher Aristotle was the first to perform the animal classification. Aristotle classified the animals, according to the criteria like body size, habits and habitats. Classification proposed by Aristotle is known as ‘Artificial method’. Besides Aristotle, artificial method of classification was followed by Theophrastus, Pliny, John Ray and Linnaeus. Later on, ‘Natural system of classification’ was followed. Natural system of classification was based on various other criteria. By the time, system of classification based on evolution was also brought into practice. It was used by Dobzansky and Meyer. Recently, Carl Woese has also proposed the animal classification.

Question 2.
(neck, lungs, skin, exoskeleton, amphibian, metamorphose, aquatic, gills)
Class Amphibia consist of animals which are strictly ……….. only during their larval stages. At that time they breathe through their …………. Tadpoles are such stages which later ………… to form adult frog. Adult frog respires with the help of ………… when in water and with when on land. Thus, it is a true …………. For performing cutaneous respiration, i.e. respiration through skin, they lack ………. in any form. The skin is also kept moist by staying near the water bodies. Amphibians do not have a ………… but eyes are bulging and prominent, this solves the problems of vision.
Answer:
Class Amphibia consist of animals which are strictly aquatic only during their larval stages. At that time they breathe through their gills. Tadpoles are such stages which later metamorphose to form adult frog. Adult frog respires with the help of skin when in water and with lungs when on land. Thus, it is a true amphibian. For performing cutaneous respiration, i.e. respiration through skin, they lack exoskeleton in any form. The skin is also kept moist by staying near the water bodies. Amphibians do not have a neck but eyes are bulging and prominent, this solves the problems of vision.

Paragraph based questions:

1. Read the paragraph and answer the questions given below:
Locomotion is considered as an important j characteristics of the animals. However, animals belonging to Porifera are said to be sedentary. Every 1 other phylum has typical locomotory organs. E.g. Nereis crawls with the help of parapodia, whereas earthworm buries in soil by setae. Spiders have four pairs of walking legs, crab has five while all insects have three pairs of walking legs. The walking legs are also called appendages. Starfish moves with the help of tube feet. Snails and bivalves use muscular foot for locomotion. Birds flying with their spread out wings and fish swimming with their fins, both have spindle-shaped body tapering at both the ends. While flying or swimming such body offers least resistance during locomotion. Mammals have two pairs of limbs while animals like snakes are limbless. Other animals belonging to the class of snakes also have very weak limbs which make them creep on the ground.

Questions and Answers:

Question 1.
What are the locomotory organs in phylum Annelida?
Answer:
Annelidans have parapodia and setae as the locomotory organs.

Question 2.
Which phylum has a characteristic of jointed appendages?
Answer:
Phylum Arthropoda has a characteristic of jointed appendages.

Question 3.
Which the locomotory organ of animals belong to Phylum Mollusca?
Answer:
Animals belonging to Phylum Mollusca have strong muscular foot which is used for locomotion.

Question 4.
Which class of animals show weak legs?
Answer:
Class Reptilia belonging to subphylum vertebrata show weak legs.

Question 5.
In which class of animals the forelimbs are modified?
Answer:
Class Aves belonging to subphylum vertebrata have wings which are modified forelimbs.

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Diagram based questions:

Question 1.
Sketch, label and classify the following organisms:
1. Liverfluke.
Answer:
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 13
Classification:
Kingdom: Animalia
Division: Non-chordata
Phylum: Platyhelminthes
Example: Liverfluke

2. Leench.
Answer:
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 14
Classification:
Kingdom: Animalia
Division: Non-chordata
Phylum: Annelida
Example: Leech

3. Cockroach:
Answer:
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 15
Classification:
Kingdom: Animalia
Division: Non-chordata
Phylum: Arthopoda
Class: Insecta
Example: Cockroach

Question 2.
Identify the animal given in the figure and label the figure:
1.
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 17
Answer:
Balanoglossus
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 18

2.
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 19
Answer:
Herdmania.
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 20

3.
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 21
Answer:
Amphioxus
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 22

4.
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 23
Answer:
Petromyzon.
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 24

5.
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 25
Answer:
bat
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 26

Question 3.
Identify the class of the animal shown in the figure and write any two characteristics.
Answer:
(1) The animal shown in the figure is bat.
(2) It belongs to class Mammalia of Subphylum Vertebrata. Phylum Chordata.
(3) Characteristics:
(i) Body is divided into head, neck, torso and tail. Patagium present for the flying mode. Nocturnal in habit. It is warm blooded.
(ii) Gives birth to live young ones. Mammary glands present for nourishing young ones.

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Question 4.
Observe the figure and answer the following questions.
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 27
(a) To which phylum these organisms belong?
(b) Name the substance with which their body is covered.
(c) Name their organs of locomotion.
Answer:
(a) The starfish and the sea urchin shown in the figure belong to phylum Echinodermata.
(b) The body of echinoderm animal is covered with calcareous spines or ossicles/plates.
This is the substance covering the body is mostly calcium salts and compounds.
(c) Their locomotory organs are tube feet.

Question 5.
Observe the figures given below and answer the given questions: (Board’s Model Activity Sheet)
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 28
(a) In which phylum are these animals included?
(b) Which substance forms the outer layer of their exoskeleton?
(c) What are their locomotory organs?
Answer:
(a) These animals are included in phylum Arthropoda.
(b) The outer layer of their exoskeleton is covered by chitinous substance.
(c) Their locomotory organs are jointed paired appendages.

Question 6.
Identify the phylum of the given animal and write any two characteristics of this phylum. (Board’s Model Activity Sheet)
Answer:
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 29
This animal is Sycon sponge and its phylum in Porifera.
Characteristics of phylum Porifera
(a) Asymmetrical body.
(b) Many pores on body. Large osculum and smaller ostia.

Question 7.
(a) Identify the animal given here.
(b) Write the phylum to which it belongs.
(c) Identify the pointed parts; p, q, r and s.
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 30
Answer:
(a) The given animal is Octopus.
(b) It belongs to the phylum Mollusca.
(c) p = eye, q = sucker, s = siphon and r = tentacle.

Complete the following charts:

Question 1.
Complete the chart by taking into consideration the criteria for classification: (Text Book Page No. 61)
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 31
Answer:
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 32

Question 2.
Complete the following flow-chart.
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 33
Answer:
(A) Eukaryotes
(B) Monera.

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Activity based questions:

Question 1.
Observe: (Text Book Page No. 65)
(1) Body organization of human has been shown in the following figure. Use appropriate labels for different organs present in human body.
Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification 34
Answer:
There are different organs in the human body. The liver, pancreas, stomach, intestine, etc. related to the digestive system and a pair of kidney concerned with excretion is present in the abdominal cavity. The cranial cavity shows brain and sense organs. In the thoracic cavity there are lungs and heart. In addition to these organs, there are network of blood capillaries, nerve network, etc. which is spread from head to toes.

Question 2.
Why is earthworm called as friend of farmers? (Get Information: Text Book Page No. 69)
Answer:
Earthworms move through the soil in the farms and fields. They feed on the detritus in the soil. They also help in decomposition of the organic matter. When the soil is loosened due to their activities, the roots of the crops grow well. They enrich the soil by their excreta which act as fertilizers. All these facts make earthworm, a farmer’s friend.

Question 3.
In what way the leech is used in ayurvedic system of treatment? (Get Information: Text Book Page No. 69)
Answer:
Leeches are blood sucking ectoparasite. In Ayurveda leech is used to remove impure blood and blood clots. Such blood is sucked up by leeches and then the patient gets some relief. In the leech body there is. a substance called hirudine which prevent blood clotting as it sucks up the blood. This hirudine is also used for medicinal purpose.

Question 4.
What is chitin? (Find out: Text Book Page No. 70)
Answer:
Chitin is a type of polysaccharide. Its chemical formula is (C8H13O5N)n. It is a long-chain polymer of N-acetylglucosamine, which is actually a derivative of glucose. It is a primary component of cell walls in fungi, the exoskeletons of arthropods, such as crustaceans and insects. In many medicines chitin is used. The industrial processes and the biotechnological experiments also use chitin.

Question 5.
Let’s Think: (Text Book Page No. 70)
(i) What types of benefit and harm occur to human from animals of phylum-Arthropoda?
Answer:
Some insects are very useful for us. We get many products from them. e.g. Honey bee, Lac insect, Silk worm, are the insects that provide us with honey and wax, lac and silk respectively. The culture experiments are done on these insects for large scale production of these substances. Butterflies help in the pollination of crops and are thus helpful for the farmers and gardeners. Lady bug beetle is an insect which acts as a natural pest control as it attacks the other harmful insect pests.

In biological pest control methods it is widely used. Some insects, on the contrary are very harmful. Mosquito, bed bugs, lice are blood sucking parasites which can spread the diseases. Mosquito is a vector for dengue, filariasis and malaria. Some are biting insects that can cause wounds, some cause allergies of various kinds. The grains and crops are destroyed to great extent by the insects. In this way the insects belonging to the phylum Arthropods are harmful to health, wealth and peace of mind too.

(ii) Which are the animals from phylum Arthropoda those have shortest and longest life span?
Answer:
The shortest life span: May fly – About 24 hours. The longest life span : Lobster (Homarus americanus) – About 100 years.

(iii) Why has it been said that only insects directly compete with humans for food?
Answer:
The standing crop in the fields can be totally ruined by insects. The locust can damage the crops when they attack in thousands at a time. The grains are also infested by variety of insects like ants, weevils, beetles, etc. Therefore, we can say that only insects compete with humans for food.

Maharashtra Board Class 10 Science Solutions Part 2 Chapter 6 Animal Classification

Project: (Do it your self)

Project 1.
How does the infection of tapeworm in man, liver fluke in grazing animals like goat and sheep occur and what are their preventive measures? (Collect the Information, Internet is my friend: Textbook page no. 69)

Project 2.
How does the infection of round worms like Ascaris, filarial worm and plant nematodes occur and what are their preventive measures and treatment? (Collect the Information, Internet is my friend: Textbook page no. 69)

Project 3.
Books are my friend: Collect the information about pearl production from bivalves by reading appropriate books. (Textbook page no. 70)

Project 4.
Book are my friends: The Animal Kingdom: Libbie Hyman and some other similar books.
(Textbook page no. 75)

Project 5.
Use of Information Technology: (Textbook page no. 75)
Prepare the presentation of animal classification using video clips downloaded from internet.

Maharashtra State Board Class 10 Science Solutions