Important Questions CBSE Class 10th : Social Science Year
(Forest and Water Resources)
Question .1. State the four main vegetation regions of
Answer : (i) Tropical rain forests.
(ii) Tropical deciduous forests.
(iii) Tropical thorn forests and shrubs.
(iv) Tidal forest/Mongrove forest.
Question .2. State ‘biosphere reserve’ with examples?
Answer : It is a multipurpose protected area to preserve the genetic
diversity in the representative eco system. In India 12 biosphere reserve has
been developed to preserve natural habitat and protect them from becoming
Example :-(i) Nilgiri biosphere reserve,
(iii) Periyar, etc.
Question .3. Why is conservation of wildlife essential?
Answer : Disappearance of wildlife and wide variety of plants is due to
depletion of forest. This may also lead to serious deterioration of genetic
Question .4. What do you mean by National Park?
Answer : A National Park is a large area where one or several ecosystems
exist. Here plant and animal species and habitats are of special educative and
Example :- (i) Simlipal at Orissa.(ii) Corbett in Uttaranchal.
Question .5. What are reserve forests?
Answer : Reserve forests are forest which are permanently earmarked for the
production of timber or other forest produce. Right of grazing and cultivation
is seldom allowed in this forest.
Question .6. What is the percentage area coverage of forest land in India?
Answer : At present 23% of geographical area is covered by forest in India.
Question .7. Is irrigation necessary in India? If yes, why?
Answer : Agriculture is the main occupation of Indian. Rain is concentrated
only from June to September.The rainfall is not certain.This affects crops
badly. Thus timely and adequate irrigation in necessary for the productivity and
quality of crops.
Question .8. State two areas where canal irrigation has developed lot of net
sown area under irrigation?
Answer : (i) Northern area (ii) Coastal plains.
Question .9. What is a river valley project?
Answer : It is a multipurpose river valley project meant to tackle various
problems associated with river valleys in an integrated manner.For example:-
flood control, irrigation, hydroelectricity, etc.
Question .10. State the names of states of India where 40% of net sown area are
Answer : The states hving over 40% of net sown area under irrigation are:-
(i) Punjab (ii) Haryana (iii) Uttar Pradesh (iv) Bihar (v) Jammu and Kashmir
(vi) Tamil Nadu (vii) Manipur
Question .11. What do you mean by watershed development?
Answer : The watershed is a basin of a tributary and the watershed
development is the integrated development of small natural unit area.This is a
holistic approach which includes moisture conservation, water harvesting,
afforestation, horticulture, pasture development, etc.
Question .12. What do you mean by rainwater harvesting?
Answer : It is a technique of increasing the recharge of ground water by
capturing and collecting rain water to meet the household needs through storage
Question .13. What are the plans taken into consideration for watershed
Answer : The plans taken into consideration are:-
(i) The Land Capability.
(ii) The Need of The People.
(iii) The Participation of The Local People.
Question .14. What are the two basic needs of life?
Answer : (i) Supply of drinking water (ii) Sanitation
Question .15. There is a yawning gap between demand and supply of water. Why?
Answer : There is a yawning gap between demand and supply of water because
8% of the town in India do not have potable water supply. Nearly 50% of the
villages are yet to be provided with protected drinking water.
Question .16. State the causes of growing scarcity of water?
Answer : Causes of growing scarcity of water are:-
(i) Rapidly growing population.
(ii) Rising demand for food and cash crop.
(iii) Increasing urbanization.
(iv) Rising standard of living.
Question .17. State the names of states where tank irrigation is common?
Answer : Tank irrigation is common in the following states:-
(i) Andhra Pradesh
(iii) Tamil Nadu.
Question .18. State the major resources of irrigation. Which of them is most
Answer : The major resources of irrigation are:-(i) Canals
(ii) Wells and Tube-wells
Wells and Tube-wells are the most widespread sources.
Question .19. State the names of intensely irrigated area in India?
Answer : There is a wide variation in irrigated areas within each state.The
intensely irrigated areas are:-
(i) The Godavari-Krishna delta,
(ii) Coastal district of Andhra Pradesh,
(iii) Mahanadi delta of Orissa,
(iv) Cauvery delta of Tamil Nadu,
(vii) Western Uttar Pradesh.
Question .20. State the percentage of net sown area under irrigation in India.
Name the state with the maximum and minimum net sown area under irrigation?
Answer : Nearly 38% of the net sown area in India is under irrigation. The
percentage of Punjab is the maximum i.e. 90.8% and Mizoram the minimum i.e.
Question .21. Classify the forest according to their density?
Answer : According to the density the forest are classified as under:-
(i) Dense forest = 59%
(ii) Open forest = 40%
(iii) Mangrove forest = 1%
Question .22. Differentiate between forest area and forest cover?
(i) Forest area in India is 23%.
(i) The actual area covered by forest is 19.4%
(ii) Dense forest =59%
Open forest = 40%
Mangrove forest =1%
(ii) Reserved = 54%
Protected = 29%
Unclassed = 16%
(iii) Delhi, Punjab, etc. have less than 10%
area under forests.
(iii) Mizoram, Manipur,etc.have 60% area covered
Question .23. State the minimum desired area under forest.
State the name of an area with the maximum and minimum area under forest?
Answer : According to the National Forest Policy, the minimum desired area
under forest in the country should be 33%. Andaman and Nicobar Island have 86.9%
forest and Haryana has 3.8%.
Question .24. Name the area which have less than 10% of the area under forest?
Answer : (i) Punjab (ii) Haryana (iii) Gujarat (iv) Rajasthan (v) Delhi (vi)
Jammu and Kashmir
Question .25. Name the animals of the Himalayan ranges?
Answer : (i) wild sheep (ii) mountain goat (iii) panda (iv) snow leopard
Question .26. Give any four ways in which forests contribute towards our
Answer : (i) Forests support various industries.
(ii) Provide livelihood for many communities.
(iii) Provide fuel wood.
(iv) Forests provide medicinal plants.
Question .27. What percentage of water is used for irrigation? Why?
Answer : For Irrigation 84% of water is used because agriculture is the main
occupation in India and rainfall is not sufficient.
Question .28. Why are the Himalayan rivers perennial? Why are peninsular rivers
Answer : Himalayan rivers have their source in the glaciers and snow fields.
Hence they are perennial. For example Ganga from Gangotri glacier and Yamuna
from Yamunotri glacier.The rivers are seasonal as they depends entirely on
monsoonrains. For example Godavari, Narmada, Krishna, Cauveri, etc.
Question .29. Describe replenishable groundwater resources of India?
Answer : The replenishable groundwater potential in India is about 43.4
billion cubic metres. It is mostly available on plains and 37% of this is being
used. There are several low cost techniques to recharge groundwater aquifer.
(i) Construction of percolation pits
(ii) Digging trenches around field
(iii) Refilling of dug wells
(iv) Building check dams on small rivulets
(v) Harvesting of roof water and storing it in tanks or below the ground
Question .30. How will you classify the forest for the purpose of
Answer : For administration purposes, forests are classified as follows:-(i)
Reserved forests – These are reserved to provide forest products like timber.
Grazing and cultivation are seldom allowed.
(ii) Protected forests – These allow grazing and cultivation with minor
(iii) Unclaimed forests – They consists largely of inaccessible forests or
Question .31. State the advantages of social forestry and farm forestry?
Answer : Social forestry and farm forestry will provide fodder and fuel.
Afforestation will check soil erosion by regulating stream flow.Wildlife and
wild variety of plants will be conserved.
Question .32. State the name of animals associated with the following places:
(i) West Bengal
(ii) Rann of Kachch
(vi) Thar desert
Answer : (i) West Bengal – Tiger
(ii) Ranna of Kachch – Wild Ass
(iii) Assam – Rhinoceros
(iv) Gir – Lion
(v) Kerala – Elephant
(vi) Thar desert – Camel
Question .33. What is Van Mahotsava? How conservation of forest can be
contributed by us?
Answer : (i) A date set to plant saplings all over the country is known as
(ii) (a) By creating public awareness about the importance of trees.
(b) All the national day celebration programme should follow tree plantation
Question .34. What is conservation of wetlands in India?
Answer : In India there are programme for
conservation of wetlands, mangroves and coral reefs under the preservation of
special ecosystem. There are 20 wetlands in India and most of them are directly
and indirectly linked with major system like Ganga, Brahmaputra, Narmada, Tapi,
Godavari, Krishna, etc.
Question . 35. What is the objectives of Multipurpose River Valley Projects.
Answer : The objectives of Multipurpose River Valley
(i) to control flood
(ii) to check soil erosion
(iii) to provide water for irrigation
(iv) to provide water for drinking
(v) to generate electricity
(vi) to provide inland navigation
(vii) to encourage tourism and recreaction
(viii) to preserve wildlife
(ix) to develop fisheries, etc
Example : - Bhakhra Nangal, Hirakund, Kosi, Chambal, etc.
Question .36. Name one National Park each of Uttar Pradesh and
Gujarat. Why are elephants found mainly in Assam. Kerala and Karnaka?
Answer : (i) Uttar Pradesh____Jim Corbett National Park.
(ii) Gujarat____Gir forest.
Elephant are found in Kerala, Assam and Karnataka as there are Tropical rain
Question .37. “Availability of water varies from place to place and time to time
in India.” Explain the statement with one example of each?
Answer : Water is essential for life. It is considered as pre-condition of
life. It is very critical and important resource of India. The monsoon rainfall
throughout the country is essential. Delhi and jodhpur receive rainfall for two
to three months while Thiruvanathapuram for eight to nine months.
Question .38. Describe the importance of water in life?
Answer : Importance of water are:-
(i) It is required for drinking and other domestic use.
(ii) It is used for industrial purposes.
(iii) It is used for irrigation.
(iv) The growing urbanization is also demanding greater share of water.
(v) Water has become indispensable for the disposal of ever growing municipal
sewage and dirt of all sorts.
Question .39. Differentiate between Himalayan and Peninsular rivers?
(i) The rivers have their sources in
glaciers and snow fields.
(i) The source of rivers is not
fixed. It depends on monsoon rain.
(ii) The rivers are perennial.
(ii) The rivers are seasonal.
(iii) The rivers are used for
irrigation, navigation and generating hydroelectricity.
(iii) The rivers are useful only in
the lower course.
(iv) The rivers flow through deep
valleys. e.g. Ganga, Yamuna.
(iv) The rivers flow through broad
shallow valleys. e.g. Godavari.
Question .40. How forests are useful to man?
Answer : Forest are renewable source and its contribution towards economic
development is known to all. They perform following functions:-
Protective functions of forest are:-
(a) To improve the quality of the environment.
(b) To modify local climate.
(c) To control soil erosion.
(d) To regulate flow of the streams.
(e) To reduce wind force and influence air temperature.
(f) To provide humus to the soil and increase its fertility.
(g) To provide wildlife.
Productive function of forest are:-
(a) Provide livelihood for many communities.
(b) Offer opportunities for recreation.
(c) Provide industrial wood.
(d) Provide timber.
(e) Provide fuel wood.
(f) Provide fodder for the animals.
(g) Support a variety of industries, e.g. rubber.
Question .41. How will you provide efficient management of our water resources?
For efficient management of water we should do the
(i) By creating awareness among the community
(ii) By involving the people
(iii) Avoiding use of treated water for gardening, washing, toilets and wash
(iv) By registering water extraction point
(v) To check water extraction point to prevent drying up of underground water
(vi) By preventing pollution of water-bodies
(vii) Maintaining water supply pipelines.