Class 10 Science

Natural Resources

NCERT Exemplar Problems

MCQ Part 2

Question 13: In our country, there are attempts to increase the height of several existing dams like Tehri and Almati, dams across Narmada. Choose the correct statements among the following that are a consequence of raising the height of dams

  1. Terrestrial flora and fauna of the area is destroyed completely
  2. Dislocation of people and domestic animals living in the area
  3. Valuable agricultural land may be permanently lost
  4. It will generate permanent employment for people
  1. (i) and (ii)
  2. (i), (ii) and (iii)
  3. (ii) and (iv)
  4. (i), (iii) and (iv)

    Answer: (b) (i), (ii) and (iii)

    Explanation: A dam destroys terrestrial flora and fauna because a large area gets submerged. It also results in dislocation of a huge population. Vast tracts of agricultural land are permanently lost due to coming under the catchment area.

Question 14: Expand the abbreviation GAP

  1. Governmental Agency for Pollution Control
  2. Gross Assimilation by Photosynthesis
  3. Ganga Action Plan
  4. Governmental Agency for Animal Protection

    Answer: (c) Ganga Action Plan

Question 15: Select the incorrect statement

  1. Economic development is linked to environmental conservation
  2. Sustainable development encourages development for current generation and conservation of resources for future generations
  3. Sustainable development does not consider the view points of stakeholders
  4. Sustainable development is a long planned and persistent development

    Answer: (c) Sustainable development does not consider the view points of stakeholders

    Explanation: The examples of Arabari forests and Chipko Movement show that involvement of all stakeholders is mandatory for the success of any conservation effort.

Question 16: Which of the following is not a natural resource?

  1. Mango tree
  2. Snake
  3. Wind
  4. Wooden house

    Answer: (d) Wooden house

    Explanation: A house is man-made; no matter if it is wooden or made from bricks and mortar.

Question 17: Select the wrong statement

  1. Forests provide variety of products
  2. Forests have greater plant diversity
  3. Forests do not conserve soil
  4. Forests conserve water

    Answer: (c) Forests do not conserve soil

    Explanation: Forest plays important role in soil conservation because trees hold the topsoil in place.

Question 18: Arabari forests of Bengal is dominated by

  1. Teak
  2. Sal
  3. Bamboo
  4. Mangroove

    Answer: (b) Sal

Question 19: Ground water will not be depleted due to

  1. Afforestation
  2. thermal power plants
  3. loss of forest, and decreased rainfall
  4. cropping of high water demanding crops

    Answer: (a) Afforestation

    Explanation: Afforestation will help in recharge of groundwater and thus it will have a positive impact on water table.

Question 20: Opposition to the construction of large dams is due to

  1. social reasons
  2. economic reasons
  3. enviromental reasons
  4. all the above

    Answer: (d) All of the above

    Explanation: Displacement of people and loss of livelihood are the social reasons. Huge cost is the economic reason. Destruction of flora and fauna in the catchment area is the environmental reason.

Question 21: Khadins, Bundhis, Ahars and Kattas are ancient structures that are examples for

  1. grain storage
  2. wood storage
  3. water harvesting
  4. soil conservation

    Answer: (c) Water harvesting

Question 22: Pick the right combination of terms which has no fossil fuel.

  1. Wind, ocean and coal
  2. Kerosene, wind and tide
  3. Wind, wood, sun
  4. Petroleum, wood, sun

    Answer: (c) Wind, wood, sun

Question 23: Select the eco-friendly activity among the following

  1. Using car for transportation
  2. Using polybags for shopping
  3. Using dyes for colouring clothes
  4. Using windmills to generate power for irrigation

    Answer: (d) Using windmills to generate power for irrigation

    Explanation: Using windmills involves using wind energy which is a renewable source of energy.

Question 24: It is important to make small check dams across the flooded gullies because they

  1. hold water for irrigation
  2. hold water and prevent soil erosion
  3. recharge ground water
  4. hold water permanently
  1. (i) and (iv)
  2. (ii) and (iii)
  3. (iii) and (iv)
  4. (ii) and (iv)

    Answer: (b) (ii) and (iii)

    Explanation: Check dams cannot hold water permanently and hence there cannot be continuous supply for irrigation. However, check dams facilitate the recharge of groundwater by holding water for some time.