NMMS CLASS 8 SOCIAL SCIENCE CH 1 NATURAL RESOURCES AND THEIR USE CBA 1

 

Question 1 of 20

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1. A village harvests timber every year. When will the forest remain a renewable resource?

• The forest must be allowed enough time to regenerate.
• The forest must be cleared after every harvest.
• The forest must be harvested faster each year.
• The forest must be used without studying its growth.

Correct Answer: The forest must be allowed enough time to regenerate.

2. A fishing community stops fishing during the spawning season. Why is this practice important?

• It increases commercial fishing throughout the year.
• It allows fish populations to maintain themselves.
• It increases the immediate quantity of fish caught.
• It replaces traditional fishing with industrial fishing.

Correct Answer: It allows fish populations to maintain themselves.

3. A farmer pumps groundwater faster than rainfall replenishes it. What is the most likely long-term consequence?

• The groundwater level will increase every year.
• The water table will remain permanently unchanged.
• The cost of groundwater extraction may increase.
• The groundwater supply will automatically become abundant.

Correct Answer: The cost of groundwater extraction may increase.

4. Why can a renewable resource become depleted?

• Its natural supply becomes independent of human use.
• Its natural regeneration always exceeds human demand.
• Its natural restoration or regeneration is disturbed.
• Its use automatically increases its future availability.

Correct Answer: Its natural restoration or regeneration is disturbed.

5. A region has abundant coal but uses it carelessly. Which principle should guide its use?

• Non-renewable resources should be consumed rapidly.
• Non-renewable resources should never provide energy.
• Non-renewable resources should be treated as renewable.
• Non-renewable resources should be used judiciously.

Correct Answer: Non-renewable resources should be used judiciously.

6. A farmer wants to reduce soil degradation through traditional practices. Which combination is most suitable?

• Chemical pesticides, deep ploughing and single-cropping.
• Natural fertilisers, mulching and multi-cropping.
• Synthetic fertilisers, pesticides and monocropping.
• Industrial chemicals, excessive irrigation and monocropping.

Correct Answer: Natural fertilisers, mulching and multi-cropping.

7. A state has rich natural resources but develops slowly. Which idea from the chapter best explains this possibility?

• Resource wealth always guarantees rapid development.
• Resource-rich regions cannot develop industries.
• Resource wealth alone does not guarantee prosperity.
• Resource-rich regions never experience economic problems.

Correct Answer: Resource wealth alone does not guarantee prosperity.

8. Two states depend on the same river. Which approach best supports fair sharing?

• Exclusive control by the state where the river begins.
• Unlimited extraction by the larger state.
• Negotiation and deft management among concerned states.
• Continuous extraction without considering other users.

Correct Answer: Negotiation and deft management among concerned states.

9. Why can uneven distribution of resources influence international relations?

• Countries become economically equal despite resource differences.
• Natural resources have no effect on international relations.
• Countries may compete for access to valuable resources.
• Resource distribution completely prevents international trade.

Correct Answer: Countries may compete for access to valuable resources.

10. A region has minerals but develops few high-value industries. What problem may arise?

• It will automatically become economically prosperous.
• It will necessarily become independent of technology.
• It may experience the natural resource curse.
• It will avoid all economic and social conflicts.

Correct Answer: It may experience the natural resource curse.

11. Which action can help raise declining groundwater levels?

• Increasing groundwater extraction for additional crops.
• Allowing more water to be wasted during irrigation.
• Replacing water reuse with greater freshwater consumption.
• Rejuvenating ponds and tanks can support groundwater restoration.

Correct Answer: Rejuvenating ponds and tanks can support groundwater restoration.

12. Why did groundwater extraction increase in Punjab after farmers shifted to high-yielding wheat and paddy?

• The new varieties required less water than traditional seeds.
• The new varieties completely eliminated irrigation needs.
• The new varieties required more water than traditional seeds.
• The new varieties stopped farmers from using groundwater.

Correct Answer: The new varieties required more water than traditional seeds.

13. What additional factor encouraged over-pumping of groundwater in Punjab?

• The shortage of electricity stopped groundwater extraction.
• The supply of free power encouraged over-pumping.
• Traditional seeds reduced the need for groundwater.
• Reduced irrigation made groundwater unnecessary.

Correct Answer: The supply of free power encouraged over-pumping.

14. Which farming practices support holistic soil management according to the chapter?

• The use of cow dung, mulching and multi-cropping.
• The continuous use of chemical pesticides alone.
• The replacement of natural fertilisers with chemicals.
• The repeated cultivation of a single crop only.

Correct Answer: The use of cow dung, mulching and multi-cropping.

15. Why did chemical use in Punjab become a serious concern?

• Chemicals from pesticides and fertilisers improved groundwater quality.
• Chemicals from pesticides and fertilisers disappeared completely.
• Chemicals from pesticides and fertilisers dissolved in groundwater.
• Chemicals from pesticides and fertilisers increased water availability.

Correct Answer: Chemicals from pesticides and fertilisers dissolved in groundwater.

16. A city reduces wasteful water use and reuses processed water. What does this demonstrate?

• It demonstrates unrestricted consumption of water.
• It demonstrates greater dependence on groundwater extraction.
• It demonstrates responsible use of water resources.
• It demonstrates the replacement of conservation with consumption.

Correct Answer: It demonstrates responsible use of water resources.

17. A tree falls in a forest and decomposes. How does this illustrate Nature's cycle?

• The tree permanently removes nutrients from the forest.
• The tree prevents new plants from growing.
• The tree enriches the soil and supports new growth.
• The tree immediately becomes a non-renewable resource.

Correct Answer: The tree enriches the soil and supports new growth.

18. Why is careful use of non-renewable resources necessary?

• They are naturally regenerated as quickly as forests.
• They cannot be replenished at the rate we use them.
• They become more abundant through continuous extraction.
• They are restored immediately after human consumption.

Correct Answer: They cannot be replenished at the rate we use them.

19. A community protects natural resources for present and future generations. Which idea does this best represent?

• It represents unrestricted exploitation of natural resources.
• It represents maximum short-term consumption.
• It represents complete dependence on fossil fuels.
• It represents stewardship of natural resources.

Correct Answer: It represents stewardship of natural resources.

20. A resource-rich region wants long-term prosperity. Which strategy best follows the chapter's message?

• Increasing raw-material extraction without developing local skills.
• Depending completely on natural resources for economic growth.
• Developing technology and skills along with responsible resource use.
• Using resources rapidly without considering regeneration.

Correct Answer: Developing technology and skills along with responsible resource use.