Chapter Exam

Chapter-1 Natural Resources and Their Use — Online MCQ Test

Q: Which of the following is an example of a renewable resource?

Answer: B. Solar energy — Solar energy is a renewable resource as it can be replenished naturally and continuously. Coal, petroleum, and natural gas are non-renewable fossil fuels.

Q: Which resource takes millions of years to form and cannot be quickly replenished?

Answer: B. Non-renewable resource — Non-renewable resources like fossil fuels take millions of years to form and once exhausted, cannot be replenished in our lifetime. Renewable resources can be replenished naturally.

Q: Which of the following is NOT a renewable resource?

Answer: C. Copper ore — Copper ore is a non-renewable mineral resource that takes millions of years to form. Wind, forests, and water are renewable resources.

SOCIAL · Grade 8 · CBSE(NCERT)

Practice Chapter-1 Natural Resources and Their Use with a free chapter-wise online MCQ test for CBSE(NCERT) Grade 8 SOCIAL. This chapter covers: ecosystem - renewable resources - non-renewable resources - sustainability - overexploitation - resource conservation - natural restoration. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter-1 Natural Resources and Their Use — Important Questions & Answers (FAQ)

Frequently asked questions from CBSE(NCERT) Grade 8 SOCIAL — Chapter-1 Natural Resources and Their Use, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which of the following is an example of a renewable resource?

A. Coal
B. Solar energy ✓
C. Petroleum
D. Natural gas

Answer: B. Solar energy
Solar energy is a renewable resource as it can be replenished naturally and continuously. Coal, petroleum, and natural gas are non-renewable fossil fuels.

What is an ecosystem?

A. A community of organisms living in isolation
B. A system where living organisms interact with their physical environment ✓
C. Only the plants in a geographical area
D. A collection of non-living things only

Answer: B. A system where living organisms interact with their physical environment
An ecosystem is a functional unit comprising all living organisms and their physical environment interacting together. It includes both biotic and abiotic components.

Which resource takes millions of years to form and cannot be quickly replenished?

A. Renewable resource
B. Non-renewable resource ✓
C. Forest resource
D. Water resource

Answer: B. Non-renewable resource
Non-renewable resources like fossil fuels take millions of years to form and once exhausted, cannot be replenished in our lifetime. Renewable resources can be replenished naturally.

What does sustainability mean in the context of natural resources?

A. Using resources without any limit
B. Using resources in a way that meets present needs without compromising future generations ✓
C. Storing all resources for the future
D. Avoiding the use of any natural resources

Answer: B. Using resources in a way that meets present needs without compromising future generations
Sustainability means using natural resources responsibly so that they remain available for future generations. It balances present use with future availability.

Which of the following is NOT a renewable resource?

A. Wind energy
B. Forest
C. Copper ore ✓
D. Water

Answer: C. Copper ore
Copper ore is a non-renewable mineral resource that takes millions of years to form. Wind, forests, and water are renewable resources.

What is overexploitation of natural resources?

A. Using resources for industrial purposes only
B. Extracting resources faster than they can be naturally replenished ✓
C. Using renewable resources only
D. Protecting resources from human use

Answer: B. Extracting resources faster than they can be naturally replenished
Overexploitation occurs when resources are extracted, harvested, or used at a rate faster than they can be naturally restored, leading to depletion.

Why are forests considered renewable resources despite being heavily exploited?

A. Because they are abundant and never run out
B. Because they can naturally regrow and reproduce if given proper conditions and time ✓
C. Because new forests are created every year
D. Because they are not affected by human activities

Answer: B. Because they can naturally regrow and reproduce if given proper conditions and time
Forests are renewable because trees can regenerate through natural reproduction. However, if overexploited beyond their regeneration capacity, they can become depleted.

How does deforestation affect an ecosystem?

A. It has no impact on other living organisms
B. It disrupts food chains, causes soil erosion, and reduces biodiversity ✓
C. It only affects trees, not other species
D. It leads to increased rainfall in the region

Answer: B. It disrupts food chains, causes soil erosion, and reduces biodiversity
Deforestation disrupts ecosystems by breaking food chains, causing habitat loss, increasing soil erosion, and significantly reducing biodiversity and species populations.

Analyze this scenario: A coastal region has been fishing sustainably for decades, but suddenly catches triple their usual harvest for two years. What long-term consequences would likely follow?

A. The fish population would continue to increase indefinitely
B. Fish populations would collapse, fishing would become unviable, and the local economy would suffer ✓
C. No impact on marine ecosystems
D. The water would become cleaner

Answer: B. Fish populations would collapse, fishing would become unviable, and the local economy would suffer
Exceeding the sustainable yield by triple causes fish populations to crash faster than they can reproduce, destroying the fishery and the ecosystem's ability to recover quickly.

Which factors work together to make mineral resources especially vulnerable to overexploitation compared to forest resources?

A. Minerals reproduce quickly and are abundant everywhere
B. Minerals take millions of years to form and have no biological reproduction mechanism, making depletion permanent within human timescales ✓
C. Minerals are renewable because they are found underground
D. Minerals can be created in laboratories

Answer: B. Minerals take millions of years to form and have no biological reproduction mechanism, making depletion permanent within human timescales
Minerals are formed over geological timescales and cannot naturally reproduce or regenerate. Once extracted, they are gone forever, making sustainable use impossible.

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Chapter-2 Reshaping India's Political Map