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Question (11)

QN0031458

A town has the following resources: I. Air II. Coal III. Water IV. Natural gas If all renewable resources are grouped together, which set is correct?

(A) I and II
(B) II and IV
(C) I and III
(D) III and IV

Correct Answer: C

Explanation:

Air and water are renewable resources, whereas coal and natural gas are non-renewable.

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Question (12)

QN0031459

A student observes that one soil sample contains many earthworms while another has none. Which conclusion is most reasonable?

(A) Earthworms damage the soil
(B) Earthworms help loosen and improve the soil
(C) Earthworms remove minerals from the soil
(D) Earthworms prevent plant growth

Correct Answer: B

Explanation:

Earthworms naturally loosen and turn the soil, improving aeration and making it suitable for plant growth.

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Question (13)

QN0031460

A factory plans to replace diesel generators with solar panels wherever possible. Which benefit will it receive?

(A) Increased use of fossil fuels
(B) Reduced air pollution and fuel consumption
(C) Increased production of smoke
(D) Faster formation of petroleum

Correct Answer: B

Explanation:

Solar energy is a clean source of energy that reduces dependence on fossil fuels and lowers air pollution.

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Question (14)

QN0031461

A class surveyed 80 vehicles. The results were: Petrol: 40 Diesel: 20 CNG: 20 What percentage of the vehicles used cleaner CNG fuel?

(A) 20%
(B) 25%
(C) 30%
(D) 40%

Correct Answer: B

Explanation:

CNG vehicles = 20 out of 80. Percentage = (20 ÷ 80) × 100 = 25%.

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Question (15)

QN0031462

Which of the following best explains why forests are called a "natural home" for wildlife?

(A) Forests provide only food
(B) Forests provide only shade
(C) Forests provide food, shelter and suitable living conditions
(D) Forests provide minerals for animals

Correct Answer: C

Explanation:

Forests provide food, shelter, nesting places and suitable habitats for numerous plants and animals.

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Question (16)

QN0031463

A family wants to reduce water wastage at home. Which practice will have the least effect?

(A) Repairing leaking taps
(B) Turning off taps while brushing
(C) Collecting rainwater
(D) Throwing garbage into a pond

Correct Answer: D

Explanation:

Throwing garbage into a pond pollutes water instead of conserving it.

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Question (17)

QN0031464

Which sequence correctly represents the formation of a fossil fuel?

(A) Rocks → Soil → Petroleum
(B) Plants and microorganisms → Buried underground → Millions of years → Fossil fuel
(C) Water → Air → Coal
(D) Soil → Trees → Petrol

Correct Answer: B

Explanation:

Fossil fuels are formed from the buried remains of plants and microorganisms over millions of years.

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Question (18)

QN0031465

A village plants 240 saplings during Van Mahotsav. After one year, 180 saplings survive. What percentage of the planted saplings survived?

(A) 65%
(B) 70%
(C) 75%
(D) 80%

Correct Answer: C

Explanation:

Percentage survived = (180 ÷ 240) × 100 = 75%.

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Question (19)

QN0031466

Which statement correctly distinguishes natural resources from human-made resources?

(A) Both are formed naturally.
(B) Natural resources are obtained from nature, while human-made resources are created by humans using natural resources.
(C) Human-made resources are always renewable.
(D) Natural resources never get exhausted.

Correct Answer: B

Explanation:

Air, water and forests are natural resources, whereas furniture, bicycles and electric bulbs are human-made resources made using natural resources.

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Question (20)

QN0031467

A student prepared the following chart: Air → Renewable Petroleum → Non-renewable Forest → Renewable Minerals → Renewable Which entry is incorrect?

(A) Air → Renewable
(B) Petroleum → Non-renewable
(C) Forest → Renewable
(D) Minerals → Renewable

Correct Answer: D

Explanation:

Minerals take millions of years to form and cannot be replenished within a reasonable period. Therefore, they are non-renewable resources.

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Question (11)

A town has the following resources: I. Air II. Coal III. Water IV. Natural gas If all renewable resources are grouped together, which set is correct?

Explanation:

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Question (12)

A student observes that one soil sample contains many earthworms while another has none. Which conclusion is most reasonable?

Explanation:

Link:

Question (13)

A factory plans to replace diesel generators with solar panels wherever possible. Which benefit will it receive?

Explanation:

Link:

Question (14)

A class surveyed 80 vehicles. The results were: Petrol: 40 Diesel: 20 CNG: 20 What percentage of the vehicles used cleaner CNG fuel?

Explanation:

Link:

Question (15)

Which of the following best explains why forests are called a "natural home" for wildlife?

Explanation:

Link:

Question (16)

A family wants to reduce water wastage at home. Which practice will have the least effect?

Explanation:

Link:

Question (17)

Which sequence correctly represents the formation of a fossil fuel?

Explanation:

Link:

Question (18)

A village plants 240 saplings during Van Mahotsav. After one year, 180 saplings survive. What percentage of the planted saplings survived?

Explanation:

Link:

Question (19)

Which statement correctly distinguishes natural resources from human-made resources?

Explanation:

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Question (20)

A student prepared the following chart: Air → Renewable Petroleum → Non-renewable Forest → Renewable Minerals → Renewable Which entry is incorrect?

Explanation:

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