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Question (21)

QN0021136

A village uses 700 units of groundwater annually while natural recharge is 900 units. The groundwater reserve will:

(A) Increase by 200 units
(B) Decrease by 200 units
(C) Remain unchanged
(D) Become non-renewable immediately

Correct Answer: A

Explanation:

900 − 700 = 200 units surplus.

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Question (22)

QN0021137

Which natural process helps make soil a renewable resource?

(A) Mining
(B) Natural replenishment
(C) Drilling
(D) Smelting

Correct Answer: B

Explanation:

Soil renews itself through natural replenishment processes.

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Question (23)

QN0021138

A forest produces 1,000 units of timber yearly. Sustainable harvesting would be closest to:

(A) 500 units
(B) 1,000 units or less
(C) 1,500 units
(D) 2,000 units

Correct Answer: B

Explanation:

Sustainable use should not exceed regeneration.

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Question (24)

QN0021139

Coal reserves are expected to last 50 years. If consumption doubles while reserves remain unchanged, the reserves may last approximately:

(A) 100 years
(B) 75 years
(C) 50 years
(D) 25 years

Correct Answer: D

Explanation:

Doubling consumption halves the duration.

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Question (25)

QN0021140

Which resource category includes gold, marble and wood?

(A) Resources for materials
(B) Resources for life
(C) Resources for energy
(D) Atmospheric resources

Correct Answer: A

Explanation:

These resources are used as materials.

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Question (26)

QN0021141

A community plants 300 trees annually while 180 trees are cut. What is the net annual change?

(A) +120 trees
(B) –120 trees
(C) +480 trees
(D) –480 trees

Correct Answer: A

Explanation:

300 − 180 = 120 trees.

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Question (27)

QN0021142

Which pair consists entirely of renewable resources?

(A) Coal and petroleum
(B) Gold and copper
(C) Wind and sunlight
(D) Iron and coal

Correct Answer: C

Explanation:

Wind and sunlight are naturally replenished.

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Question (28)

QN0021143

Which pair consists entirely of non-renewable resources?

(A) Coal and petroleum
(B) Water and sunlight
(C) Wind and timber
(D) Forests and rivers

Correct Answer: A

Explanation:

Coal and petroleum take millions of years to form.

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Question (29)

QN0021144

A renewable resource replenishes 1,500 units annually. If humans use 1,800 units, what is the annual deficit?

(A) 100 units
(B) 200 units
(C) 300 units
(D) 400 units

Correct Answer: C

Explanation:

1,800 − 1,500 = 300 units.

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Question (30)

QN0021145

Which category of resources directly supports human survival?

(A) Resources for materials
(B) Resources essential for life
(C) Resources for industry only
(D) Resources for transport only

Correct Answer: B

Explanation:

Air, water and food are essential for survival.

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Question (21)

A village uses 700 units of groundwater annually while natural recharge is 900 units. The groundwater reserve will:

Explanation:

Link:

Question (22)

Which natural process helps make soil a renewable resource?

Explanation:

Link:

Question (23)

A forest produces 1,000 units of timber yearly. Sustainable harvesting would be closest to:

Explanation:

Link:

Question (24)

Coal reserves are expected to last 50 years. If consumption doubles while reserves remain unchanged, the reserves may last approximately:

Explanation:

Link:

Question (25)

Which resource category includes gold, marble and wood?

Explanation:

Link:

Question (26)

A community plants 300 trees annually while 180 trees are cut. What is the net annual change?

Explanation:

Link:

Question (27)

Which pair consists entirely of renewable resources?

Explanation:

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Question (28)

Which pair consists entirely of non-renewable resources?

Explanation:

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Question (29)

A renewable resource replenishes 1,500 units annually. If humans use 1,800 units, what is the annual deficit?

Explanation:

Link:

Question (30)

Which category of resources directly supports human survival?

Explanation:

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