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Question (21)

QN0021096

A mature tree produces about 275 litres of oxygen daily. How much oxygen would 4 mature trees produce in a day?

(A) 825 litres
(B) 950 litres
(C) 1,100 litres
(D) 1,200 litres

Correct Answer: C

Explanation:

275 × 4 = 1,100 litres.

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Question (22)

QN0021097

A person requires about 350 litres of oxygen daily. Approximately how many mature trees are needed to meet this requirement?

(A) 1
(B) 2
(C) 3
(D) 4

Correct Answer: B

Explanation:

350 ÷ 275 ≈ 1.27, so at least 2 trees are needed.

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Question (23)

QN0021098

If 10 mature trees produce oxygen at the stated rate, how much oxygen will they generate daily?

(A) 2,500 litres
(B) 2,650 litres
(C) 2,750 litres
(D) 3,000 litres

Correct Answer: C

Explanation:

10 × 275 = 2,750 litres.

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Question (24)

QN0021099

A village has 8 mature trees. Their total daily oxygen production is closest to:

(A) 1,800 litres
(B) 2,000 litres
(C) 2,200 litres
(D) 2,400 litres

Correct Answer: C

Explanation:

8 × 275 = 2,200 litres.

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Question (25)

QN0021100

Which of the following is a non-renewable resource?

(A) Solar energy
(B) Wind energy
(C) Coal
(D) Flowing water

Correct Answer: C

Explanation:

Coal is a non-renewable fossil fuel.

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Question (26)

QN0021101

Why are fossil fuels classified as non-renewable?

(A) They are not useful
(B) They form over very long periods and cannot be replenished quickly
(C) They are found only in India
(D) They do not produce energy

Correct Answer: B

Explanation:

Fossil fuels take millions of years to form.

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Question (27)

QN0021102

Coal reserves are estimated to last another 50 years. If used carelessly, the reserves may:

(A) Last longer
(B) Be exhausted sooner
(C) Become renewable
(D) Increase naturally

Correct Answer: B

Explanation:

Excessive use reduces the lifespan of reserves.

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Question (28)

QN0021103

A country consumes a mineral twice as fast as it forms naturally. The mineral should be classified as:

(A) Renewable
(B) Infinite
(C) Non-renewable
(D) Cultural

Correct Answer: C

Explanation:

The resource cannot replenish at the rate it is used.

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Question (29)

QN0021104

Natural resources are unevenly distributed. One consequence is:

(A) Uniform economic development everywhere
(B) No trade between regions
(C) Growth of industries near resource-rich areas
(D) Equal employment in all locations

Correct Answer: C

Explanation:

Industries often develop near resource-rich regions.

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Question (30)

QN0021105

Townships often grow around resource-rich regions because:

(A) Resources discourage settlement
(B) Employment opportunities increase
(C) Agriculture stops completely
(D) Rivers disappear

Correct Answer: B

Explanation:

Resource-based industries create jobs and attract people.

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Question (21)

A mature tree produces about 275 litres of oxygen daily. How much oxygen would 4 mature trees produce in a day?

Explanation:

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Question (22)

A person requires about 350 litres of oxygen daily. Approximately how many mature trees are needed to meet this requirement?

Explanation:

Link:

Question (23)

If 10 mature trees produce oxygen at the stated rate, how much oxygen will they generate daily?

Explanation:

Link:

Question (24)

A village has 8 mature trees. Their total daily oxygen production is closest to:

Explanation:

Link:

Question (25)

Which of the following is a non-renewable resource?

Explanation:

Link:

Question (26)

Why are fossil fuels classified as non-renewable?

Explanation:

Link:

Question (27)

Coal reserves are estimated to last another 50 years. If used carelessly, the reserves may:

Explanation:

Link:

Question (28)

A country consumes a mineral twice as fast as it forms naturally. The mineral should be classified as:

Explanation:

Link:

Question (29)

Natural resources are unevenly distributed. One consequence is:

Explanation:

Link:

Question (30)

Townships often grow around resource-rich regions because:

Explanation:

Link:

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