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Question (1)

QN0031808

A school has 24 classrooms. In 6 classrooms, the lights are left on even though no one is inside. What fraction of the classrooms are wasting electricity?

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

Correct Answer: C

Explanation:

6 out of 24 classrooms are wasting electricity, so 6/24 = 1/4.

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Question (2)

QN0031809

Which group should check whether water tanks are clean, covered and taps are leaking?

(A) Waste Warriors
(B) Green Guardians
(C) Water Watchers
(D) Traffic Trackers

Correct Answer: C

Explanation:

Water Watchers observe water use, leaking taps and water tanks.

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Question (3)

QN0031810

A school has 8 leaking taps. Each tap wastes 5 glasses of water every day. How many glasses of water are wasted in one day?

(A) 30
(B) 35
(C) 40
(D) 45

Correct Answer: C

Explanation:

8 × 5 = 40 glasses.

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Question (4)

QN0031811

Four students suggest ways to make the school greener. P – Plant more trees. Q – Throw all waste into one bin. R – Switch off fans when not needed. S – Repair leaking taps. Which suggestion does NOT help make the school greener?

(A) P
(B) Q
(C) R
(D) S

Correct Answer: B

Explanation:

Waste should be separated, not thrown into one bin.

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Question (5)

QN0031812

A classroom has 5 windows. If opening each window reduces the need for one electric light during the day, how many lights can remain switched off?

(A) 2
(B) 3
(C) 4
(D) 5

Correct Answer: D

Explanation:

Each window can replace one light, so 5 lights can remain off.

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Question (6)

QN0031813

Why is a white roof generally cooler than a black roof?

(A) It absorbs more heat.
(B) It reflects most of the Sun's heat.
(C) It produces cool air.
(D) It stores water.

Correct Answer: B

Explanation:

White surfaces reflect sunlight and absorb less heat.

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Question (7)

QN0031814

A school collected 45 kg of waste. 18 kg was wet waste and the rest was dry waste. How much dry waste was collected?

(A) 25 kg
(B) 26 kg
(C) 27 kg
(D) 28 kg

Correct Answer: C

Explanation:

45 − 18 = 27 kg.

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Question (8)

QN0031815

Which situation shows the best behaviour?

(A) Scribbling on desks
(B) Waiting patiently in a queue
(C) Throwing wrappers on the ground
(D) Teasing classmates

Correct Answer: B

Explanation:

Waiting patiently shows respect and discipline.

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Question (9)

QN0031816

A school has 12 dustbins. Only 9 are being used properly. What percentage of dustbins are being used properly?

(A) 50%
(B) 60%
(C) 75%
(D) 90%

Correct Answer: C

Explanation:

9/12 = 3/4 = 75%.

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Question (10)

QN0031817

Which combination will help reduce the temperature around the school?

(A) Cutting trees and painting roofs black
(B) Planting trees and painting roofs white
(C) Closing all windows
(D) Keeping lights on all day

Correct Answer: B

Explanation:

Trees provide shade and white roofs reflect heat.

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Question (1)

A school has 24 classrooms. In 6 classrooms, the lights are left on even though no one is inside. What fraction of the classrooms are wasting electricity?

Explanation:

Link:

Question (2)

Which group should check whether water tanks are clean, covered and taps are leaking?

Explanation:

Link:

Question (3)

A school has 8 leaking taps. Each tap wastes 5 glasses of water every day. How many glasses of water are wasted in one day?

Explanation:

Link:

Question (4)

Four students suggest ways to make the school greener. P – Plant more trees. Q – Throw all waste into one bin. R – Switch off fans when not needed. S – Repair leaking taps. Which suggestion does NOT help make the school greener?

Explanation:

Link:

Question (5)

A classroom has 5 windows. If opening each window reduces the need for one electric light during the day, how many lights can remain switched off?

Explanation:

Link:

Question (6)

Why is a white roof generally cooler than a black roof?

Explanation:

Link:

Question (7)

A school collected 45 kg of waste. 18 kg was wet waste and the rest was dry waste. How much dry waste was collected?

Explanation:

Link:

Question (8)

Which situation shows the best behaviour?

Explanation:

Link:

Question (9)

A school has 12 dustbins. Only 9 are being used properly. What percentage of dustbins are being used properly?

Explanation:

Link:

Question (10)

Which combination will help reduce the temperature around the school?

Explanation:

Link:

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