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Question (21)

QN0010427

If a river is covered by a green blanket over 80% of its surface, what is the most likely consequence?

(A) Easier breathing for fish
(B) Reduced survival of aquatic life
(C) More drinking water quality
(D) Faster river cleaning

Correct Answer: B

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Question (22)

QN0010428

Which household waste is most likely to contribute to water pollution?

(A) Dirty soapy water
(B) Fresh air
(C) Sunlight
(D) Clean sand

Correct Answer: A

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Question (23)

QN0010429

What is the main purpose of Activity 2 in the lesson?

(A) To identify how waste can harm plants, animals and people
(B) To measure river depth
(C) To build a dam
(D) To count fish

Correct Answer: A

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Question (24)

QN0010430

A plastic bag enters a river and blocks sunlight reaching water plants below. This is an example of ________.

(A) Water pollution harming living organisms
(B) Water conservation
(C) Soil formation
(D) Irrigation

Correct Answer: A

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Question (25)

QN0010431

Which of the following is the best example of an eco-friendly choice?

(A) Using products that create less waste
(B) Throwing plastic into rivers
(C) Burning waste near rivers
(D) Dumping chemicals in drains

Correct Answer: A

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Question (26)

QN0010432

A family switches from heavily polluting cleaners to eco-friendly cleaners. What benefit is most directly related to the lesson?

(A) Less harmful waste reaches water bodies
(B) Rivers become longer
(C) More rainfall occurs
(D) Dams become larger

Correct Answer: A

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Question (27)

QN0010433

What is most likely to happen if pollution in a river continues unchecked for many years?

(A) Fish, turtles and birds may disappear gradually
(B) Rivers become mountains
(C) Water becomes sweeter
(D) Rainfall stops completely

Correct Answer: A

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Question (28)

QN0010434

Why is creating less waste considered important?

(A) It reduces pollution at its source
(B) It increases river speed
(C) It changes river direction
(D) It creates more fertilisers

Correct Answer: A

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Question (29)

QN0010435

Which observation from the activity proves that appearance alone cannot judge water quality?

(A) Sugar water looks clear although substances are present
(B) Oil changes colour
(C) Water evaporates quickly
(D) Sugar becomes solid again

Correct Answer: A

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Question (30)

QN0010436

A student sees clear river water and assumes it is safe to drink. Which lesson idea challenges this assumption?

(A) Harmful substances may be hidden in water
(B) Clear water always means pure water
(C) Rivers clean themselves instantly
(D) Fish remove all pollutants

Correct Answer: A

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Question (21)

If a river is covered by a green blanket over 80% of its surface, what is the most likely consequence?

Explanation:

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Question (22)

Which household waste is most likely to contribute to water pollution?

Explanation:

Link:

Question (23)

What is the main purpose of Activity 2 in the lesson?

Explanation:

Link:

Question (24)

A plastic bag enters a river and blocks sunlight reaching water plants below. This is an example of ________.

Explanation:

Link:

Question (25)

Which of the following is the best example of an eco-friendly choice?

Explanation:

Link:

Question (26)

A family switches from heavily polluting cleaners to eco-friendly cleaners. What benefit is most directly related to the lesson?

Explanation:

Link:

Question (27)

What is most likely to happen if pollution in a river continues unchecked for many years?

Explanation:

Link:

Question (28)

Why is creating less waste considered important?

Explanation:

Link:

Question (29)

Which observation from the activity proves that appearance alone cannot judge water quality?

Explanation:

Link:

Question (30)

A student sees clear river water and assumes it is safe to drink. Which lesson idea challenges this assumption?

Explanation:

Link:

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