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Question (1)

QN005633

Which of the following is an essential use of water mentioned in daily life?

(A) Making magnets
(B) Drinking
(C) Generating wind
(D) Producing rocks

Correct Answer: B

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Question (2)

QN005634

What fraction of the Earth's surface is covered by water?

(A) One-third
(B) One-half
(C) Two-thirds
(D) Three-fourths

Correct Answer: C

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Question (3)

QN005635

Most of the water present on Earth is found in:

(A) Rivers and lakes
(B) Underground sources
(C) Oceans and seas
(D) Ice sheets

Correct Answer: C

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Question (4)

QN005636

Water found in oceans and seas is generally:

(A) Freshwater
(B) Distilled water
(C) Saline water
(D) Pure water

Correct Answer: C

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Question (5)

QN005637

Which type of water is suitable for domestic, agricultural and industrial use?

(A) Saline water
(B) Freshwater
(C) Sea water
(D) Ocean water

Correct Answer: B

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Question (6)

QN005638

A region receives 1200 mm of rain annually. If 25% of the rainwater is harvested, how much water is harvested?

(A) 150 mm
(B) 300 mm
(C) 600 mm
(D) 900 mm

Correct Answer: B

Explanation:

25% of 1200 = 300 mm.

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Question (7)

QN005639

Which of the following freshwater sources is easiest to access according to the chapter?

(A) Ice sheets
(B) Underground water
(C) Rivers and ponds
(D) Snow-covered mountains

Correct Answer: C

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Question (8)

QN005640

Water harvesting means:

(A) Purifying river water
(B) Collecting and storing water for later use
(C) Growing crops using water
(D) Transporting water through pipes

Correct Answer: B

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Question (9)

QN005641

A tank stores 800 litres of rainwater. If 150 litres are used, how much water remains?

(A) 650 litres
(B) 700 litres
(C) 750 litres
(D) 950 litres

Correct Answer: A

Explanation:

800 − 150 = 650 litres.

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Question (10)

QN005642

Rainwater harvesting is described in the chapter as:

(A) A new foreign technique
(B) An age-old practice in India
(C) A method used only in cities
(D) A method used only in industries

Correct Answer: B

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Question (1)

Which of the following is an essential use of water mentioned in daily life?

Explanation:

Link:

Question (2)

What fraction of the Earth's surface is covered by water?

Explanation:

Link:

Question (3)

Most of the water present on Earth is found in:

Explanation:

Link:

Question (4)

Water found in oceans and seas is generally:

Explanation:

Link:

Question (5)

Which type of water is suitable for domestic, agricultural and industrial use?

Explanation:

Link:

Question (6)

A region receives 1200 mm of rain annually. If 25% of the rainwater is harvested, how much water is harvested?

Explanation:

Link:

Question (7)

Which of the following freshwater sources is easiest to access according to the chapter?

Explanation:

Link:

Question (8)

Water harvesting means:

Explanation:

Link:

Question (9)

A tank stores 800 litres of rainwater. If 150 litres are used, how much water remains?

Explanation:

Link:

Question (10)

Rainwater harvesting is described in the chapter as:

Explanation:

Link:

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