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Question (1)

QN004670

What happened to the water puddles in the playground by evening?

(A) They turned into ice
(B) Some of the water disappeared
(C) The water became soil
(D) The water changed colour

Correct Answer: B

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Question (2)

QN004671

Which idea did Aavi initially suggest about the disappearance of water from puddles?

(A) Water evaporated into air
(B) Water became steam
(C) Water was absorbed by the soil
(D) Water changed into ice

Correct Answer: C

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Question (3)

QN004672

In Activity 8.2, water was placed on a steel plate mainly to check whether water

(A) changes colour
(B) seeps through steel
(C) freezes quickly
(D) becomes heavier

Correct Answer: B

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Question (4)

QN004673

After the water on the steel plate disappeared, what was concluded?

(A) Steel absorbed the water
(B) Water changed into water vapour
(C) Water became solid
(D) Water turned into air permanently

Correct Answer: B

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Question (5)

QN004674

The gaseous state of water is called

(A) mist
(B) fog
(C) water vapour
(D) dew

Correct Answer: C

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Question (6)

QN004675

The process of conversion of water into its vapour state is called

(A) condensation
(B) freezing
(C) melting
(D) evaporation

Correct Answer: D

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Question (7)

QN004676

Which of the following is the exact definition of evaporation?

(A) Conversion of water vapour into water
(B) Conversion of water into its vapour state
(C) Conversion of ice into water
(D) Conversion of steam into water droplets

Correct Answer: B

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Question (8)

QN004677

Which observation supports the idea that water does not seep through a steel plate?

(A) The plate becomes heavier
(B) Water changes colour
(C) Water disappears while the other side remains dry
(D) The plate becomes colder

Correct Answer: C

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Question (9)

QN004678

Water sprinkled on a hot dosa pan disappears mainly because it

(A) freezes instantly
(B) evaporates quickly
(C) seeps into the pan
(D) changes into soil

Correct Answer: B

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Question (10)

QN004679

Steam is actually

(A) smoke
(B) hot air
(C) water vapour with tiny water droplets visible
(D) oxygen gas

Correct Answer: C

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Question (1)

What happened to the water puddles in the playground by evening?

Explanation:

Link:

Question (2)

Which idea did Aavi initially suggest about the disappearance of water from puddles?

Explanation:

Link:

Question (3)

In Activity 8.2, water was placed on a steel plate mainly to check whether water

Explanation:

Link:

Question (4)

After the water on the steel plate disappeared, what was concluded?

Explanation:

Link:

Question (5)

The gaseous state of water is called

Explanation:

Link:

Question (6)

The process of conversion of water into its vapour state is called

Explanation:

Link:

Question (7)

Which of the following is the exact definition of evaporation?

Explanation:

Link:

Question (8)

Which observation supports the idea that water does not seep through a steel plate?

Explanation:

Link:

Question (9)

Water sprinkled on a hot dosa pan disappears mainly because it

Explanation:

Link:

Question (10)

Steam is actually

Explanation:

Link:

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