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Question (31)

QN004780

Which state of water has a definite volume but no definite shape?

(A) Solid
(B) Liquid
(C) Gas
(D) Vapour cloud

Correct Answer: B

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Question (32)

QN004781

A container holds 400 mL water. If all of it freezes and is divided equally among 8 moulds, each mould receives

(A) 25 mL
(B) 40 mL
(C) 50 mL
(D) 80 mL

Correct Answer: C

Explanation:

400 ÷ 8 = 50 mL

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Question (33)

QN004782

A student melts 120 g of ice. If 30 g water evaporates later, how much liquid water remains?

(A) 60 g
(B) 75 g
(C) 90 g
(D) 100 g

Correct Answer: C

Explanation:

120 − 30 = 90 g

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Question (34)

QN004783

Which state of water has neither a fixed shape nor a fixed volume?

(A) Ice
(B) Liquid water
(C) Water vapour
(D) Snow

Correct Answer: C

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Question (35)

QN004784

A family uses 2 kg ice blocks. If each block weighs 250 g, how many blocks are used?

(A) 6
(B) 7
(C) 8
(D) 10

Correct Answer: C

Explanation:

2000 ÷ 250 = 8

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Question (36)

QN004785

Which example represents water in the gaseous state?

(A) Ice cube
(B) River water
(C) Water vapour in air
(D) Snowflake

Correct Answer: C

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Question (37)

QN004786

A student records that 45 out of 60 ice cubes melted. What percentage remained unmelted?

(A) 20%
(B) 25%
(C) 30%
(D) 35%

Correct Answer: B

Explanation:

Remaining = 15; (15/60) × 100 = 25%

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Question (38)

QN004787

Why is water important for studying states of matter?

(A) It exists naturally in all three states on Earth
(B) It exists only as a liquid
(C) It never changes state
(D) It is always colourless

Correct Answer: A

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Question (39)

QN004788

A container has 1 litre of water. If 40% freezes, how much remains liquid?

(A) 0.2 L
(B) 0.4 L
(C) 0.6 L
(D) 0.8 L

Correct Answer: C

Explanation:

60% of 1 L = 0.6 L

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Question (40)

QN004789

A student compares ice, water and water vapour. Which statement is correct?

(A) All have fixed shapes
(B) All are different substances
(C) All are forms of the same substance in different states
(D) Only ice is water

Correct Answer: C

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Question (31)

Which state of water has a definite volume but no definite shape?

Explanation:

Link:

Question (32)

A container holds 400 mL water. If all of it freezes and is divided equally among 8 moulds, each mould receives

Explanation:

Link:

Question (33)

A student melts 120 g of ice. If 30 g water evaporates later, how much liquid water remains?

Explanation:

Link:

Question (34)

Which state of water has neither a fixed shape nor a fixed volume?

Explanation:

Link:

Question (35)

A family uses 2 kg ice blocks. If each block weighs 250 g, how many blocks are used?

Explanation:

Link:

Question (36)

Which example represents water in the gaseous state?

Explanation:

Link:

Question (37)

A student records that 45 out of 60 ice cubes melted. What percentage remained unmelted?

Explanation:

Link:

Question (38)

Why is water important for studying states of matter?

Explanation:

Link:

Question (39)

A container has 1 litre of water. If 40% freezes, how much remains liquid?

Explanation:

Link:

Question (40)

A student compares ice, water and water vapour. Which statement is correct?

Explanation:

Link:

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