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Question (11)

QN002521

A syringe filled with air is pressed after closing its nozzle. The plunger moves inward easily because:

(A) Air escapes through the syringe walls
(B) Gas particles have large interparticle spaces
(C) Gas particles are very heavy
(D) Air changes into liquid

Correct Answer: B

Explanation:

Gases can be compressed due to large spaces between particles.

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Question (12)

QN002522

When the same experiment is repeated using water instead of air, the plunger hardly moves because liquids are:

(A) Invisible
(B) Highly compressible
(C) Practically incompressible
(D) Without particles

Correct Answer: C

Explanation:

Liquids cannot be compressed easily.

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Question (13)

QN002523

Which state of matter has particles that can move freely in all directions?

(A) Solid only
(B) Liquid only
(C) Gas only
(D) Solid and liquid

Correct Answer: C

Explanation:

Gas particles move freely in all directions.

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Question (14)

QN002524

Water takes the shape of a container because:

(A) Its particles are fixed
(B) Its particles can move within limited space
(C) It has no particles
(D) Water expands continuously

Correct Answer: B

Explanation:

Liquid particles can move, so liquids take container shape.

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Question (15)

QN002525

A room freshener sprayed in one corner spreads throughout the room mainly due to:

(A) Melting
(B) Condensation
(C) Continuous motion of gas particles
(D) Gravitational force

Correct Answer: C

Explanation:

Gas particles are always moving and spreading.

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Question (16)

QN002526

Which of the following correctly compares solids and liquids?

(A) Both have fixed shape
(B) Solids have fixed volume; liquids do not
(C) Solids have stronger interparticle attraction than liquids
(D) Liquids have no particles

Correct Answer: C

Explanation:

Solids have stronger attractive forces between particles.

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Question (17)

QN002527

Sand does not dissolve in water because:

(A) Sand particles are too large to enter interparticle spaces
(B) Sand has no particles
(C) Water particles cannot separate sand particles
(D) Sand is lighter than water

Correct Answer: C

Explanation:

Water cannot pull apart sand particles.

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Question (18)

QN002528

A student heats a solid continuously. Which change occurs first?

(A) Particles stop vibrating
(B) Interparticle attraction weakens
(C) Particles disappear
(D) Volume becomes zero

Correct Answer: B

Explanation:

Heating weakens interparticle attraction.

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Question (19)

QN002529

Which of the following has the least interparticle spacing?

(A) Steam
(B) Water
(C) Oxygen gas
(D) Aluminium block

Correct Answer: D

Explanation:

Solids have minimum interparticle spacing.

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Question (20)

QN002530

During boiling, vapour formation occurs:

(A) Only at the surface
(B) Only at the bottom
(C) Throughout the liquid
(D) Outside the liquid

Correct Answer: C

Explanation:

Boiling produces vapour throughout the liquid.

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Question (11)

A syringe filled with air is pressed after closing its nozzle. The plunger moves inward easily because:

Explanation:

Link:

Question (12)

When the same experiment is repeated using water instead of air, the plunger hardly moves because liquids are:

Explanation:

Link:

Question (13)

Which state of matter has particles that can move freely in all directions?

Explanation:

Link:

Question (14)

Water takes the shape of a container because:

Explanation:

Link:

Question (15)

A room freshener sprayed in one corner spreads throughout the room mainly due to:

Explanation:

Link:

Question (16)

Which of the following correctly compares solids and liquids?

Explanation:

Link:

Question (17)

Sand does not dissolve in water because:

Explanation:

Link:

Question (18)

A student heats a solid continuously. Which change occurs first?

Explanation:

Link:

Question (19)

Which of the following has the least interparticle spacing?

Explanation:

Link:

Question (20)

During boiling, vapour formation occurs:

Explanation:

Link:

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