Question

When a perfume bottle is opened, some liquid changes to gas and the fragrance spreads around the room. Which sentence explains this?
A) Gases do not have a definite volume.
B) The particles of gases are closely packed.
C) The force of attraction between particles in gases is very high.
D) Gases are not matter.

Answer 1

Answer: Option (a) is the correct answer.

Explanation:

It is known that molecules of a gas are held by weak Vander waal forces. As a result, they are able to move freely from one place to another. Hence, they are able to spread or diffuse readily into the atmosphere.

Also, gases do not have a definite volume. Whereas molecules of a liquid are held together by slightly strong forces as compared to gases. As a result, liquids do not have a fixed shape and they occupy the volume of a container in which they are kept.

Therefore, we can conclude that the sentence gases do not have a definite volume, explains that when a perfume bottle is opened, some liquid changes to gas and the fragrance spreads around the room.

Answer 2

The correct answer is option a