Question

Which statement is correct about a sample of liquid water?

Answer 1

When a liquid is heated, it starts evaporating. So, more pressure is exerted because more molecules converts to vapour state.

So, the vapour pressure increases with the increase in temperature.

Option C is correct.

Answer 2

A sample of liquid water has a definite volume but not a definite shape.

• The particles of a sample of liquid water have sufficient amount of energy to f the particles of a substance have enough energy to overcome the intermolecular bonding present between them at some extent.
• As a result the particles of a sample of liquid can shift their position around one another even after remaining in contact.
• As the particles of liquid water shift their position around each other  but they are unable to move freely due to which the sample of liquid water does not have a definite shape rather they can take the shape of the container in which the sample is filled.
• As, the particles still remains in contact even after moving that ultimately signifies that liquid water has a definite volume.

Hence, the sample of a liquid has a definite volume but the sample has no definite shape.