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Quiz- Latent heat

Total questions: 10

Worksheet time: 10mins

Name
Class
Date
1.

Different solids have ___________melting points.

a)

different

b)

Same

2.

The temperature at which a liquid boils and changes rapidly into a gas at a atmospheric pressure

a)

Melting

b)

Boiling

c)

Condensation

d)

Freezing

3.

The word Latent means

a)

mysterious.

b)

private.

c)

Hidden

d)

unknown.

4.

The __________________ of a liquid is the quantity of heat in joules required to convert 1 kilogram of the liquid (at its boiling point) to vapour or gas, without any change in temperature.

a)

Latent heat of vaporisation

b)

Latent heat of fusion

5.

Higher the melting point of a solid substance, greater will be the __________________ of attraction between its particles.

a)

Force

b)

intermolecular

6.

The aquatic plants use the dissolved carbon dioxide for preparing __________________ by photosynthesis and aquatic animals use the dissolved oxygen of water for breathing.

a)

energy

b)

food

c)

chlorophyll

d)

oxygen

7.

Latent heat does not raise (or increase) the __________________.

a)

force of attraction

b)

space

c)

temperature

d)

motion of the particle

8.

1)the movement of particles is the __________________ in solids, more in liquids and the maximum in gases.

a)

minimum

b)

maximum

9.

The process of changing a __________________ into a solid by cooling is called freezing.

a)

gas

b)

liquid

10.

The process in which a liquid substance changes into a gas rapidly on heating, is called _________

a)

Boiling

b)

Condensation

c)

Melting

d)

Vaporization