Quiz- Latent heat

Different solids have ___________melting points.

• different

• Same

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

• Melting

• Boiling

• Condensation

• Freezing

The word Latent means

• mysterious.

• private.

• Hidden

• unknown.

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.

• Latent heat of vaporisation

• Latent heat of fusion

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

• Force

• intermolecular

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

• energy

• food

• chlorophyll

• oxygen

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

• force of attraction

• space

• temperature

• motion of the particle

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

• minimum

• maximum

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

• gas

• liquid

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

• Boiling

• Condensation

• Melting

• Vaporization