Latent Heat Multiple Choice Questions (MCQs) PDF Download - 36

During the evaporation process, the thermal energy is used from

1. the surface of the liquid
2. the surroundings
3. the bottom through the base
4. the whole liquid

A car covers a distance of 5 km in 5 mins, its average speed is equal to

1. 1 km ⁄ h
2. 25 km ⁄ h
3. 60 km ⁄ h
4. None of the above

Melting is the change of state

1. from solid to liquid with change in temperature of 25 °C
2. from liquid to gas with change in temperature of 75 °C
3. from solid to liquid without change in temperature
4. from liquid to gas without change in temperature

With respect to heat transfer through conduction, which of the following inequalities place solids', 'liquids' and 'gases' in the right order?

1. Solids < liquids < gases
2. Solids < gases < liquids
3. Solids > gases > liquids
4. Solids > liquids > gases

The state of equilibrium is when

1. there is no opposing force
2. there is no force acting on an object
3. the object is moving in uniform speed
4. B and C both