Latent Heat MCQ (Multiple Choice Questions) PDF Download

The energy released or absorbed during a change of state is known as

1. fusion
2. kinetic energy
3. thermal heat
4. latent heat

The unit of specific latent heat of fusion(l_v) is

1. Joule
2. J Kg^-1
3. kg m^-3
4. Watt

The unit of latent heat of fusion(L_v) is

1. kg m^-3
2. Watt
3. Joule
4. Newton

A jet of steam at 150 °C is directed at a large block of ice for some time at 0 °C. Some steam condenses to form water and some ice is melted. The condensed steam forms 0.6 kg of water at 0 °C. The specific latent heat of water is 2200 kJ kg^-1. What is the thermal energy given out by this mass of steam in changing to water at 100 °C?

1. 1320 kJ
2. 1150 Kj
3. 2020 kJ
4. 3666 kJ

The unit of specific latent heat of fusion(l_f) is

1. Joule
2. J Kg^-1
3. kg m^-3
4. Watt