Evaporation MCQ (Multiple Choice Questions) PDF Download

From surroundings, evaporation requires

1. kinetic energy
2. thermal energy
3. potential energy
4. chemical energy

The difference between boiling and evaporation is that

1. evaporation can occur at any temperature
2. boiling can occur at any temperature
3. evaporation can not occur at any temperature
4. none of the above

In the process of evaporation, thermal energy is supplied by

1. the surroundings
2. an energy source
3. both A and B
4. none of the above

The rate of evaporation increases when temperature

1. is zero
2. is negative
3. decreases
4. increases

The specific latent heat of vaporization is 2.25 × 10⁶ J kg^-1.If a man generates 800 J of heat every second by running, and half heat is lost from the body by evaporation, what is the mass of water evaporated in a 2 hour running?

1. 2 kg
2. 1.28 kg
3. 3.2 kg
4. 1.67 kg