Question

Differentiate between boiling and evaporation.

Answer 1

Boiling or Vaporization:

• The process due to which a liquid changes into a gaseous state by absorbing heat energy is called boiling.

Evaporation:

• The phenomenon of change of a liquid into vapors at any temperature below its boiling point is called evaporation.

Differentiate between boiling and evaporation:

Boiling	Evaporation
1. Boiling is a bulk phenomenon.	1. Evaporation is a surface phenomenon.
2. Boiling occurs at boiling point (B.P.) only.	2. Evaporation occurs at all temperatures below boiling point (B.P.).
3. The rate of boiling does not depend upon the surface area, wind speed, and humidity.	3. The rate of evaporation depends upon the surface area of the liquid, humidity temperature & wind speed