State the various factors which affect evaporation.

Explanation

The evaporation of a liquid depends upon the following factors :
(a) Temperature: The rate of evaporation increases on increasing the temperature of the liquid. At higher temperature the average speed of particles is increased and it is easier for the particles to escape from the surface of the liquid.
(b) Surface area : Larger the surface area of a liquid, higher is its rate of evaporation. More particles from the surface can evaporate if the surface is large.
(c) Wind velocity: The rate of evaporation increases with increasing wind speed. The wind carries away the particles of vapour more rapidly.
(d) Humidity of air : The rate of evaporation is high when humidity is low. Evaporation is faster in dry air.
(e) Nature of the liquid : Lower the boiling point of a liquid, higher is its rate of evaporation.