The rate of evaporation decreases with increase in
(c) Humidity
The process of change of liquid state into vapour state even below its boiling point is called as evaporation.
Explanation for correct option:
(c) Humidity: The amount of water vapours present in air is called humidity.
When the humidity of air is high, then the rate of evaporation is low and water evaporates very slowly.
Explanation for incorrect option
(a) Surface area: The process of evaporation is a surface phenomena which means that only those particles of the liquid
change into vapours which are present on its surface.
(b) Temperature : The rate of evaporation of a liquid increases with the increase in temperature.
(d) Speed of Wind : The rate of evaporation of a liquid increases with increase in the speed of the wind.
The rate of evaporation decreases with increase in : (c) Humidity