Vapour is said to be saturated on top of an enclosed liquid if ______?

A. The rate of condensation is greater than that of vapourization
B. The rate of condensation is equal to that of vapourization
C. There is neither condensation nor vaporization of the liquid
D. The rate of condensation is less than that of vaporization

Correct Answer:

Option B – The rate of condensation is equal to that of vapourization