Question

5ml. of water was taken in a test tube and China dish respectively. These samples were then kept under different conditions as below. (a) Both the samples are kept under a fan (b) Both the samples are kept inside the cupboard State how the rate of evaporation is affected.

Answer 1

In both the conditions (a) and (b), temp. is same.
Therefore, the rate of evaporation will be affected by surface area of water which is in contact of atmosphere.

(a) Rate of evaporation in test tube < Rate of evaporation in China dish.
(b) same as ('a')