Question

5ml of water was taken in a test tube and china dish separately.

These samples were then kept under different conditions as below

• Both the samples are kept under a fan

• Both the samples are kept inside a cupboard

a) State in which case evaporation will be faster? give reasons

b) How will the rate of evaporation change if above activity is

carried out on a rainy day? Justify. ​

Answer 1

Answer:

In both the condition (a) and (b) the temperature 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 less than the rate of evaporation in chinca dish.

(b) Rate of evaporation in test tube less than the rate of evaporation in china dish