Question

3. Mention a change which is always (a) desirable (b) undesirable (c) periodic​

Answer 1

a) desirable: changes that are useful to a man are

desirable changes.

Eg: change of milk into curd.

b) undesirable: changes that brings about

destruction is an undesirable changes.

Eg: floods and epidemics.

c) periodic: changes that are repeated at regular

intervals of time.

Eg: change of day and night.