Question

give an example of sublimation process

Answer 1

Sublimation is a type of phase transition, or a change in a state of matter, just like melting, freezing, and evaporation. Through sublimation, a substance changes from a solid to a gas without ever passing through a liquid phase. Dry ice, solid CO2, provides a common example of sublimation

Answer 2

Camphor on leaving it open it disappears an example for sublimation
Also
Napthalene balls used to kill cockroaches disappear on sitting