Question

Sublimation does not require heating. Justify the statement giving 1 example.

Answer 1

Yes it is true that sublimation does not require heating . Sublimation is a process of conversion of solid into vapor state and vapour into solid state without coming in liquid state.
In this process no heating is required , we can justify this statement by :
When we keep napthalene balls in Wollen clothes to protect them from bacterias then after sometime we could see that there is no napthalene ball let in that woollen cloth . This happens because the napthalene balls goes under the process of sublimation by directly converting from solid to vapour state. And this happens not because of heat it is a natural phenomenon as it gains the heat from the surface .

Answer 2

Answer:

Sublimation does not require heating because it can take place at normal room temperature.