Question

what is the principle of sublmation

Answer 1

The process in which salts or other substances get dissolved in water are  called sublimable salt eg. Ammonia salt

Answer 2

Sublimation is a process in which a solid turns directly into gas without passing into liquid state. It works on the principle that solids have a weak intermolecular force hence a higher vapour pressure which converts it into directly vapour state. It is applicable in forensic science, purification of compounds and frost-free refrigeration.