Question

Differentiate among sublimation, evaporation and boiling.

Answer 1

Sublimation	Evaporation	Boiling
Sublimation is a process of conversion of solid directly into gas.	Evaporation is a process of conversion of liquid into vapour at any temperature.	Boiling is a process of conversion of liquid into vapour at boiling point.
It is the phase transition from solid to gas whereas	It is the phase transition from liquid to gas.	It is the phase transition from liquid to gas.
Solid phase is the initial phase in sublimation.	Liquid phase is the initial phase in evaporation.	Liquid phase is the initial phase in boiling.
It occurs at pressure and temperature below a substance triple point.	It is surface phenomenon and increases its rate when surface area is increased.	It is not affected by parameters such as temperature, surface area.
Examples of substances that undergo sublimation are ammonium chloride, naphthalene, iodine, and camphor.	For example, common salt is obtained from sea water by evaporation, clothes get dried under the sun by evaporation.	For example, changing water to steam.