Question
Chemistry Question on Change of state
On heating, some solid substances change from solid to vapour state without passing through liquid state. The technique used for the purification of such solid substances based on the above principle is known as
A
Crystallization
B
Sublimation
C
Distillation
D
Chromatography
Answer
Sublimation
Explanation
Solution
1. Sublimation is the direct transition from solid to vapor, bypassing the liquid phase.
2. Examples include iodine and naphthalene.