Question : In which process is a solid substance volatilised by heating and the vapour is condensed back to the solid at a cold surface?
Option 1: Chromatography
Option 2: Filtration
Option 3: Distillation
Option 4: Sublimation
Correct Answer: Sublimation
Solution : The correct answer is Sublimation.
This refers to the process wherein a substance transitions straight from a solid to a gaseous state without first becoming a liquid. Ammonium chloride , camphor , iodine and naphthalene are a few examples of sublimate substances. Sublimation does not occur in common salt; common salt is sometimes referred to as sodium chloride.
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