Multiple choice

The process of purification of a substance which involves evaporation without melting, can be carried out by

  1. crystallisation

  2. distillation

  3. steam distillation

  4. sublimation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sublimation (phase transition) is the change from solid to gas without entering liquid phase. Substances which undergo evaporation without going into liquid phase are purified by this method.

Keep practicing — related questions