Question

Q8.B). Why we should use crystallisation method for purification of salts,
instead of evaporation?​

Answer 1

Answer:

Crystallisation technique is better than simple evaporation technique as-

• Some solids decompose or some, like sugar, may get charred on heating to dryness.
• Some impurities may remain dissolved in the solution even after filtration. In evaporation these contaminate the solid.