Pure copper sulphate can be obtained from an impure sample by the process of :(a) evaporation (b) fractional distillation(c) centrifugation (d) crystallisation

Correct Answer: (d) crystallisation

Explanation: Crystallization is the process of cooling a hot concentrated solution of a substance to obtain its crystals in pure form. Copper sulphate can be obtained from an impure sample by crystallisation.