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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.
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