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CBSE Class 9 Answered

List two ways in which crystallisation technique is better than simple evaporation technique.
Asked by Topperlearning User | 08 May, 2014, 08:59: AM
answered-by-expert Expert Answer

Crystallisation technique is better than simple evaporation because:

1. Some solids decompose or get charred ( Eg.Sugar) on heating to dryness during evaporation. There is no such problem in crystallization.
2. Some impurities may remain dissolved in the solution even after filtration which may contaminate the solid on evaporation. But such impurities get removed in crystallization.

Answered by | 08 May, 2014, 10:59: AM

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