List two ways in which crystallisation technique is better than simple evaporation technique.
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.
You have rated this answer /10