Question

Write 3 advantages of crystallisation over evaporation.

Answer 1

The advantages of crystallisation over evaporation because:

Solids like sugar get charred on heating to dryness during evaporation. There is no such problem in crystallisation .

The soluble impurities do not get removed in the process of evaporation but such impurities get removed in crystallisation.

Crystallisation is used for obtaining a pure solid substance from impure sample

Answer 2

Advantages

Fine crystals of the substance are obtained

Solid which decompose on heating can safely purified