Question

Why is crystallisation considerd to be a better technique than evaporation?

Answer 1

in crystallisation both the constituents are retained, unlike evaporation.

Answer 2

Why crystalization is better than evaporation?

1. It occurs on the entire surface.
2. we get solid in the pure crystallized form.
3. The soluble impurities get removed in this process.
4. It doesn't require very high temperature conditions.