Question

How can we separate a mixture of sand and potash alum

Answer 1

A mixture of Potash alum and sand can be separated by using the method of sublimation. Potash alum is a sublimable substance while sand is not. After sublimation, the vapors can be collected and condensed back to solid state.

Answer 2

First we mix water and then we do filteration and at last alum is separated by crystallisation.