Question

Write a method to separate a mixture of sand and potash alum.

Answer 1

The method used for separating potash alum and sand from a mixture is called as Sublimation. It is a method used for separating soluble solid substances from insoluble substances by using a specific solvent.

Potash alum or Potassium Aluminum Sulfate is capable of dissolving in water, but sand does not. Therefore, the mixture is mixed with water for separation of substances. The sand particles settle down and the potash alum dissolves in water.