Question

A mixture of sand and NH₄Cl can be separated by the _____ method

Answer 1

Sublimation: It is a process in which a substance will change its state from solid to gas directly. No intermediate state is formed in this type of process.

For example, Camphor, ammonium chloride, etc.

In the mixture of sand and NH₄Cl (ammonium chloride), NH₄Cl is a compound that can undergo sublimation.

• When heat is provided to the mixture ammonium chloride will get sublimate. I.e. it gets converted into vapours leaving behind the sand.

Therefore, A mixture of sand and NH₄Cl can be separated by the sublimation method