Question

Which among the following methods is most suitable to separate a mixture of salt and ammonium chloride?

• A. Filtration
• B. Sublimation
• C. Centrifugation
• D. Separating funnel

Answer 1

The correct option is B

Sublimation

When a mixture of salt and ammonium chloride are heated together, ammonium chloride sublimes on heating while sodium chloride (NaCl) settles down in the beaker. Filtration filters smaller particles from larger particles by the use of filter paper. Centrifugation separates lighter particles from heavier particles. Separating funnel is used for separating immiscible liquids. Hence they are not suitable.