Question

is the most suitable method to separate a mixture of salt and ammonium chloride.

• A. Filtration
• B. Sublimation
• C. Centrifugation

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) is left as the residue.

- Filtration separates 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.