MCQ : A mixture of common salt (NaCl) and NH4Cl(s) can be separated by

Question

A mixture of common salt (NaCl) and NH4Cl(s) can be separated by

1. magnetic separation
2. mechanical picking
3. sublimation
4. filtration

Answer

sublimation

Explanation

The mixture of common salt (NaCl) and NH₄Cl(s) can be separated by sublimation since NH₄Cl sublimes directly from solid to gas leaving NaCl behind.