Question

Common salt can be separated from the sand by

• A. distillation
• B. fractional distillation
• C. using water as a solvent
• D. using a separating funnel

Answer 1

The correct option is C

using water as a solvent

Common salt $(\mathrm{NaCl})$ is an ionic compound that can easily be dissolved into water (${\mathrm{H}}_2\mathrm{O}$) while sand cannot dissolve in water.

So the common salt can be separated from sand by using water as a solvent and, then, evaporating the water from the mixture to recover the salt.

Therefore option c using water as a solvent is the correct answer.