Question

A mixture of camphor and salt can be separated by the process of ___.

• A. Centrifugation
• B. Distillation
• C. Sedimentation
• D. Sublimation

Answer 1

Answer: (D)

The explanation for the correct option

Option(D) Sublimation

• The transition of the substance directly from solid to gas phase, without passing through the intermediate liquid phase is called sublimation.

• Camphor is a solid that sublimes. When a mixture of camphor and salt is heated in a beaker, the camphor changes from solid to vapor directly and camphor crystals can again be obtained by cooling camphor vapors. In this way, a mixture of camphor and salt is separated.

The explanation for the incorrect option

(A) Centrifugation-Centrifugation is a method of separating molecules having different densities by spinning them in solution around an axis (in a centrifuge rotor) at a high speed

(B) Distillation- It is the process involving the conversion of a liquid into a vapor that is subsequently condensed back to liquid form

(C) Sedimentation- Sedimentation is the deposition of sediments which results in the formation of sedimentary rock

Hence, Option(D) Sublimation is the process by which a mixture of camphor and salt can be separated