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The best method for the separation of naphthalene and benzoic acid from their

The best method for the separation of naphthalene and benzoic acid from their mixture is

Options

(a) distillation
(b) sublimation
(c) chromatography
(d) crystallisation

Correct Answer:

sublimation

Explanation:

Sublimation method is used for those organic substances which pass directly from solid to vapour state on heating and vice-versa on cooling.e.g.benzoic acid, naphthalene,camphor,anthracene, etc.Naphthalene is volatile and benzoic acid is nonvolatile due to the formation of the dimer.

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