Which of the following methods is best suited for the separation of a mixture containing naphthalene and benzoic acid?

Chromatography

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Sublimation

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Distillation

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Crystallisation

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Solution

The correct option is B Sublimation
In these compounds naphthalene is volatile and benzoic acid is non-volatile due to the formation of dimer via hydrogen bonding (intermolecular). Hence they can be separated by sublimation.

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