1.

The best methof for the separetion of naphthalene and benzoic acid from their mixture is,

Answer»

distillation
sublimation
chromatography
crystallisation

Solution :Among the given compounds naphthelene is volatile but benzoic acid is non-volatile (it forms a dinner). So, the BEST method for their SEPARATION is sublimation, which is APPLICABLE to compounds which can be converted directly into the vapour phase from its SOLID state on heating and back to the solid state on cooling. HENCE it is the most appropriate method.


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