`p-`nitrophenol and `o-`nitrophenol are separated by

Options

A. Crystallisation
B. Fractional crystallisation
C. Distillation
D. Steam distillation

Answer

D

Explanation

o-nitro phenol the intramolecular hydrogen bonding, while p-nitrophenol has intermolecular hydrogen bonding (comparatively stronger). Due to this reason, the boiling point of o-nitrophenol is found quite less than that of p-nitrophenol. Hence, o-nitrophenol is steam volatile and can be separated from p-nitrophenol by steam distillation.