Question

The most suitable method of separation of 1 : 1 mixture of ortho and para-nitrophenols is

(a) chromatography 

(b) crystallisation

(c) steam distillation 

(d) sublimation.

Answer 1

The correct option is: (c) steam distillation 

Explanation:

The o- and p-nitrophenols are separated by steam distillation since o-isomer is steam volatile due to intramolecular H-bonding while p-isomer is not steam volatile due to association of molecules by intermolecular H-bonding.