Q1. The most suitable method of separation of 1 : 1 mixture of ortho and para-nitrophenols is :
(1) Steam distillatio (2) Sublimation (3) Chromatography (4) Crystallisation
Explanation: - In O-nitrophenol intra molecular H-Bond present. So Bpt is low where as in p-nitrophenol molecules are associated by inter molecular H-Bond. So Bpt is high, so o & p-nitrophenol seperated by steam distillation method.