Which technique is most effective for separating a 1:1 mixture of ortho-nitrophenol and para-nitrophenol?

Impure glycerine can be purified by

Some organic compounds are purified by distillation at low pressure because the compounds are

Vaccum distillation is used to purify liquids which

Which purification method exploits the difference in boiling points to separate a liquid metal from its impurities?

A mixture of two organic compounds $A$ and $B$ can be separated by (B. P of $A = {80^0}C$, B. P of $B = {110^0}C$)

A liquid decomposes at its normal boiling point. It can be purified by

Vaccum distillation is used to purify liquids which

Aniline is separated by:

Fractional distillation is a process by which the separation of different fractions from mixture of solution is carried by making use of the following property of the fractions

The best method to separate the mixture of $ortho -$ and $- para$ nitrophenol (1:1) is