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Question

Separation of o- nitrophenol from the mixture of o - and p - nitrophenol can be achieved by:

A
sublimation.
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B
steam distillation.
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C
crystallisation.
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D
fractional distillation.
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Solution

The correct options are
A steam distillation.
D fractional distillation.
In o-nitro phenol, there is intra-molecular H-bonding,
This is because of the polar nature of O-H bond that can lead to the formation H-bonds inside the same molecule.
This intramolecular H-bonding results in increased solubility. it is separated by distillation process.
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