JEE Main & Advanced Chemistry Organic Chemistry: Some Basic Principles & Techniques Question Bank Chemical analysis of organic compounds

  • question_answer p-nitrophenol and o-nitrophenol are separated by [BVP 2004]

    A) Crystallisation

    B) Fractional crystallisation

    C) Distillation

    D) Steam distillation

    Correct Answer: D

    Solution :

    o-nitro phenol has intra molecular hydrogen bonding, while p-nitrophenol has intermolecular hydrogen bonding (comparitively 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.


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