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MHT CET202416 May 2024Morning ShiftChemistryAlcohols Phenols and EthersActual

Which among the following has the highest melting point?

Options

  1. APhenol
  2. Bp-Nitrophenol
  3. Cp-Cresol
  4. Do-Nitrophenol

Correct answer

B. p-Nitrophenol

Step-by-step solution

Due to intramolecular hydrogen bonding in ortho-isomer, the molecule remains in isolated state and it has a lower melting point. In p-Cresol, non polar - CH ₃ group is present which does not participate in H -bonding. Due to effective intermolecular hydrogen bonding para-isomer remains in associated state and so p -nitrophenol has highest melting point.

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