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JEE Main levelOne or more correct optionsDifficulty 2 of 3ap118

Which of the following reactions of phenol are correctly stated? (Select all that apply.)

  1. APhenol heated with zinc dust gives benzene.
  2. BPhenol heated with ethanoic acid and a few drops of conc. is the standard method of making phenyl ethanoate in high yield, better than using ethanoic anhydride.
  3. CPhenol with gives 1,4-benzoquinone.
  4. DPhenol with in at low temperature gives mainly 4-bromophenol.

Answer: A, C, D

Bromination in a non-polar solvent at low temperature stops at monobromination with para major. Zn dust reduces phenol to benzene by removing oxygen, and chromic oxidation gives p-benzoquinone. Phenols are esterified by acid chlorides or anhydrides, not efficiently by carboxylic acids, so the last statement is false.
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