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Q.

The following step is not involved in the preparation of phenacetin from p - nitrophenol.

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a

Reduction

b

Hydrolysis

c

Acetylation

d

Ethylation

answer is A.

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Detailed Solution

  • Ethylation is not involved in the preparation of phenacetin from p-nitrophenol. 
  • The synthesis of phenacetin from p-nitrophenol involves a series of chemical reactions, including reduction, acetylation, and crystallization, but ethylation is not one of them.
  • Ethylation refers to the process of introducing an ethyl group (-C2H5) into a molecule, typically through the use of an ethylating agent like ethyl bromide or ethyl chloride. 
  • This process is not used in the preparation of phenacetin from p-nitrophenol and is not relevant to this synthesis.
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