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Q.

Aniline is oxidized with K2Cr2O7 / H2SO4. The product formed is _______

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a

Nitrosobenzene

b

Nitrobenzene

c

p–benzoquinone

d

Phenyl hydrozylamine

answer is B.

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Detailed Solution

Answer: The product formed is para-benzoquinone (p-benzoquinone).

Explanation:

  • Aniline (C6H5NH2) undergoes oxidation with acidified potassium dichromate.
  • During the reaction, the amino group (-NH2) is converted into carbonyl groups (=O) at the para positions of the benzene ring.
  • This results in the formation of para-benzoquinone (C6H4O2), a benzene ring with two oppositely located carbonyl functional groups.

Product structure: Benzene ring with two ketone groups at the para positions.

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