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JEE Main · 2025 · 23 Jan 2025 · Shift 2 · Alcohols Phenols and Ethers

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Identify the products [A] and [B], respectively in the following reaction :

(see structure)
  1. (A)[A] (see structure) , [B] (see structure)
    Structure A
    A
    Structure B
    B
  2. (B)[A] (see structure) , [B] (see structure)
    Structure A
    A
    Structure B
    B
  3. (C)[A] (see structure) , [B] (see structure)
    Structure A
    A
    Structure B
    B
    ✓ Correct
  4. (D)[A] (see structure) , [B] (see structure)
    Structure A
    A
    Structure B
    B

Answer: (C)

Solution

Chlorobenzene fused with NaOH at 623 K/300 atm and then acidified regenerates the free phenol — this is product [A]. Oxidising phenol with hydroxylates and then oxidises the para position, converting both oxygens of the ring into carbonyls and giving para-benzoquinone (cyclohexa-2,5-diene-1,4-dione) as [B]. So [A] is phenol and [B] is para-benzoquinone.

JEE Main · 2025 · 23 Jan 2025 · Shift 2 · Single correct option

Practise more: all JEE Main PYQs on Alcohols Phenols and Ethers →

More JEE Main questions on Alcohols Phenols and Ethers

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    Statement II …
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  2. 3,3-Dimethyl-2-butanol cannot be prepared by:
    A.
    B.
    C.
    D.
    E.
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  4. Consider the following two reactions A and B .
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    (B) (see structure)

    Numerical value of [molar mass of molar mass of y ] is ______。
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  5. From the following, how many compounds contain at least one secondary alcohol?
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  6. Consider the following reaction sequence

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