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MCQMediumJEE Main 2025 · 23 January, Shift 2Aryl Halides

Chemistry Question from JEE Main 2025 · 23 January, Shift 2

Identify the products [A] and [B] respectively in the following reaction: C6H5Cl→(ii) H+(i) NaOH, 623 K, 300 atm[A]→H2SO4Na2Cr2O7[B]\text{C}_6\text{H}_5\text{Cl} \xrightarrow[\text{(ii) H}^+]{\text{(i) NaOH, 623 K, 300 atm}} [A] \xrightarrow[\text{H}_2\text{SO}_4]{\text{Na}_2\text{Cr}_2\text{O}_7} [B]

Reaction scheme and four structural options showing chlorobenzene conversion under sodium hydroxide at 623 K and 300 atm, followed by sodium dichromate in sulfuric acid, with candidate structures for products A and B.
  • A
    Option 1 shows A as phenol and B as sodium phenoxide with aromatic ring structures and attached OH or O minus Na plus groups.
  • B
    Option 2 shows A as benzene and B as phenol with aromatic ring structures, one unsubstituted and one bearing an OH group.
  • C
    Option 3 shows A as phenol and B as para benzoquinone with one aromatic ring bearing OH and another ring bearing two carbonyl groups.
  • D
    Option 4 shows A as benzene and B as cyclohexadienone like structure with one carbonyl group on a six membered ring.

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