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MCQMediumJEE Main 2025 · 3 April, Shift 2Electrophilic Substitution in Benzene

Chemistry Question from JEE Main 2025 · 3 April, Shift 2

In the following series of reactions identify the major products A and B respectively.

Reaction scheme starting from bromobenzene, treated with sulfur trioxide and sulfuric acid to give major product A, followed by bromine and iron to give major product B.
  • A
    Option A shows bromobenzene sulfonation and bromination products with sulfonic acid and bromine substituents at adjacent positions for A and B.
  • B
    Option B shows A as para-bromobenzenesulfonic acid and B as 1,2-dibromo-4-benzenesulfonic acid with substituents para sulfonic acid and ortho bromination.
  • C
    Option C: A is 2-bromobenzenesulfonic acid, with the sulfonic acid group ortho to bromine; B is 2,4-dibromobenzenesulfonic acid.
  • D
    Option D: A is 4-bromobenzenesulfonic acid, with the sulfonic acid group para to bromine; B carries a second bromine meta to the sulfonic acid group.

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