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ChemistryJEE Main 22 Jan 2026, Shift 2·Q20·MCQ·Moderate

Hydrocarbons · Alkyne formation and hydration

The dibromo compound [P] (molecular formula : CX9HX10BrX2\ce{C9H10Br2}) when heated with excess sodamide followed by treatment with dilute HCl gives [Q]. On warming [Q] with mercuric sulphate and dilute sulphuric acid yields [R] which gives positive Iodoform test but negative Tollen's test. The compound [P] is :
  1. (1)
  2. (2)
  3. (3)
  4. (4)
We corrected a printing error in the original paper

Source printed “dilute sulphuric acid yield [R]”.

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