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JEE Main202621 January 2026Evening ShiftChemistryAldehydes and KetonesActual

Match List - I with List - II. array l List - I & List - II Reagents & Reaction Name (Involving aldehydes) A. H ₂, Pd - BaSO ₄ & I. Etard Reaction B. SnCl ₂, HCl & II. Rosenmund Reduction C. CrO ₂ Cl ₂, CS ₂ & III. Gatterman - Koch Reaction D. CO , HCl , Anhyd. AlCl ₃ & IV. Stephen Reaction array Choose the correct answer from the options given below :

Options

  1. AA-IV, B-III, C-I, D-II
  2. BA-II, B-IV, C-I, D-III
  3. CA-IV, B-I, C-II, D-III
  4. DA-II, B-III, C-IV, D-I

Correct answer

B. A-II, B-IV, C-I, D-III

Step-by-step solution

Matching reagents with aldehyde reaction types: A (H2, Pd-BaSO4) is the Lindlar/Rosenmund catalyst used in Rosenmund Reduction to convert acyl chlorides to aldehydes, matching with II. B (SnCl2, HCl) is used in Stephen Reaction where nitriles are converted to aldehydes via imine intermediate, matching with IV. C (CrO2Cl2, CS2) is Jones-like reagent used in Etard Reaction for oxidizing methyl groups on aromatic rings to aldehydes, matching with I. D (CO, HCl, Anhyd. AlCl3) is the Gatterman-Koch Reaction which direct

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