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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceDiagram basedMediumMulti-step

JEE Main 25 June 2022, Shift 2, Chemistry Q77

Question 77 of 90 in this shift, Chemistry question 17 of 30, Section A.

Which of the following conditions or reaction sequence will NOT give acetophenone as the major product ?

The figure, in words

Each option is a reagent/sequence with a drawn carbonyl compound (C=O with two substituents as printed).
  1. (1)(a) [drawn: carbonyl C (C=O) with C6H5\mathrm{C_6H_5} at lower left and H at lower right] + CH3MgBr\mathrm{CH_3MgBr} (b) Na2Cr2O7\mathrm{Na_2Cr_2O_7}, H+\mathrm{H^+}
  2. (2)(a) [drawn: carbonyl C (C=O) with H3C\mathrm{H_3C} at lower left and H at lower right] + C6H5MgBr\mathrm{C_6H_5MgBr} (b) PCC, DCM
  3. (3)[drawn: carbonyl C (C=O) with C6H5\mathrm{C_6H_5} at lower left and OC2H5\mathrm{OC_2H_5} at lower right] + 2 CH3MgBr\mathrm{CH_3MgBr}Official answer
  4. (4)[drawn: carbonyl C (C=O) with C6H5\mathrm{C_6H_5} at lower left and Cl at lower right] + CH3MgBr\mathrm{CH_3MgBr} + CdCl2\mathrm{CdCl_2}

Official answer

Option 3

NTA final key.