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Saturday, 31 October

JEE Main · Chemistry · Aldehydes, Ketones and Carboxylic Acids

Grignard Reagent Addition

JEE Main asked Grignard Reagent Addition 7 times in 7 of the 108 shifts Lumi analysed, in 2020, 2021, 2022 and 2023. It belongs to Nucleophilic Addition, in Aldehydes, Ketones and Carboxylic Acids (Chemistry). The longest wait between two years asking it was 1 year. In 2021 and 2022 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
7
in 7 shifts
Years
4 of 8
First asked
2020
last in 2023
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2021, 2022 and 2023. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.050.10’170.08’200.10’210.07’220.07’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 3 in 24 shifts · 2022: 2 in 24 shifts · 2023: 1 in 12 shifts · 2024: 0 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20260 of 9
  • 20250 of 8
  • 20240 of 18
  • 20231 of 12
  • 20222 of 24
  • 20213 of 24
  • 20201 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Diagram based is the usual form. Skill tested: multi-step.

  • Predict product of reaction
  • Grignard from bromoketone then hydrolysis

Difficulty

Easy 0Medium 3Hard 4

Every question was multiple choice.

Every question

All 7 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 12 Apr 2023, Shift 1 · Q76In the following reaction [figure: CH3-C(=O)-CH2-CH(CH3)-Br, (i) Mg (ii) H2O\mathrm{H_2O} -> 'A' (Major Product)] A isHardSingle correctHas a figure
  2. 26 Jun 2022, Shift 1 · Q75[figure: drawn structure with the label MgBr at its upper end and the label MgBr at its lower end, the two joined by a bracket-shaped…HardOtherHas a figure
  3. 25 Jun 2022, Shift 2 · Q76In the given reaction 2A2\mathrm{A} →(iii) H2O / H+(i) 2 Mg, THF; (ii) Methyl benzoate\xrightarrow[\text{(iii) } \mathrm{H_2O\ /\ H^+}]{\text{(i) 2 Mg, THF; (ii) Methyl benzoate}} [drawn…MediumDiagram basedHas a figure
  4. 25 Jul 2021, Shift 2 · Q50A reaction of benzonitrile with one equivalent CH3MgBr\mathrm{CH_3MgBr} followed by hydrolysis produces a yellow liquid "P". The compound "P"…MediumSingle correct
  5. 27 Aug 2021, Shift 2 · Q44Which one of the following is the major product of the given reaction ? [reaction drawn: a fused bicyclic compound - a benzene ring (drawn…HardDiagram basedHas a figure
  6. 4 Aug 2021, Shift 2 · Q44The major products A and B in the following reaction sequence are [reaction scheme: see figure_note] (Ph = - C6H5\mathrm{C_6H_5})MediumDiagram basedHas a figure
  7. 9 Jan 2020, Shift 1 · Q45Identify (A) in the following reaction sequence : (A) Gives Positive iodoform test…HardDiagram basedHas a figure

Shifts: 9 Jan 2020, Shift 1, 25 Jul 2021, Shift 2, 4 Aug 2021, Shift 2, 27 Aug 2021, Shift 2, 25 Jun 2022, Shift 2, 26 Jun 2022, Shift 1, 12 Apr 2023, Shift 1.

Same topic

Other ideas in Nucleophilic Addition

Nucleophilic Addition has 20 ideas JEE Main has asked; 6 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas