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Saturday, 31 October

JEE Main · Chemistry · Alcohols, Phenols and Ethers

Grignard Synthesis of Alcohols

JEE Main asked Grignard Synthesis of Alcohols 3 times in 3 of the 108 shifts Lumi analysed, in 2020, 2022 and 2023. It belongs to Alcohols and Phenols, in Alcohols, Phenols and Ethers (Chemistry). The longest wait between two years asking it was 2 years.

Updated 2026-10-24

Times asked
3
in 3 shifts
Years
3 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, 2022 and 2023. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.050.10’170.08’200’210.03’220.07’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 0 in 24 shifts · 2022: 1 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
  • 20221 of 24
  • 20210 of 24
  • 20201 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Numerical value is the usual form. Skill tested: application.

  • Reagent ratio in grignard reaction
  • Mass percent from deduced reactant

Difficulty

Easy 0Medium 3Hard 0

2 of the 3 questions had a numerical answer.

Every question

All 3 questions

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

  1. 11 Apr 2023, Shift 1 · Q90[figure: 4-hydroxybutanal, OHC−CH2CH2CH2−OH\mathrm{OHC{-}CH_2CH_2CH_2{-}OH} (y mole)] →H3O+x mol of MeMgBr\xrightarrow[\mathrm{H_3O^+}]{x\ \text{mol of MeMgBr}} [figure:…MediumNumerical valueHas a figure
  2. 26 Jul 2022, Shift 1 · Q75Which reactant will give the following alcohol on reaction with one mole of phenyl magnesium bromide (PhMgBr) followed by acidic…MediumOtherHas a figure
  3. 9 Jan 2020, Shift 2 · Q50Consider the following reactions A →(ii) H3O+(i) CH3MgBr\xrightarrow[\text{(ii) } H_3O^+]{\text{(i) } CH_3MgBr} B →573 KCu\xrightarrow[573\text{ K}]{Cu}…MediumNumerical value

Shifts: 9 Jan 2020, Shift 2, 26 Jul 2022, Shift 1, 11 Apr 2023, Shift 1.

Same topic

Other ideas in Alcohols and Phenols

Alcohols and Phenols has 26 ideas JEE Main has asked; 13 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas