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Saturday, 31 October

JEE Main · Chemistry · Aldehydes, Ketones and Carboxylic Acids

Carboxylic Acid Synthesis via Grignard and CO2

JEE Main asked Carboxylic Acid Synthesis via Grignard and CO2 4 times in 4 of the 108 shifts Lumi analysed, in 2021, 2022 and 2025. It belongs to Carboxylic Acids and Derivatives, in Aldehydes, Ketones and Carboxylic Acids (Chemistry). The longest wait between two years asking it was 3 years. In 2021 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
4
in 4 shifts
Years
3 of 8
First asked
2021
last in 2025
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021, 2022 and 2025. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.10.20’170’200.07’210.03’220’230’240.13’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 2 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 in 18 shifts · 2025: 1 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
  • 20251 of 8
  • 20240 of 18
  • 20230 of 12
  • 20221 of 24
  • 20212 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Single correct is the usual form. Skill tested: multi-step.

  • Identify reactions giving carboxylic acid
  • Reagent sequence for conversion

Difficulty

Easy 1Medium 3Hard 0

Every question was multiple choice.

Every question

All 4 questions

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

  1. 2 Apr 2025, Shift 2 · Q68Consider the following reactions. From these reactions which reaction will give carboxylic acid as a major product ? (A)…MediumOtherHas a figure
  2. 30 Jul 2022, Shift 2 · Q45[figure: six-membered ring with three alternating double bonds bearing Br (printed Br); long arrow; six-membered ring with three…EasyDiagram basedHas a figure
  3. 27 Aug 2021, Shift 2 · Q42Which one of the following reactions will not yield propionic acid ?MediumSingle correct
  4. 26 Aug 2021, Shift 1 · Q48The correct sequential addition of reagents in the preparation of 3-nitrobenzoic acid from benzene is :MediumSingle correct

Shifts: 26 Aug 2021, Shift 1, 27 Aug 2021, Shift 2, 30 Jul 2022, Shift 2, 2 Apr 2025, Shift 2.

Same topic

Other ideas in Carboxylic Acids and Derivatives

Carboxylic Acids and Derivatives has 15 ideas JEE Main has asked; 11 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas