Learn

Saturday, 31 October

JEE Main · Chemistry · Aldehydes, Ketones and Carboxylic Acids

Hell-Volhard-Zelinsky Reaction

JEE Main asked Hell-Volhard-Zelinsky Reaction 4 times in 4 of the 108 shifts Lumi analysed, in 2021, 2022, 2023 and 2024. It belongs to Carboxylic Acids and Derivatives, in Aldehydes, Ketones and Carboxylic Acids (Chemistry). The longest wait between two years asking it was 1 year.

Updated 2026-10-24

Times asked
4
in 4 shifts
Years
4 of 8
First asked
2021
last in 2024
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021, 2022, 2023 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.050.10’170’200.03’210.03’220.07’230.05’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 1 in 12 shifts · 2024: 1 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
  • 20241 of 18
  • 20231 of 12
  • 20221 of 24
  • 20211 of 24
  • 20200 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: recall.

  • Predict product of reaction
  • Match list on named reactions and reagents

Difficulty

Easy 3Medium 1Hard 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. 8 Apr 2024, Shift 1 · Q79Identify the product (P) in the following reaction: [figure: cyclopentanecarboxylic acid]…EasyDiagram basedHas a figure
  2. 6 Apr 2023, Shift 1 · Q77Match List I with List II LIST I (Name of reaction) | LIST II (Reagent used) A. Hell-Volhard-Zelinsky reaction | I. NaOH+I2\mathrm{NaOH + I_2}…MediumMatch the list
  3. 30 Jun 2022, Shift 1 · Q74Consider the given chemical reaction [structure: a six-membered saturated carbon ring bearing a C(=O)OH group (carbonyl O drawn above the…EasyDiagram basedHas a figure
  4. 4 Aug 2021, Shift 1 · Q44Identify the reagent in the following reaction. CH3−CH2−C(=O)−OH→ReagentCH3−CH(X)−C(=O)−OH\mathrm{CH_3-CH_2-C(=O)-OH \xrightarrow{Reagent} CH_3-CH(X)-C(=O)-OH} (X = Cl, – Br)EasySingle correctHas a figure

Shifts: 4 Aug 2021, Shift 1, 30 Jun 2022, Shift 1, 6 Apr 2023, Shift 1, 8 Apr 2024, Shift 1.

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