JEE Main · Chemistry · Aldehydes, Ketones and Carboxylic Acids
Haloform Interference with Aldol
JEE Main asked Haloform Interference with Aldol 2 times in 2 of the 108 shifts Lumi analysed, all in 2021. It belongs to Aldol and Cannizzaro, in Aldehydes, Ketones and Carboxylic Acids (Chemistry). In 2021 it came in more than one shift of the same year.
Updated 2026-10-24
- Times asked
- 2
- in 2 shifts
- Years
- 1 of 8
- First asked
- 2021
- the only year
- Pattern
- Gone quiet
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2021. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.
Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 2 in 24 shifts · 2022: 0 in 24 shifts · 2023: 0 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.
How JEE Main framed it
Diagram based is the usual form. Skill tested: application.
- Identify starting compound from reaction product
- Predict product of reaction
Difficulty
Every question was multiple choice.
Every question
All 2 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 27 Aug 2021, Shift 1 · Q44The structure of the starting compound P used in the reaction given below is : P…MediumDiagram basedHas a figure
- 26 Aug 2021, Shift 1 · Q45The major products formed in the following reaction sequence A and B are : [figure: hexagonal ring joined to a carbonyl carbon (C=O) which…MediumOtherHas a figure
Shifts: 26 Aug 2021, Shift 1, 27 Aug 2021, Shift 1.
Same topic
Other ideas in Aldol and Cannizzaro
Aldol and Cannizzaro has 9 ideas JEE Main has asked; 8 of them came up in more than one question.
- Intramolecular Aldol5× · 2025
- Cannizzaro Reaction5× · 2024
- Self-Aldol Condensation4× · 2026
- Cross-Aldol Condensation3× · 2024
- Intramolecular Cannizzaro Reaction2× · 2026
- Alpha-Hydrogen Acidity2× · 2025
- Claisen-Schmidt Condensation2× · 2024
- Cross-Cannizzaro Reactiononce · 2021