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Friday, 9 October

JEE Main Chemistry · Haloalkanes and Haloarenes

Stereoisomerism in JEE Main

Stereoisomerism (Chemistry, Haloalkanes and Haloarenes) came 11 times in 10 of the 42 JEE Main shifts Lumi analysed, across 6 distinct ideas. 7 of them came in 2024–26; it was last asked in 2026.

Questions
11
in 10 shifts
Ideas asked
6
3 asked more than once
Numerical answer
6
55% of its questions
Pattern
Asked most years
last asked 2026
Questions each year
0360’172’201’211’220’235’241’251’26

In the shifts Lumi analysed for each year.

Difficulty and format
Easy 3Medium 6Hard 2

Format

  • Numerical value6 Q
  • Diagram based2 Q
  • Single correct2 Q
  • Two statements1 Q
Ideas inside the topic
6 ideas
Where it sits

Part of Haloalkanes and Haloarenes, which had 62 questions in all. Stereoisomerism accounts for 18% of them. In Lumi's JEE taxonomy it belongs to Organic Chemistry.

Some questions sit in other chapters too: Chemistry in Everyday Life, Hydrocarbons, Organic Chemistry: Some Basic Principles and Techniques.

Every question

All 11 Stereoisomerism questions

Newest first, each with its options and official answer.

  1. 4 Apr 2026, Shift 2 · Q65The following structures are [figure: stereocentre C with Br (up), CH3 (hashed, left), Me (down), Cl (wedge, right)] and [figure:…EasyDiagram basedHas a figure
  2. 7 Apr 2025, Shift 2 · Q65Given below are two statements : Statement (I) : [figure: cis-1,2-dichloroethene] is more polar than [figure: cis-1,2-dibromoethene].…MediumTwo statementsHas a figure
  3. 6 Apr 2024, Shift 2 · Q75The incorrect statement regarding the geometrical isomers of 2-butene is :EasySingle correct
  4. 8 Apr 2024, Shift 1 · Q88The number of optical isomers in following compound is:__________ [figure: three fused cyclohexane rings in a linear (anthracene-type)…HardNumerical valueHas a figure
  5. 9 Apr 2024, Shift 2 · Q76Total number of stereo isomers possible for the given structure :MediumSingle correctHas a figure
  6. 30 Jan 2024, Shift 2 · Q87Number. of geometrical isomers possible for the given structure is/are ________.MediumNumerical valueHas a figure
  7. 30 Jan 2024, Shift 2 · Q882-chlorobutane + Cl2→C4H8Cl2\mathrm{Cl_2} \to \mathrm{C_4H_8Cl_2} (isomers) Total number of optically active isomers shown by…HardNumerical value
  8. 29 Jun 2022, Shift 1 · Q89Observe structures of the following compounds [figure: five structures] The total number of structures/compounds which possess asymmetric…EasyNumerical valueHas a figure
  9. 3 Aug 2021, Shift 2 · Q44The correct structure of ciscis–2,4-dimethylhept-3-ene is,MediumDiagram basedHas a figure
  10. 8 Jan 2020, Shift 1 · Q50The number of chiral centres in penicillin is ______.MediumNumerical value
  11. 2 Sep 2020, Shift 1 · Q50The number of chiral carbons present in the molecule given below is ______.MediumNumerical valueHas a figure