JEE Main 2022 · ChemistryNumerical answerNumerical valueHardApplication

JEE Main 27 June 2022, Shift 1, Chemistry Q90

Question 90 of 90 in this shift, Chemistry question 30 of 30, Section B.

Total number of possible stereoisomers of dimethyl cyclopentane is __________.

Official answer

NTA final key.

Chapter: Organic Chemistry: Some Basic Principles and Techniques
Topic: Stereoisomerism
Idea tested: Chirality in Substituted Cycloalkanes

Same topic in other shifts

All Stereoisomerism questions

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
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
5 Apr 2024, Shift 1 · Q76Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Cis form of…EasyAssertion–reason
6 Apr 2024, Shift 2 · Q75The incorrect statement regarding the geometrical isomers of 2-butene is :EasySingle correct
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
8 Apr 2024, Shift 2 · Q89Total number of optically active compounds from the following is ___________. (1) Fischer projection: $\mathrm{CH_3}$ on top; H-C-OH;…MediumNumerical valueHas a figure

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.