Learn

Saturday, 31 October

JEE Main 2021 · ChemistryNumerical answerNumerical valueHardDiagram reading

JEE Main 4 August 2021, Shift 1, Chemistry Q59

Question 59 of 90 in this shift, Chemistry question 29 of 30, Section B.

From the following compounds, the total number of compound(s) which will show Geometrical isomerism is ________.

The figure, in words

Four drawn six-membered rings in a row, each with an exocyclic double bond from the upper-right ring carbon to a labelled group: ring 1 =CH2, ring 2 =CH2, ring 3 =CH—CH3, ring 4 =CH—CH3. Unlabelled plain line stubs on rings: rings 1 and 3 each have a stub from the top vertex, a stub from the upper-left vertex, a stub from the bottom vertex and a stub from the lower-right vertex; rings 2 and 4 each have a stub from the top vertex, a stub from the bottom vertex and a stub from the lower-right vertex (no upper-left stub).

Official answer

1

NTA final key.

Chapter
Organic Chemistry: Some Basic Principles and Techniques
Topic
Stereoisomerism
Idea tested
Counting Geometrical Isomers

Same topic in other shifts

All Stereoisomerism questions
  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. 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
  4. 6 Apr 2024, Shift 2 · Q75The incorrect statement regarding the geometrical isomers of 2-butene is :EasySingle correct
  5. 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
  6. 8 Apr 2024, Shift 2 · Q89Total number of optically active compounds from the following is ___________. (1) Fischer projection: CH3\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. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.