JEE Main · Chemistry · Organic Chemistry: Some Basic Principles and Techniques
Metamerism
JEE Main asked Metamerism 3 times in 3 of the 108 shifts Lumi analysed, in 2024, 2025 and 2026. It belongs to Structural Isomerism, in Organic Chemistry: Some Basic Principles and Techniques (Chemistry). The longest wait between two years asking it was 1 year.
Updated 2026-10-24
- Times asked
- 3
- in 3 shifts
- Years
- 3 of 8
- First asked
- 2024
- last in 2026
- Pattern
- New since 2024
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2024, 2025 and 2026. 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: 0 in 24 shifts · 2022: 0 in 24 shifts · 2023: 0 in 12 shifts · 2024: 1 in 18 shifts · 2025: 1 in 8 shifts · 2026: 1 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: conceptual.
- Statement i/ii on metamerism and tautomerism
- Identify correct statements on types of isomerism
Difficulty
Every question was multiple choice.
Every question
All 3 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 6 Apr 2026, Shift 1 · Q64Given below are two statements: Statement I: 2,6-diethylcyclohexanone and 6-methyl-2-n-propylcyclohexanone are metamers. Statement II:…MediumTwo statements
- 3 Apr 2025, Shift 1 · Q64Identify the correct statements from the following. A. [structure: pentan-3-one (skeletal, C=O at the middle carbon)] and [structure:…MediumOtherHas a figure
- 6 Apr 2024, Shift 1 · Q74Which of the following is metamer of the given compound (X)?MediumDiagram basedHas a figure
Shifts: 6 Apr 2024, Shift 1, 3 Apr 2025, Shift 1, 6 Apr 2026, Shift 1.
Same topic
Other ideas in Structural Isomerism
Structural Isomerism has 9 ideas JEE Main has asked; 2 of them came up in more than one question.
- Enumeration of Structural Isomers5× · 2026
- Chain Isomerismonce · 2026
- Isomer Counting in Benzene Derivativesonce · 2025
- Aromaticity-Driven Enolizationonce · 2024
- Chain vs Position Priority Resolutiononce · 2024
- Position Isomerismonce · 2024
- Enol Content Stability Factorsonce · 2022
- Functional Isomerismonce · 2021