JEE Main · Chemistry · Organic Chemistry: Some Basic Principles and Techniques
Carbanion Stability
JEE Main asked Carbanion Stability 3 times in 3 of the 108 shifts Lumi analysed, in 2020, 2024 and 2026. It belongs to Inductive and Electromeric Effects, in Organic Chemistry: Some Basic Principles and Techniques (Chemistry). The longest wait between two years asking it was 4 years.
Updated 2026-10-24
- Times asked
- 3
- in 3 shifts
- Years
- 3 of 8
- First asked
- 2020
- last in 2026
- Pattern
- Frequent
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2020, 2024 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: 1 in 12 shifts · 2021: 0 in 24 shifts · 2022: 0 in 24 shifts · 2023: 0 in 12 shifts · 2024: 1 in 18 shifts · 2025: 0 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 carbanion stability
- Stability order of cyclic carbanions including cyclopentadienyl
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.
- 5 Apr 2026, Shift 1 · Q63Given below are two statements: Statement I: On the basis of inductive effect, the order of stability of alkyl carbanions is…EasyTwo statements
- 4 Apr 2024, Shift 2 · Q74Correct order of stability of carbanion is -MediumDiagram basedHas a figure
- 9 Jan 2020, Shift 1 · Q40The increasing order of basicity for the following intermediates is (from weak to strong)MediumDiagram basedHas a figure
Shifts: 9 Jan 2020, Shift 1, 4 Apr 2024, Shift 2, 5 Apr 2026, Shift 1.
Same topic
Other ideas in Inductive and Electromeric Effects
Inductive and Electromeric Effects has 5 ideas JEE Main has asked; 2 of them came up in more than one question.
- Carbocation Stability4× · 2025
- -I Effect Order of Neutral Withdrawing Groupsonce · 2026
- Electromeric Effectonce · 2024
- Inductive Effect on Dipole Momentonce · 2023