JEE Main · Chemistry · Haloalkanes and Haloarenes
Counting Alpha-Hydrogens
JEE Main asked Counting Alpha-Hydrogens once in the 108 shifts Lumi analysed, on 11 Apr 2023, Shift 1. It belongs to Resonance and Hyperconjugation, in Haloalkanes and Haloarenes (Chemistry).
Updated 2026-10-24
- Times asked
- 1
- in 1 shift
- Years
- 1 of 8
- First asked
- 2023
- the only year
- Pattern
- Occasional
- asked once so far
Questions on this idea a shift, by year
2017–2026. Asked in 2023. 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: 1 in 12 shifts · 2024: 0 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 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
Numerical value is the usual form. Skill tested: multi-step.
- Count hyperconjugation structures of carbocation
Difficulty
1 of the 1 question had a numerical answer.
Every question
The question
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
Shift: 11 Apr 2023, Shift 1.
Same topic
Other ideas in Resonance and Hyperconjugation
Resonance and Hyperconjugation has 7 ideas JEE Main has asked; 5 of them came up in more than one question.
- Mesomeric Effect9× · 2026
- Huckel's Rule7× · 2023
- Relative Stability4× · 2024
- Hyperconjugation3× · 2026
- Resonance Structures3× · 2021
- Heat of Hydrogenationonce · 2020