JEE Main · Chemistry · Hydrogen
Kinetic Isotope Effect in Hydrogen
JEE Main asked Kinetic Isotope Effect in Hydrogen 2 times in 2 of the 108 shifts Lumi analysed, in 2021 and 2023. It belongs to Hydrogen and Hydrides, in Hydrogen (Chemistry). The longest wait between two years asking it was 2 years.
Updated 2026-10-24
- Times asked
- 2
- in 2 shifts
- Years
- 2 of 8
- First asked
- 2021
- last in 2023
- Pattern
- Occasional
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2021 and 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: 1 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
Assertion–reason is the usual form. Skill tested: conceptual.
- Assertion-reason on hydrogen isotopes
- Assertion-reason on heavy water
Difficulty
Every question was multiple choice.
Every question
All 2 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 13 Apr 2023, Shift 2 · Q66Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Isotopes of hydrogen…MediumAssertion–reason
- 26 Aug 2021, Shift 2 · Q36Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Heavy water is…MediumAssertion–reason
Shifts: 26 Aug 2021, Shift 2, 13 Apr 2023, Shift 2.
Same topic
Other ideas in Hydrogen and Hydrides
Hydrogen and Hydrides has 29 ideas JEE Main has asked; 21 of them came up in more than one question. The 12 most asked are below.
- Isotopes of Hydrogen5× · 2023
- Syngas Production via Reforming4× · 2023
- Redox Behavior of Hydrogen Peroxide4× · 2022
- Ion-Exchange Resins for Water Softening3× · 2023
- Water-Gas Shift Reaction3× · 2023
- Oxidizing Action of H2O23× · 2022
- Temporary Hardness and Clark's Method3× · 2022
- H-H Bond Dissociation Enthalpy3× · 2021
- Covalent Hydride Types2× · 2023
- Dihydrogen from Brine Electrolysis2× · 2023
- Storage and Stabilization of H2O22× · 2023
- Causes of Temporary and Permanent Hardness2× · 2022