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Saturday, 31 October

JEE Main · Chemistry · Chemical Kinetics

Arrhenius Exponential Form

JEE Main asked Arrhenius Exponential Form 4 times in 4 of the 108 shifts Lumi analysed, in 2017, 2021, 2022 and 2026. It belongs to Arrhenius Equation, in Chemical Kinetics (Chemistry). The longest wait between two years asking it was 4 years, across 2018 and 2019, which Lumi has no shifts for.

Updated 2026-10-24

Times asked
4
in 4 shifts
Years
4 of 8
First asked
2017
last in 2026
Pattern
Frequent
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2017, 2021, 2022 and 2026. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.510.83’170’200.03’210.03’220’230’240’250.11’26

Raw count: 2017: 1 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 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.

  • 20261 of 9
  • 20250 of 8
  • 20240 of 18
  • 20230 of 12
  • 20221 of 24
  • 20211 of 24
  • 20200 of 12
  • 20171 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Numerical value is the usual form. Skill tested: calculation.

  • Activation energy from rate expression
  • Ln rate ratio from activation energy gap

Difficulty

Easy 2Medium 2Hard 0

3 of the 4 questions had a numerical answer.

Every question

All 4 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 6 Apr 2026, Shift 2 · Q75Decomposition of a hydrocarbon follows the equation k=(5.5×1011 s−1) e−28000 KTk=(5.5\times10^{11}\,\mathrm{s^{-1}})\,e^{\frac{-28000\,\mathrm{K}}{T}}. The…EasyNumerical value
  2. 30 Jun 2022, Shift 1 · Q84For the reaction P →\rightarrow B, the values of frequency factor A and activation energy EA\mathrm{E_A} are 4×10134\times10^{13} s−1^{-1}…MediumNumerical value
  3. 26 Feb 2021, Shift 2 · Q58If the activation energy of a reaction is 80.9 kJ mol−1\mathrm{mol^{-1}}, the fraction of molecules at 700 K, having enough energy to react…MediumNumerical value
  4. 2 Apr 2017 (offline) · Q39Two reactions R1R_1 and R2R_2 have identical pre-exponential factors. Activation energy of R1R_1 exceeds that of R2R_2 by 10 kJ…EasySingle correct

Shifts: 2 Apr 2017 (offline), 26 Feb 2021, Shift 2, 30 Jun 2022, Shift 1, 6 Apr 2026, Shift 2.

Same topic

Other ideas in Arrhenius Equation

Arrhenius Equation has 10 ideas JEE Main has asked; 7 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas