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Saturday, 31 October

JEE Main · Chemistry · Chemical Kinetics

Activation Energy Calculation

JEE Main asked Activation Energy Calculation 7 times in 7 of the 108 shifts Lumi analysed, in 2021, 2022 and 2023. It belongs to Arrhenius Equation, in Chemical Kinetics (Chemistry). The longest wait between two years asking it was 1 year. In 2022 and 2023 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
7
in 7 shifts
Years
3 of 8
First asked
2021
last in 2023
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021, 2022 and 2023. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.10.20’170’200.03’210.14’220.14’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 4 in 24 shifts · 2023: 2 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.

  • 20260 of 9
  • 20250 of 8
  • 20240 of 18
  • 20232 of 12
  • 20224 of 24
  • 20211 of 24
  • 20200 of 12
  • 20170 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.

  • Rate ratio from activation energies
  • Activation energy from ln k graph

Difficulty

Easy 4Medium 3Hard 0

7 of the 7 questions had a numerical answer.

Every question

All 7 questions

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

  1. 8 Apr 2023, Shift 1 · Q87The number of given statement/s which is/are correct is ________ (A) The stronger the temperature dependence of the rate constant, the…MediumNumerical value
  2. 6 Apr 2023, Shift 1 · Q87For the adsorption of hydrogen on platinum, the activation energy is 30 kJ mol−1^{-1} and for the adsorption of hydrogen on nickel, the…MediumNumerical value
  3. 29 Jun 2022, Shift 2 · Q85The equation k=(6.5×1012 s−1) e−26000 K/Tk = (6.5\times10^{12}\ \mathrm{s^{-1}})\,e^{-26000\,\mathrm{K}/T} is followed for the decomposition of compound A. The…EasyNumerical value
  4. 27 Jun 2022, Shift 2 · Q88It has been found that for a chemical reaction with rise in temperature by 9 K the rate constant gets doubled. Assuming a reaction to be…MediumNumerical value
  5. 27 Jun 2022, Shift 1 · Q86The rate constant for a first order reaction is given by the following equation : ln⁡k=33.24−2.0×104 KT\ln k = 33.24 - \frac{2.0\times10^4\ \mathrm{K}}{T}…EasyNumerical value
  6. 24 Jun 2022, Shift 1 · Q85The rate constants for decomposition of acetaldehyde have been measured over the temperature range 700−1000700-1000 K. The data has been…EasyNumerical valueHas a figure
  7. 31 Aug 2021, Shift 2 · Q57For the reaction A → B, the rate constant k (in s−1\mathrm{s^{-1}}) is given by log⁡10k=20.35−(2.47×103)T\log_{10} k = 20.35 - \frac{(2.47 \times 10^3)}{T} The…EasyNumerical value

Shifts: 31 Aug 2021, Shift 2, 24 Jun 2022, Shift 1, 27 Jun 2022, Shift 2, 27 Jun 2022, Shift 1, 29 Jun 2022, Shift 2, 6 Apr 2023, Shift 1, 8 Apr 2023, Shift 1.

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