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Saturday, 31 October

JEE Main · Chemistry · Chemical Kinetics

Catalyst Effect on Arrhenius Parameters

JEE Main asked Catalyst Effect on Arrhenius Parameters 4 times in 4 of the 108 shifts Lumi analysed, in 2020, 2022 and 2023. It belongs to Arrhenius Equation, in Chemical Kinetics (Chemistry). The longest wait between two years asking it was 2 years. In 2020 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
4
in 4 shifts
Years
3 of 8
First asked
2020
last in 2023
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2022 and 2023. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.10.20’170.17’200’210.03’220.07’230’240’250’26

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

  • 20260 of 9
  • 20250 of 8
  • 20240 of 18
  • 20231 of 12
  • 20221 of 24
  • 20210 of 24
  • 20202 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.

  • Change in activation energy from rate ratio
  • Activation energy of catalysed reverse

Difficulty

Easy 0Medium 3Hard 1

2 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. 15 Apr 2023, Shift 1 · Q85For a reversible reaction A⇌B\mathrm{A \rightleftharpoons B}, the ΔHforward reaction=20\Delta H_{\text{forward reaction}} = 20 kJ mol−1\mathrm{mol^{-1}}. The…HardNumerical value
  2. 26 Jun 2022, Shift 2 · Q88Catalyst A reduces the activation energy for a reaction by 10 kJ mol−1\mathrm{mol^{-1}} at 300 K. The ratio of rate constants,…MediumNumerical value
  3. 9 Jan 2020, Shift 1 · Q29For following reactions A→700 KProduct\mathrm{A \xrightarrow{700\ K} Product} A→catalyst500 KProduct\mathrm{A \xrightarrow[catalyst]{500\ K} Product} it was found that…MediumSingle correct
  4. 8 Jan 2020, Shift 1 · Q27The rate of a certain biochemical reaction at physiological temperature (T) occurs 10610^6 times faster with enzyme than without. The…MediumSingle correct

Shifts: 8 Jan 2020, Shift 1, 9 Jan 2020, Shift 1, 26 Jun 2022, Shift 2, 15 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