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Saturday, 31 October

JEE Main · Chemistry · The d- and f-Block Elements

Mechanisms of Catalytic Activity

JEE Main asked Mechanisms of Catalytic Activity 2 times in 2 of the 108 shifts Lumi analysed, in 2024 and 2026. It belongs to d-Block Elements, in The d- and f-Block Elements (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
2024
last in 2026
Pattern
New since 2024
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2024 and 2026. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.10.20’170’200’210’220’230.05’240’250.11’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 0 in 24 shifts · 2022: 0 in 24 shifts · 2023: 0 in 12 shifts · 2024: 1 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
  • 20241 of 18
  • 20230 of 12
  • 20220 of 24
  • 20210 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Other is the usual form. Skill tested: conceptual.

  • Statement i/ii on catalytic properties
  • Identify role of catalyst in reaction

Difficulty

Easy 1Medium 1Hard 0

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.

  1. 8 Apr 2026, Shift 2 · Q61Given below are two statements for catalytic properties of transition metals. Statement I : First row transition metals which act as…EasyTwo statements
  2. 8 Apr 2024, Shift 1 · Q69Iron (III) catalyses the reaction between iodide and persulphate ions, in which A. Fe3+\mathrm{Fe^{3+}} oxidises the iodide ion B.…MediumOther

Shifts: 8 Apr 2024, Shift 1, 8 Apr 2026, Shift 2.

Same topic

Other ideas in d-Block Elements

d-Block Elements has 31 ideas JEE Main has asked; 21 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas