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Saturday, 31 October

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

Cerium(IV) as an Oxidizing Agent

JEE Main asked Cerium(IV) as an Oxidizing Agent 4 times in 4 of the 108 shifts Lumi analysed, in 2021, 2022 and 2026. It belongs to f-Block Elements, in The d- and f-Block Elements (Chemistry). The longest wait between two years asking it was 4 years. In 2021 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
2021
last in 2026
Pattern
Frequent
across the analysed shifts

Questions on this idea a shift, by year

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

00.10.20’170’200.07’210.03’220’230’240’250.11’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 2 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
  • 20212 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Single correct is the usual form. Skill tested: conceptual.

  • Count correct statements on d- and f-block
  • True statement selection on lanthanides

Difficulty

Easy 1Medium 2Hard 1

Every question was multiple choice.

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. 4 Apr 2026, Shift 1 · Q60The correct statements among the following are, A. Mo(VI) and W(VI) are less stable than Cr(VI). B. Ce4+\mathrm{Ce^{4+}} and…HardOther
  2. 25 Jun 2022, Shift 1 · Q68Cerium (IV) has a noble gas configuration. Which of the following is **correct** statement about it ?EasySingle correct
  3. 25 Feb 2021, Shift 1 · Q38Given below are two statements : Statement I : CeO2\mathrm{CeO_2} can be used for oxidation of aldehydes and ketones. Statement II : Aqueous…MediumTwo statements
  4. 3 Aug 2021, Shift 2 · Q39Which one of the following statements is correct?MediumSingle correct

Shifts: 25 Feb 2021, Shift 1, 3 Aug 2021, Shift 2, 25 Jun 2022, Shift 1, 4 Apr 2026, Shift 1.

Same topic

Other ideas in f-Block Elements

f-Block Elements has 11 ideas JEE Main has asked; 4 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas