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Saturday, 31 October

JEE Main · Chemistry · The s-Block Elements

Thermal Stability Trends

JEE Main asked Thermal Stability Trends 3 times in 3 of the 108 shifts Lumi analysed, in 2021 and 2022. It belongs to The s-Block Elements (Chemistry). The longest wait between two years asking it was 1 year. In 2021 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
3
in 3 shifts
Years
2 of 8
First asked
2021
last in 2022
Pattern
Occasional
across the analysed shifts

Questions on this idea a shift, by year

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

00.050.10’170’200.07’210.03’220’230’240’250’26

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: 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
  • 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: recall.

  • Identify compound in reaction scheme
  • Products of heating lithium and sodium nitrates

Difficulty

Easy 1Medium 2Hard 0

Every question was multiple choice.

Every question

All 3 questions

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

  1. 29 Jul 2022, Shift 1 · Q67Lithium nitrate and sodium nitrate, when heated separately, respectively, give :EasySingle correct
  2. 26 Aug 2021, Shift 2 · Q37Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Barium…MediumAssertion–reason
  3. 3 Aug 2021, Shift 2 · Q36A white solid (X) on heating forms a solid (Y) and a gas (Z). Another solid (B) forms (X) by reacting with (Z). (Y) can be converted into…MediumSingle correct

Shifts: 3 Aug 2021, Shift 2, 26 Aug 2021, Shift 2, 29 Jul 2022, Shift 1.

Same topic

Other ideas in s-Block Elements

s-Block Elements has 27 ideas JEE Main has asked; 20 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisAll repeated ideas