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Saturday, 31 October

JEE Main · Chemistry · Chemical Bonding and Molecular Structure

Boiling Point Anomalies of p-Block Hydrides

JEE Main asked Boiling Point Anomalies of p-Block Hydrides 2 times in 2 of the 108 shifts Lumi analysed, in 2020 and 2024. It belongs to Periodic Trends, in Chemical Bonding and Molecular Structure (Chemistry). The longest wait between two years asking it was 4 years.

Updated 2026-10-24

Times asked
2
in 2 shifts
Years
2 of 8
First asked
2020
last in 2024
Pattern
Occasional
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.050.10’170.08’200’210’220’230.05’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 1 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: 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
  • 20241 of 18
  • 20230 of 12
  • 20220 of 24
  • 20210 of 24
  • 20201 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Assertion–reason is the usual form. Skill tested: conceptual.

  • Assertion-reason on boiling points of hydrides
  • Boiling point of h2s compared with water

Difficulty

Easy 2Medium 0Hard 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. 1 Feb 2024, Shift 1 · Q66Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : PH3\mathrm{PH_3}…EasyAssertion–reason
  2. 3 Sep 2020, Shift 1 · Q33If the boiling point of H2O\mathrm{H_2O} is 373 K, the boiling point of H2S\mathrm{H_2S} will be :EasySingle correct

Shifts: 3 Sep 2020, Shift 1, 1 Feb 2024, Shift 1.

Same topic

Other ideas in Periodic Trends

Periodic Trends has 25 ideas JEE Main has asked; 17 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas