JEE Main · Chemistry · States of Matter

Predicting 'a' from Molecular Structure

JEE Main asked Predicting 'a' from Molecular Structure once in the 108 shifts Lumi analysed, on 8 Apr 2023, Shift 2. It belongs to Real Gases, in States of Matter (Chemistry).

Updated 2026-10-24

Times asked: 1; in 1 shift
Years: 1 of 8
First asked: 2023; the only year
Pattern: Occasional; asked once so far

Questions on this idea a shift, by year

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

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

Order/ranking of van der waals constant a

Difficulty

Easy 1Medium 0Hard 0

The question was multiple choice.

Every question

The question

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

8 Apr 2023, Shift 2 · Q62Arrange the following gases in increasing order of van der Waals constant 'a' A. Ar B. $\mathrm{CH_4}$ C. $\mathrm{H_2O}$ D.…EasyOther

Shift: 8 Apr 2023, Shift 2.

Same topic

Other ideas in Real Gases

Real Gases has 5 ideas JEE Main has asked; 2 of them came up in more than one question.

Topic analysis Chapter analysis All repeated ideas