Learn

Saturday, 31 October

JEE Main · Chemistry · Thermodynamics (Chemistry)

Entropy Change at Equilibrium Phase Transition

JEE Main asked Entropy Change at Equilibrium Phase Transition once in the 108 shifts Lumi analysed, on 15 Apr 2023, Shift 1. It belongs to Entropy, in Thermodynamics (Chemistry) (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.

00.050.10’170’200’210’220.07’230’240’250’26

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

Numerical value is the usual form. Skill tested: calculation.

  • Melting point from entropy of fusion

Difficulty

Easy 1Medium 0Hard 0

1 of the 1 question had a numerical answer.

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.

  1. 15 Apr 2023, Shift 1 · Q8230.4 kJ of heat is required to melt one mole of sodium chloride and the entropy change at the melting point is 28.4 J…EasyNumerical value

Shift: 15 Apr 2023, Shift 1.

Same topic

Other ideas in Entropy

Entropy has 4 ideas JEE Main has asked; 0 of them came up in more than one question.