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Saturday, 31 October

JEE Main · Physics · Thermal Properties of Matter

Heating and Cooling Curves

JEE Main asked Heating and Cooling Curves 2 times in 2 of the 108 shifts Lumi analysed, in 2021 and 2024. It belongs to Calorimetry, in Thermal Properties of Matter (Physics). The longest wait between two years asking it was 3 years.

Updated 2026-10-24

Times asked
2
in 2 shifts
Years
2 of 8
First asked
2021
last in 2024
Pattern
Occasional
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.050.10’170’200.03’210’220’230.05’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 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
  • 20211 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Diagram based is the usual form. Skill tested: data or graph.

  • Identify heating curve for phase changes
  • Graph interpretation of heating curves

Difficulty

Easy 1Medium 1Hard 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. 30 Jan 2024, Shift 2 · Q37A block of ice at −10∘C-10^\circ C is slowly heated and converted to steam at 100∘C100^\circ C. Which of the following curves represent the…EasyDiagram basedHas a figure
  2. 25 Jul 2021, Shift 1 · Q14Two different metal bodies A and B of equal mass are heated at a uniform rate under similar conditions. The variation of temperature of…MediumSingle correctHas a figure

Shifts: 25 Jul 2021, Shift 1, 30 Jan 2024, Shift 2.

Same topic

Other ideas in Calorimetry

Calorimetry has 12 ideas JEE Main has asked; 4 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas