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Saturday, 31 October

JEE Main · Physics · Thermal Properties of Matter

Latent Heat and Phase Change

JEE Main asked Latent Heat and Phase Change 4 times in 4 of the 108 shifts Lumi analysed, in 2020, 2021 and 2022. It belongs to Calorimetry, in Thermal Properties of Matter (Physics). The longest wait between two years asking it was 1 year. In 2022 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
4
in 4 shifts
Years
3 of 8
First asked
2020
last in 2022
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2021 and 2022. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.050.10’170.08’200.03’210.07’220’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 1 in 24 shifts · 2022: 2 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
  • 20222 of 24
  • 20211 of 24
  • 20201 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.

  • Maximum ice melted by hot block
  • Heat rejected by condensing steam

Difficulty

Easy 4Medium 0Hard 0

2 of the 4 questions had a numerical answer.

Every question

All 4 questions

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

  1. 25 Jun 2022, Shift 2 · Q35A copper block of mass 5.0 kg is heated to a temperature of 500∘C500^\circ\mathrm{C} and is placed on a large ice block. What is the maximum…EasySingle correct
  2. 25 Jun 2022, Shift 1 · Q54A steam engine intakes 50 g of steam at 100∘100^\circC per minute and cools it down to 20∘20^\circC. If latent heat of vaporization of steam…EasyNumerical value
  3. 3 Aug 2021, Shift 1 · Q22A steam engine intakes 80 gg steam at 100°C per minute and cools it down to 30°C. The heat energy consumed by the steam engine per minute…EasyNumerical value
  4. 4 Sep 2020, Shift 1 · Q7The specific heat of water = 4200 J kg−1^{-1}K−1^{-1} and the latent heat of ice = 3.4×1053.4\times10^5 J kg−1^{-1}. 100 grams of ice at 0°C is…EasySingle correct

Shifts: 4 Sep 2020, Shift 1, 3 Aug 2021, Shift 1, 25 Jun 2022, Shift 2, 25 Jun 2022, Shift 1.

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