Learn

Saturday, 31 October

JEE Main · Chemistry · Solutions

Boiling Point Elevation

JEE Main asked Boiling Point Elevation 13 times in 13 of the 108 shifts Lumi analysed, in 2021, 2022, 2023, 2024, 2025 and 2026. It belongs to Colligative Properties, in Solutions (Chemistry). The longest wait between two years asking it was 1 year. In 2021, 2022, 2025 and 2026 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
13
in 13 shifts
Years
6 of 8
First asked
2021
last in 2026
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021, 2022, 2023, 2024, 2025 and 2026. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.150.30’170’200.07’210.17’220.07’230.05’240.25’250.22’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 2 in 24 shifts · 2022: 5 in 24 shifts · 2023: 1 in 12 shifts · 2024: 1 in 18 shifts · 2025: 2 in 8 shifts · 2026: 2 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20262 of 9
  • 20252 of 8
  • 20241 of 18
  • 20231 of 12
  • 20225 of 24
  • 20212 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.

  • Molar mass from boiling point elevation
  • Moles of solvent from colligative data

Difficulty

Easy 8Medium 5Hard 0

10 of the 13 questions had a numerical answer.

Every question

All 13 questions

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

  1. 8 Apr 2026, Shift 2 · Q54Which of the following statements are not correct ? A. For water, magnitude of Kb\mathrm{K_b} is more than the magnitude of…MediumOtherHas a figure
  2. 4 Apr 2026, Shift 1 · Q75A non-volatile, non-electrolyte solid solute when dissolved in 4040 g of a solvent, the vapour pressure of the solvent decreased from…MediumNumerical value
  3. 3 Apr 2025, Shift 1 · Q542 moles each of ethylene glycol and glucose are dissolved in 500 g of water. The boiling point of the resulting solution is: (Given :…EasySingle correct
  4. 2 Apr 2025, Shift 2 · Q73When 1 g each of compounds AB and AB2\mathrm{AB_2} are dissolved in 15 g of water separately, they increased the boiling point of water by…MediumNumerical value
  5. 4 Apr 2024, Shift 1 · Q842.5 g of a non-volatile, non-electrolyte is dissolved in 100 g of water at 25°C. The solution showed a boiling point elevation by 2°C.…MediumNumerical value
  6. 13 Apr 2023, Shift 2 · Q84Sea water contains 29.25% NaCl and 19% MgCl2\mathrm{MgCl_2} by weight of solution. The normal boiling point of the sea water is ______…MediumNumerical value
  7. 29 Jun 2022, Shift 2 · Q83Elevation in boiling point for 1.5 molal solution of glucose in water is 4 K. The depression in freezing point for 4.5 molal solution of…EasyNumerical value
  8. 27 Jun 2022, Shift 2 · Q85A solution containing 2.5×10−32.5 \times 10^{-3} kg of a solute dissolved in 75×10−375 \times 10^{-3} kg of water boils at 373.535 K. The molar mass…EasyNumerical value
  9. 27 Jun 2022, Shift 1 · Q832 g of a non-volatile non-electrolyte solute is disolved in 200 g of two different solvents A and B whose ebullioscopic constants are in…EasyNumerical value
  10. 27 Jul 2022, Shift 1 · Q65Boiling point of a 2% aqueous solution of a non-volatile solute A is equal to the boiling point of 8% aqueous solution of a non-volatile…EasySingle correct
  11. 26 Jul 2022, Shift 2 · Q84The elevation in boiling point for 1 molal solution of non-volatile solute A is 3 K. The depression in freezing point for 2 molal solution…EasyNumerical value
  12. 25 Jul 2021, Shift 2 · Q55When 3.00 g of a substance 'X' is dissolved in 100 g of CCl4\mathrm{CCl_4}, it raises the boiling point by 0.60 K. The molar mass of the…EasyNumerical value
  13. 4 Aug 2021, Shift 1 · Q54One mole of glucose was added to 1.0L of water (density = 1 g mL−1^{-1}). The elevation in boiling point is xx Kb_b. The value of xx is…EasyNumerical value

Shifts: 25 Jul 2021, Shift 2, 4 Aug 2021, Shift 1, 27 Jun 2022, Shift 2, 27 Jun 2022, Shift 1, 29 Jun 2022, Shift 2, 26 Jul 2022, Shift 2, 27 Jul 2022, Shift 1, 13 Apr 2023, Shift 2, 4 Apr 2024, Shift 1, 2 Apr 2025, Shift 2, 3 Apr 2025, Shift 1, 4 Apr 2026, Shift 1, 8 Apr 2026, Shift 2.

Same topic

Other ideas in Colligative Properties

Colligative Properties has 21 ideas JEE Main has asked; 13 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas