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Saturday, 31 October

JEE Main · Chemistry · Solutions

Molarity and Molality Interconversion

JEE Main asked Molarity and Molality Interconversion 5 times in 5 of the 108 shifts Lumi analysed, in 2021, 2022 and 2024. It belongs to Mole Concept, in Solutions (Chemistry). The longest wait between two years asking it was 2 years. In 2024 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
5
in 5 shifts
Years
3 of 8
First asked
2021
last in 2024
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

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

00.10.20’170’200.03’210.03’220’230.14’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 3 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
  • 20243 of 18
  • 20230 of 12
  • 20221 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

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

  • Molarity from molality and density
  • Molality from molarity and density

Difficulty

Easy 2Medium 3Hard 0

3 of the 5 questions had a numerical answer.

Every question

All 5 questions

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

  1. 9 Apr 2024, Shift 1 · Q81Molarity (M) of an aqueous solution containing xx g of anhyd. CuSO4\mathrm{CuSO_4} in 500 mL solution at 32 ∘^\circC is 2×10−12\times10^{-1} M.…MediumNumerical value
  2. 6 Apr 2024, Shift 2 · Q61Molality (mm) of 3 M aqueous solution of NaCl is : (Given : Density of solution =1.25 g mL−1=1.25\ \mathrm{g\,mL^{-1}}, Molar mass in…EasySingle correct
  3. 6 Apr 2024, Shift 1 · Q61The density of 'x' M solution ('x' molar) of NaOH is 1.12 g mL−1^{-1}, while in molality, the concentration of the solution is 3 m (3…EasySingle correct
  4. 30 Jul 2022, Shift 2 · Q51The density of 4 molal solution of NaOH is 1.160 g mL−1\mathrm{mL^{-1}}. The molarity of the solution is ________ M. (Given : Molar mass of…MediumNumerical value
  5. 26 Aug 2021, Shift 1 · Q51An aqueous KCl solution of density 1.20 g mL−1^{-1} has a molality of 3.30 mol kg−1^{-1}. The molarity of the solution in mol L−1^{-1} is…MediumNumerical value

Shifts: 26 Aug 2021, Shift 1, 30 Jul 2022, Shift 2, 6 Apr 2024, Shift 2, 6 Apr 2024, Shift 1, 9 Apr 2024, Shift 1.

Same topic

Other ideas in Mole Concept

Mole Concept has 18 ideas JEE Main has asked; 12 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas