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Saturday, 31 October

JEE Main · Chemistry · Solutions

PPM and Mass Percentage

JEE Main asked PPM and Mass Percentage 7 times in 7 of the 108 shifts Lumi analysed, in 2020, 2022, 2023, 2024 and 2025. It belongs to Mole Concept, in Solutions (Chemistry). The longest wait between two years asking it was 2 years. In 2020 and 2023 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
7
in 7 shifts
Years
5 of 8
First asked
2020
last in 2025
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2022, 2023, 2024 and 2025. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.10.20’170.17’200’210.03’220.14’230.05’240.13’250’26

Raw count: 2017: 0 in 1 shift · 2020: 2 in 12 shifts · 2021: 0 in 24 shifts · 2022: 1 in 24 shifts · 2023: 2 in 12 shifts · 2024: 1 in 18 shifts · 2025: 1 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
  • 20251 of 8
  • 20241 of 18
  • 20232 of 12
  • 20221 of 24
  • 20210 of 24
  • 20202 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.

  • Molality from ppm and molarity
  • Mass percent of mixed solutions

Difficulty

Easy 4Medium 3Hard 0

6 of the 7 questions had a numerical answer.

Every question

All 7 questions

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

  1. 4 Apr 2025, Shift 2 · Q73Sea water, which can be considered as a 6 molar (6 M) solution of NaCl, has a density of 2 g mL−12\ \mathrm{g\,mL^{-1}}. The concentration of…MediumNumerical value
  2. 8 Apr 2024, Shift 2 · Q81A solution is prepared by adding 1 mole ethyl alcohol in 9 mole water. The mass percent of solute in the solution is ________ (Integer…EasyNumerical value
  3. 11 Apr 2023, Shift 2 · Q64A solution is prepared by adding 2 g of “X” to 1 mole of water. Mass percent of “X” in the solution isEasySingle correct
  4. 11 Apr 2023, Shift 1 · Q81A solution of sugar is obtained by mixing 200g of its 25% solution and 500g of its 40% solution (both by mass). The mass percentage of the…EasyNumerical value
  5. 26 Jul 2022, Shift 1 · Q81Chlorophyll extracted from the crushed green leaves was dissolved in water to make 2 L solution of Mg of concentration 48 ppm. The number…MediumNumerical value
  6. 9 Jan 2020, Shift 2 · Q4710.30 mg of O2\mathrm{O_2} is dissolved into a liter of sea water of density 1.03 g/mL. The concentration of O2\mathrm{O_2} in ppm is…EasyNumerical value
  7. 8 Jan 2020, Shift 1 · Q46Ferrous sulphate heptahydrate is used to fortify foods with iron. The amount (in grams) of the salt required to achieve 10 ppm of iron in…MediumNumerical value

Shifts: 8 Jan 2020, Shift 1, 9 Jan 2020, Shift 2, 26 Jul 2022, Shift 1, 11 Apr 2023, Shift 2, 11 Apr 2023, Shift 1, 8 Apr 2024, Shift 2, 4 Apr 2025, Shift 2.

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