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Saturday, 31 October

JEE Main · Chemistry · Surface Chemistry

Micelle Formation and CMC

JEE Main asked Micelle Formation and CMC 5 times in 5 of the 108 shifts Lumi analysed, in 2020, 2021 and 2022. It belongs to Colloids, in Surface Chemistry (Chemistry). The longest wait between two years asking it was 1 year. In 2020 and 2022 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
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 Chemistry questions.

00.10.20’170.17’200.03’210.07’220’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 2 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
  • 20202 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Single correct is the usual form. Skill tested: conceptual.

  • True statement selection on micelle structure
  • Statements on thermodynamics of micelle formation

Difficulty

Easy 2Medium 3Hard 0

Every question was multiple choice.

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. 25 Jun 2022, Shift 1 · Q79Using very little soap while washing clothes, does not serve the purpose of cleaning of clothes, because :EasySingle correct
  2. 25 Jul 2022, Shift 2 · Q65For micelle formation, which of the following statements are correct ? A. Micelle formation is an exothermic process. B. Micelle formation…MediumOther
  3. 25 Jul 2021, Shift 1 · Q32Sodium stearate CH3(CH2)16COO−Na+\mathrm{CH_3(CH_2)_{16}COO^-Na^+} is an anionic surfactant which forms micelles in oil. Choose the correct statement for…MediumSingle correct
  4. 5 Sep 2020, Shift 1 · Q45Identify the correct molecular picture showing what happens at the critical micellar concentration (CMC) of an aqueous solution of a…EasyDiagram basedHas a figure
  5. 3 Sep 2020, Shift 2 · Q26An ionic micelle is formed on the addition of :MediumSingle correctHas a figure

Shifts: 3 Sep 2020, Shift 2, 5 Sep 2020, Shift 1, 25 Jul 2021, Shift 1, 25 Jun 2022, Shift 1, 25 Jul 2022, Shift 2.

Same topic

Other ideas in Colloids

Colloids has 16 ideas JEE Main has asked; 7 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisAll repeated ideas