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Saturday, 31 October

JEE Main · Chemistry · Electrochemistry

Concentration Cells

JEE Main asked Concentration Cells 3 times in 3 of the 108 shifts Lumi analysed, in 2020, 2021 and 2022. It belongs to Nernst Equation, in Electrochemistry (Chemistry). The longest wait between two years asking it was 1 year.

Updated 2026-10-24

Times asked
3
in 3 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.

00.050.10’170.08’200.03’210.03’220’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 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
  • 20221 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: application.

  • Emf of concentration cell
  • Condition for spontaneity of concentration cell

Difficulty

Easy 1Medium 2Hard 0

2 of the 3 questions had a numerical answer.

Every question

All 3 questions

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

  1. 30 Jul 2022, Shift 2 · Q55For the given cell Zn(s)∣Zn2+\mathrm{Zn(s)} \mid \mathrm{Zn^{2+}} (C1\mathrm{C_1}, M) ∥\parallel Zn\mathrm{Zn} 2+^{2+}(C2\mathrm{C_2} M)…EasyNumerical value
  2. 3 Aug 2021, Shift 2 · Q56The potential of a cell containing two hydrogen electrodes, one in contact with 10−810^{-8} M H+\mathrm{H^+} concentration and the other in…MediumNumerical value
  3. 6 Sep 2020, Shift 2 · Q45For the given cell ; Cu(s)∣Cu2+(C1 M)∣∣Cu2+(C2 M)∣Cu(s)\mathrm{Cu(s)|Cu^{2+}(C_1\ M)||Cu^{2+}(C_2\ M)|Cu(s)} change in Gibbs energy (ΔG\Delta G) is negative, if :MediumSingle correct

Shifts: 6 Sep 2020, Shift 2, 3 Aug 2021, Shift 2, 30 Jul 2022, Shift 2.

Same topic

Other ideas in Nernst Equation

Nernst Equation has 16 ideas JEE Main has asked; 9 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas