Learn

Saturday, 31 October

JEE Main · Chemistry · Electrochemistry

E°cell and Equilibrium

JEE Main asked E°cell and Equilibrium 4 times in 4 of the 108 shifts Lumi analysed, in 2020, 2021 and 2024. It belongs to Nernst Equation, in Electrochemistry (Chemistry). The longest wait between two years asking it was 3 years. In 2021 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
4
in 4 shifts
Years
3 of 8
First asked
2020
last in 2024
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2021 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.050.10’170.08’200.07’210’220’230.05’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 2 in 24 shifts · 2022: 0 in 24 shifts · 2023: 0 in 12 shifts · 2024: 1 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
  • 20241 of 18
  • 20230 of 12
  • 20220 of 24
  • 20212 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: calculation.

  • Equilibrium constant exponent from standard potentials
  • Equilibrium constant from standard electrode potentials

Difficulty

Easy 0Medium 4Hard 0

4 of the 4 questions had a numerical answer.

Every question

All 4 questions

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

  1. 1 Feb 2024, Shift 2 · Q85Consider the following redox reaction : MnO4−+H++H2C2O4⇌Mn2++H2O+CO2\mathrm{MnO_4^- + H^+ + H_2C_2O_4 \rightleftharpoons Mn^{2+} + H_2O + CO_2} The standard…MediumNumerical value
  2. 4 Aug 2021, Shift 2 · Q58The standard electrode potentials of the reactions are given below.…MediumNumerical value
  3. 3 Aug 2021, Shift 1 · Q56The logarithm of equilibrium constant (log⁡10\log_{10}K) for the reaction…MediumNumerical value
  4. 8 Jan 2020, Shift 2 · Q48For an electrochemical cell Sn(s)∣Sn2+(aq, 1M)∣∣Pb2+(aq, 1M)∣Pb(s)\mathrm{Sn(s)|Sn^{2+}(aq,\ 1M)||Pb^{2+}(aq,\ 1M)|Pb(s)} the ratio…MediumNumerical value

Shifts: 8 Jan 2020, Shift 2, 3 Aug 2021, Shift 1, 4 Aug 2021, Shift 2, 1 Feb 2024, 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