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Saturday, 31 October

JEE Main · Chemistry · Electrochemistry

Gibbs Energy and EMF

JEE Main asked Gibbs Energy and EMF 4 times in 4 of the 108 shifts Lumi analysed, in 2020, 2022 and 2023. It belongs to Nernst Equation, in Electrochemistry (Chemistry). The longest wait between two years asking it was 2 years. In 2020 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 2023
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

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

00.10.20’170.17’200’210.03’220.07’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 2 in 12 shifts · 2021: 0 in 24 shifts · 2022: 1 in 24 shifts · 2023: 1 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
  • 20231 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.

  • Count incorrect statements on cell thermodynamics
  • Gibbs energy from standard potentials

Difficulty

Easy 2Medium 2Hard 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. 8 Apr 2023, Shift 2 · Q86The number of incorrect statements from the following is ____________ A. The electrical work that a reaction can perform at constant…MediumNumerical value
  2. 27 Jun 2022, Shift 2 · Q87For the reaction taking place in the cell: Pt(s)∣H2(g)∣H+(aq) ∣∣ Ag+(aq)∣Ag(s)\mathrm{Pt(s)|H_2(g)|H^{+}(aq)\,||\,Ag^{+}(aq)|Ag(s)} Ecell∘\mathrm{E^\circ_{cell}} = + 0.5332 V.…MediumNumerical value
  3. 5 Sep 2020, Shift 1 · Q49An oxidation-reduction reaction in which 3 electrons are transferred has a ΔG0\Delta \mathrm{G}^{0} of 17.37 kJ mol−1^{-1} at…EasyNumerical value
  4. 2 Sep 2020, Shift 1 · Q47The Gibbs energy change (in J) for the given reaction at [Cu2+]=[Sn2+]=1[\mathrm{Cu^{2+}}]=[\mathrm{Sn^{2+}}]=1 M and 298 K is :…EasyNumerical value

Shifts: 2 Sep 2020, Shift 1, 5 Sep 2020, Shift 1, 27 Jun 2022, Shift 2, 8 Apr 2023, 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