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Saturday, 31 October

JEE Main · Chemistry · Electrochemistry

Full Cell Nernst Equation

JEE Main asked Full Cell Nernst Equation 12 times in 12 of the 108 shifts Lumi analysed, in 2020, 2021, 2022, 2024, 2025 and 2026. It belongs to Nernst Equation, in Electrochemistry (Chemistry). The longest wait between two years asking it was 2 years. In 2021, 2022 and 2026 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
12
in 12 shifts
Years
6 of 8
First asked
2020
last in 2026
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2021, 2022, 2024, 2025 and 2026. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.150.30’170.08’200.14’210.10’220’230.05’240.13’250.22’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 4 in 24 shifts · 2022: 3 in 24 shifts · 2023: 0 in 12 shifts · 2024: 1 in 18 shifts · 2025: 1 in 8 shifts · 2026: 2 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20262 of 9
  • 20251 of 8
  • 20241 of 18
  • 20230 of 12
  • 20223 of 24
  • 20214 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.

  • Unknown charge from cell emf
  • Ion concentration from cell emf

Difficulty

Easy 1Medium 7Hard 4

10 of the 12 questions had a numerical answer.

Every question

All 12 questions

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

  1. 5 Apr 2026, Shift 2 · Q57One half cell in a voltaic cell is constructed by dipping silver rod in AgNO3\mathrm{AgNO_3} solution of unknown concentration, other half…MediumSingle correct
  2. 4 Apr 2026, Shift 2 · Q73An electrochemical cell, consist of the following two redox couples, Mx+(aq)/M(s)\mathrm{M^{x+}(aq)/M(s)} [Ered⊖=+0.15 V][E^\ominus_{red}=+0.15\ \mathrm{V}] and…HardNumerical value
  3. 7 Apr 2025, Shift 1 · Q711 Faraday electricity was passed through Cu2+\mathrm{Cu^{2+}} (1.5 M, 1 L) /Cu and 0.1 Faraday was passed through Ag+\mathrm{Ag^+} (0.2 M, 1…HardNumerical valueHas a figure
  4. 8 Apr 2024, Shift 2 · Q63The emf of cell Tl ∣ Tl+(0.001 M) ∣∣ Cu2+(0.01 M) ∣ Cu\mathrm{Tl\,|\,Tl^+(0.001\,M)\,||\,Cu^{2+}(0.01\,M)\,|\,Cu} is 0.83 V at 298 K. It could be increased by :MediumSingle correct
  5. 24 Jun 2022, Shift 1 · Q84The cell potential for the following cell Pt ∣H2(g)∣H+(aq)∥ Cu2+(0.01 M)∣Cu(s)\mathrm{Pt\,|H_2(g)|H^+(aq)\|\ Cu^{2+}(0.01\ M)|Cu(s)} is 0.576 V at 298 K. The pH of the…MediumNumerical value
  6. 29 Jul 2022, Shift 2 · Q84For a cell, Cu(s)∣Cu2+(0.001M)∣∣Ag+(0.01M)∣Ag(s)\mathrm{Cu(s) \mid Cu^{2+}(0.001M) \mid\mid Ag^{+}(0.01M) \mid Ag(s)} the cell potential is found to be 0.43 V at 298 K. The…MediumNumerical value
  7. 25 Jul 2022, Shift 1 · Q84The cell potential for Zn∣Zn2+(aq)∥Snx+∣ Sn\mathrm{Zn|Zn^{2+}(aq)\|Sn^{x+}|\,Sn} is 0.8010.801 V at 298 K. The reaction quotient for the above reaction is…MediumNumerical value
  8. 25 Jul 2021, Shift 1 · Q58Consider the cell at 25∘^\circC Zn∣Zn2+(aq),(1 M) ∣∣ Fe3+(aq),Fe2+(aq)∣Pt(s)\mathrm{Zn|Zn^{2+}(aq),(1\ M)\,||\,Fe^{3+}(aq),Fe^{2+}(aq)|Pt(s)} The fraction of total iron present as…HardNumerical value
  9. 22 Jul 2021, Shift 2 · Q56Assume a cell with the following reaction Cu(s)+2Ag+(1×10−3 M)→Cu2+(0.250 M)+2 Ag(s)\mathrm{Cu_{(s)} + 2Ag^+ (1\times10^{-3}\ M) \rightarrow Cu^{2+} (0.250\ M) + 2\ Ag_{(s)}}…EasyNumerical value
  10. 26 Feb 2021, Shift 2 · Q57Emf of the following cell at 298 K in V is x×10−2x \times 10^{-2}. Zn∣Zn2+\mathrm{Zn|Zn^{2+}} (0.1 M)∥\|Ag+\mathrm{Ag^+} (0.01 M)∣|Ag The value of…MediumNumerical value
  11. 26 Aug 2021, Shift 2 · Q56For the galvanic cell, Zn(s)+Cu2+\mathrm{Zn(s) + Cu^{2+}} (0.02 M) →Zn2+\rightarrow \mathrm{Zn^{2+}} (0.04 M) +Cu(s)+ \mathrm{Cu(s)}, Ecell\mathrm{E_{cell}}…MediumNumerical value
  12. 3 Sep 2020, Shift 1 · Q48The photoelectric current from Na (work function, w0=2.3\mathrm{w_0}=2.3 eV) is stopped by the output voltage of the cell…HardNumerical value

Shifts: 3 Sep 2020, Shift 1, 26 Feb 2021, Shift 2, 22 Jul 2021, Shift 2, 25 Jul 2021, Shift 1, 26 Aug 2021, Shift 2, 24 Jun 2022, Shift 1, 25 Jul 2022, Shift 1, 29 Jul 2022, Shift 2, 8 Apr 2024, Shift 2, 7 Apr 2025, Shift 1, 4 Apr 2026, Shift 2, 5 Apr 2026, 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