JEE Main 2024 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 8 April 2024, Shift 2, Chemistry Q63

Question 63 of 90 in this shift, Chemistry question 3 of 30, Section A.

The emf of cell

\mathrm{Tl\,|\,Tl^+(0.001\,M)\,||\,Cu^{2+}(0.01\,M)\,|\,Cu}

is 0.83 V at 298 K. It could be increased by :

(1)increasing concentration of $\mathrm{Tl^+}$ ions
(2)increasing concentration of $\mathrm{Cu^{2+}}$ ionsOfficial answer
(3)increasing concentration of both $\mathrm{Tl^+}$ and $\mathrm{Cu^{2+}}$ ions
(4)decreasing concentration of both $\mathrm{Tl^+}$ and $\mathrm{Cu^{2+}}$ ions

Official answer

Option 2

NTA final key.

Chapter: Electrochemistry
Topic: Nernst Equation
Idea tested: Full Cell Nernst Equation

Same idea in other shifts

Asked 12× in all

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7 Apr 2025, Shift 1 · Q711 Faraday electricity was passed through $\mathrm{Cu^{2+}}$ (1.5 M, 1 L) /Cu and 0.1 Faraday was passed through $\mathrm{Ag^+}$ (0.2 M, 1…HardNumerical valueHas a figure
25 Jul 2022, Shift 1 · Q84The cell potential for $\mathrm{Zn|Zn^{2+}(aq)\|Sn^{x+}|\,Sn}$ is $0.801$ V at 298 K. The reaction quotient for the above reaction is…MediumNumerical value
29 Jul 2022, Shift 2 · Q84For a cell, $\mathrm{Cu(s) \mid Cu^{2+}(0.001M) \mid\mid Ag^{+}(0.01M) \mid Ag(s)}$ the cell potential is found to be 0.43 V at 298 K. The…MediumNumerical value
24 Jun 2022, Shift 1 · Q84The cell potential for the following cell $\mathrm{Pt\,|H_2(g)|H^+(aq)\|\ Cu^{2+}(0.01\ M)|Cu(s)}$ is 0.576 V at 298 K. The pH of the…MediumNumerical value
26 Aug 2021, Shift 2 · Q56For the galvanic cell, $\mathrm{Zn(s) + Cu^{2+}}$ (0.02 M) $\rightarrow \mathrm{Zn^{2+}}$ (0.04 M) $+ \mathrm{Cu(s)}$ , $\mathrm{E_{cell}}$ …MediumNumerical value
26 Feb 2021, Shift 2 · Q57Emf of the following cell at 298 K in V is $x \times 10^{-2}$ . $\mathrm{Zn|Zn^{2+}}$ (0.1 M) $\|$ $\mathrm{Ag^+}$ (0.01 M) $|$ Ag The value of…MediumNumerical value

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.