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Saturday, 31 October

JEE Main 2023 · ChemistryNumerical answerNumerical valueMediumConceptual

JEE Main 11 April 2023, Shift 2, Chemistry Q86

Question 86 of 90 in this shift, Chemistry question 26 of 30, Section B.

The number of correct statements from the following is _______ A. Ecell\mathrm{E_{cell}} is an intensive parameter B. A negative EΘ\mathrm{E^{\Theta}} means that the redox couple is a stronger reducing agent than the H+/H2\mathrm{H^+/H_2} couple. C. The amount of electricity required for oxidation or reduction depends on the stoichiometry of the electrode reaction. D. The amount of chemical reaction which occurs at any electrode during electrolysis by a current is proportional to the quantity of electricity passed through the electrolyte.

Official answer

4

NTA final key.

Chapter
Electrochemistry
Topic
Nernst Equation
Idea tested
Standard Cell Potential

Same idea in other shifts

Asked 13× in all
  1. 2 Apr 2026, Shift 1 · Q57An electrochemical cell is constructed using half cells in the direction of spontaneous change…MediumSingle correct
  2. 3 Apr 2025, Shift 2 · Q56The standard cell potential (Ecell⊖\mathrm{E^{\ominus}_{cell}}) of a fuel cell based on the oxidation of methanol in air that has been used to…MediumSingle correct
  3. 5 Apr 2024, Shift 2 · Q64For the electro chemical cell M∣M2+∣∣X∣X2−\mathrm{M|M^{2+}||X|X^{2-}} If E(M2+/M)0=0.46 V\mathrm{E^0_{(M^{2+}/M)}} = 0.46\ \mathrm{V} and…MediumSingle correct
  4. 9 Apr 2024, Shift 1 · Q85The standard reduction potentials at 298 K for the following half cells are given below :…MediumNumerical value
  5. 30 Jan 2024, Shift 2 · Q65Reduction potential of ions are given below: ClO4−\mathrm{ClO_4^-} E∘=1.19 VE^\circ = 1.19\ V; IO4−\mathrm{IO_4^-} E∘=1.65 VE^\circ = 1.65\ V;…EasySingle correct
  6. 6 Apr 2023, Shift 2 · Q86The standard reduction potentials at 298 K for the following half cells are given below:…MediumNumerical value
  7. 28 Jul 2022, Shift 1 · Q70Which of the following has least tendency to liberate H2\mathrm{H_2} from mineral acids ?EasySingle correct
  8. 30 Jul 2022, Shift 2 · Q39The Eo\mathrm{E^o} (volt) values are : Al3+/Al\mathrm{Al^{3+}/Al}, −1.66-1.66, Sc3+/Sc\mathrm{Sc^{3+}/Sc}, −2.08-2.08, Fe3+/Fe2+\mathrm{Fe^{3+}/Fe^{2+}},…EasySingle correct

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.