JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyConceptual

JEE Main 28 July 2022, Shift 1, Chemistry Q70

Question 70 of 90 in this shift, Chemistry question 10 of 30, Section A.

Which of the following has least tendency to liberate

\mathrm{H_2}

from mineral acids ?

(1)CuOfficial answer
(2)Mn
(3)Ni
(4)Zn

Official answer

Option 1

NTA final key (2022 Session 2).

Chapter: Electrochemistry
Topic: Nernst Equation
Idea tested: Standard Cell Potential

Same idea in other shifts

Asked 6× in all

2 Apr 2026, Shift 1 · Q57An electrochemical cell is constructed using half cells in the direction of spontaneous change…MediumSingle correct
3 Apr 2025, Shift 2 · Q56The standard cell potential ( $\mathrm{E^{\ominus}_{cell}}$ ) of a fuel cell based on the oxidation of methanol in air that has been used to…MediumSingle correct
9 Apr 2024, Shift 1 · Q85The standard reduction potentials at 298 K for the following half cells are given below :…MediumNumerical value
30 Jan 2024, Shift 2 · Q65Reduction potential of ions are given below: $\mathrm{ClO_4^-}$ $E^\circ = 1.19\ V$ ; $\mathrm{IO_4^-}$ $E^\circ = 1.65\ V$ ;…EasySingle correct
2 Apr 2017 (offline) · Q36Given $E^\circ_{\mathrm{Cl_2/Cl^-}}=1.36$ V, $E^\circ_{\mathrm{Cr^{3+}/Cr}}=-0.74$ V $E^\circ_{\mathrm{Cr_2O_7^{2-}/Cr^{3+}}}=1.33$ V,…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 42 of the 174 JEE Main shifts held from 2017 to 2026.