JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyConceptual

JEE Main 30 June 2022, Shift 1, Chemistry Q65

Question 65 of 90 in this shift, Chemistry question 5 of 30, Section A.

In which of the following half cells, electrochemical reaction is pH dependent ?

(1) $\mathrm{Pt\,|\,Fe^{3+},\,Fe^{2+}}$
(2) $\mathrm{MnO_4^-\,|\,Mn^{2+}}$ Official answer
(3) $\mathrm{Ag\,|\,AgCl\,|\,Cl^-}$
(4) $\frac{1}{2}\mathrm{F_2\,|\,F^-}$

Official answer

Option 2

NTA final key.

Chapter: Electrochemistry
Topic: Nernst Equation
Idea tested: pH Dependence of Electrode Potential

Same idea in other shifts

Asked 6× in all

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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.