JEE Main 2024 · ChemistryMultiple choiceSingle correctMediumCalculation

JEE Main 4 April 2024, Shift 1, Chemistry Q65

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

What pressure (bar) of

\mathrm{H_2}

would be required to make emf of hydrogen electrode zero in pure water at 25°C ?

(1) $10^{-7}$
(2) $10^{-14}$ Official answer
(3)1
(4)0.5

Official answer

Option 2

NTA final key.

Chapter: Electrochemistry
Topic: Nernst Equation
Idea tested: Single Electrode Nernst

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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.