Given $E^\circ_{\mathrm{Cl_2/Cl^-}}=1.36$ V, $E^\circ_{\mathrm{Cr^{3+}/Cr}}=-0.74$ V $E^\circ_{\mathrm{Cr_2O_7^{2-}/Cr^{3+}}}=1.33$ V, $E^\circ_{\mathrm{MnO_4^-/Mn^{2+}}}=1.51$ V. Among the following, the strongest reducing agent is :

JEE Main 2017 · ChemistryMultiple choiceSingle correctEasyApplication

JEE Main 2 April 2017 (offline), Chemistry Q36

Question 36 of 90 in this shift, Chemistry question 6 of 30.

Given

E^\circ_{\mathrm{Cl_2/Cl^-}}=1.36

E^\circ_{\mathrm{Cr^{3+}/Cr}}=-0.74

E^\circ_{\mathrm{Cr_2O_7^{2-}/Cr^{3+}}}=1.33

E^\circ_{\mathrm{MnO_4^-/Mn^{2+}}}=1.51

V. Among the following, the strongest reducing agent is :

(1) $\mathrm{Cr^{3+}}$
(2) $\mathrm{Cl^-}$
(3) $\mathrm{Cr}$ Official answer
(4) $\mathrm{Mn^{2+}}$

Official answer

Option 3

CBSE answer key (25/04/2017, used for result).

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

Same idea in other shifts

Asked 13× in all

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Question text from the official JEE Main paper published by NTA (CBSE ran the 2017 exam); 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.