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Electrochemistry question

2023 · 29 Jan · Shift 1 · Q11

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JEE Main
Chemistry
Electrochemistry
2023 · 29 Jan · Shift 1 · Q11

Electrochemistry question

2023 · 29 Jan · Shift 1 · Q11

JEE MainChemistryElectrochemistryMCQ+4 / −1

The standard electrode potential

\mathrm{(M^{3+}/M^{2+})}

for V, Cr, Mn & Co are

-

0.26 V,

-

0.41 V, + 1.57 V and + 1.97 V, respectively. The metal ions which can liberate

\mathrm{H_2}

from a dilute acid are :

A
$\mathrm{Mn^{2+}}$ and $\mathrm{Co^{2+}}$
B
$\mathrm{V^{2+}}$ and $\mathrm{Mn^{2+}}$
C
$\mathrm{V^{2+}}$ and $\mathrm{Cr^{2+}}$
D
$\mathrm{Cr^{2+}}$ and $\mathrm{Co^{2+}}$

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