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Electrochemistry question

2024 · 5 Apr · Shift 1 · Q18

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Electrochemistry
2024 · 5 Apr · Shift 1 · Q18

Electrochemistry question

2024 · 5 Apr · Shift 1 · Q18

JEE MainChemistryElectrochemistryMCQ+4 / −1

The reaction at cathode in the cells commonly used in clocks involves.

A
oxidation of $\mathrm{Mn}$ from +2 to +7
B
reduction of $\mathrm{Mn}$ from +4 to +3
C
oxidation of $\mathrm{Mn}$ from +3 to +4
D
reduction of $\mathrm{Mn}$ from +7 to +2

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