Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The reaction at cathode in the cells commonly used in clocks involves.
A
reduction of 
from +7 to +2
from +7 to +2 B
reduction of 
from +4 to +3
from +4 to +3 C
oxidation of 
from +3 to +4
from +3 to +4
D
oxidation of 
from +2 to +7
from +2 to +7
Text Solution
Verified by ExpertsThe correct answer is:
B
In the cathode reaction manganese 
is reduced from the +4 oxidation state to the +3 state.
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