1.

Which of the following reaction occurs at the cathode of a common dry cell

Answer»

`MntoMn^(2+)+2E^(-)`
`2MnO_(2)+Zn^(2+)+2e^(-)toZnMn_(2)O_(4)`
`2ZnO_(2)+Mn^(2+)+2e^(-)toMnZn_(2)O_(4)`
`ZntoZn^(2+)+2e^(-)`

Solution :In COMMON dry cell.
Anode: `ZntoZn^(++)+2e^(-)`
CATHODE: `2MnO_(2)+Zn^(++)+2e^(-)toZnMn_(2)O_(4)`.


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