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Which of the following cells has a const...

Which of the following cells has a constant voltage through-out its life?

A

Leclanche cell

B

Daniell cell

C

Mercury cell

D

Electrolytic cell

Text Solution

Verified by Experts

The correct Answer is:
C
Because there is no change in electrolyte composi-tion during operation (the overall cell reaction involves only solid substances) the mercury cell provides a more constant voltage `(1.35 V)` than other cells.
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