Statement 1 : Mercury cells give a constant voltage throughout its life.
Statement 2 : Electrolyte KOH is not involved in the reaction.

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Both statements 1 and 2 are correct

Statement 1 is correct statement 2 is incorrect

Statement 1 is incorrect statement 2 is correct

Both statements 1 and 2 are incorrect

answer is C.

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Detailed Solution

Mercury cell gives the constant voltage throughout its life because the overall reaction does not involve any ion in the solution, concentration of which charges during its
whole life.

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