Q.

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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a

Both statements 1 and 2 are correct

b

Both statements 1 and 2 are incorrect

c

Statement 1 is correct statement 2 is incorrect

d

Statement 1 is incorrect statement 2 is correct

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