Electrolysis of a solution of MnSO4 in aqueous sulphuric acid is a method for the preparation of MnO2. Passing a current of 27 A for 4 hours gives 1 kg of MnO2. The current efficiency in this process is :

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100%

95.185%

80%

82.951%

answer is B.

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Detailed Solution

1000×2(55+32)=27×24×3600×η96500 η=0.951 =95.1%

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