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Which of the following is the voltage output of a mercury cell?(a) 1.55V(b) 1.35V(c) 2.55V(d) 1VThe question was asked in semester exam.This interesting question is from Electrochemistry topic in chapter Electrochemistry of Chemistry – Class 12

Answer» RIGHT answer is (b) 1.35V

To explain I would say: Mercury batteries USE a reaction between mercuric oxide and ZINC in an alkaline electrolyte to PRODUCE electricity. Its voltage during discharge is a constant 1.35V. The common dry cell, on the other HAND, provides a voltage of 1.5V.


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