The reaction at cathode in the cells commonly used in clocks involves.
Solution
<p>In the cells commonly used in clocks, specifically alkaline batteries, the reaction at the cathode involves the reduction of manganese dioxide (MnO<sub>2</sub>). The manganese in MnO<sub>2</sub> is initially in the +4 oxidation state, and it gets reduced to the +3 oxidation state. Thus, the correct reaction occurring at the cathode can be represented as follows:</p>
<p>The correct answer is:</p>
<p>Option B<br>reduction of $\mathrm{Mn}$ from +4 to +3</p>
About this question
Subject: Chemistry · Chapter: Electrochemistry · Topic: Electrochemical Cells
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