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Question
Which one of the following statements is correct regarding the dry cell?
(P) Zinc container acts as an anode in dry cell.
(Q) Zinc container touches the paste of MnO2 and carbon.
(R) Dry cell can be charged easily.
(S) Graphite rod acts as a cathode in dry cell.
Options
Only (P) and (R)
Only (Q) and (R)
Only (P) and (S)
Only (Q) and (S)
Solution
Only (P) and (S)
Explanation:
A dry cell consists of a zinc container acting as the negative terminal (anode) and a carbon (graphite) rod with a metal cap serving as the positive terminal (cathode). Between the positive and negative terminals, carbon particles and ammonium chloride coexist. When the cell's chemical contents are depleted, it ceases to generate energy. The external electricity supply does not replenish these contents. As a result, the cell cannot be recharged or reused.
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