In a lead-storage cell, the emf

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increases with increase in the percentage of $H_{2} {SO}_{4}$

decreases with increase in the percentage of $H_{2} {SO}_{4}$

does not change with increase in the percentage of $H_{2} {SO}_{4}$

is not affected by the change in temperature of the cell

answer is A.

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Detailed Solution

In a lead-storage cell, the emf increases with increase in the percentage of $H_{2} {SO}_{4}$

A storage cell with a lead dioxide positive plate, a spongy lead negative plate, and diluted sulfuric acid as the electrolyte is a lead-storage cell.

Hence option A is correct

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