Electrolysis and Storage Batteries
The active materials on the positive and negative plates of a fully charged lead-acid battery are

lead sulphate and lead
None of these
lead peroxide and lead
lead and lead peroxide

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Electrolysis and Storage Batteries
Life of the batteries is in the following ascending order.

Nickel-cadmium cell, Edison cell, lead-acid cell
Edison cell, Nickel-cadmium cell, lead-acid cell
Lead-acid cell, Edison cell, Nickel cadmium cell
Lead-acid cell, Nickel-cadmium cell, Edison cell

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