Which one of the following pairs of materials serve as electrodes in chargeable batteries commonly used in devices such as torchlights, electric shavers etc.?
(A) Nickel and Cadmium
(B) Zinc and Carbon
(C) Lead peroxide and Lead
(D) Iron and Cadmium
Important Facts
Nickel-cadmium (NiCd) batteries use nickel and cadmium as electrodes.
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