Which one of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch, electric shavers etc?

Nickel and cadmium

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Zinc and carbon

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Lead peroxide and lead

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Iron and cadmium

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Solution

The correct option is A Nickel and cadmium
Option: (a)

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Pick the odd word out of the following: lead, arsenic, chlorine, cadmium, mercury, nickel.

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I : Dry cell battery

II : Lead-storage (acid) battery

III : Nickel-cadmium battery

IV : Lithium battery

V : Fuel cell

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