Tap water is a good conductor of electricity.

In the process of electrolysis of water, water splits up into hydrogen and oxygen gas.

Iron objects are coated with nickel by the process of galvanizing.

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Name given to the electrode in an electrolytic cell connected to the negative terminal of the battery: anode/cathode

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Gas collected over anode during electrolysis of water is hydrogen/oxygen.

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The electrical circuit through which current flows is the closed/open circuit.