Mohan wants a silver coating for his carbon magic stick. For accomplishing this he takes a battery, a container half filled with silver nitrate solution, a silver plate and his magic stick. But he is confused in connecting the battery terminals either to silver plate or magic stick. He should connect

His magic stick to negative terminal and silver plate to positive terminal.

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His magic stick to positive terminal and silver plate to negative terminal.

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Any of the two to any terminals.

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All of the above

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Solution

The correct option is A
His magic stick to negative terminal and silver plate to positive terminal.

The silver from silver nitrate solution deposits to the electrode connected to negative terminal of battery. So, he will connect the carbon stick to negative terminal of battery. The solution gets its silver from the electrode connected to the positive terminal of battery. So, he will connect the silver plate to positive terminal of battery.

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