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| Q. |
When a spoon is to be electroplated with nickel the spoon is - |
| A. | dipped in a nickel sulphate solution |
| B. | made anode and a pure nickel rod, the cathode |
| C. | made cathode and a pure nickel red, the anode |
| D. | coated with nickel sulphate and dried |
| Answer» C. made cathode and a pure nickel red, the anode | |
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Explanation: Electroplating is the deposition by electrolysis of a coating of metal upon a conducting surface. The simplest system makes the object to be plated the negative electrode (cathode) or plate in a galvanic couple. Thus a spoon or other object may be connected by a wire to a plate of nickel. The process that occurs on the spoon is called reduction and, therefore, the spoon is also referred to as a cathode. |
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