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| Q. |
The metals commonly used for electroplating are – |
| A. | Gold, Sodium and Chromium |
| B. | Chromium, Copper and Nickel |
| C. | Nickel, Lead and Chromium |
| D. | Gold, Sodium and Potassium |
| Answer» B. Chromium, Copper and Nickel | |
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Explanation: The process of electroplating takes place as metals in ionic form move from a positive to negative electrode. An electric current passing through the solution causes objects at the cathode or work piece to be coated by the metal in the solution. Electroplating is done for many reasons, usually to beautify, insulate or to protect and to increase the corrosion resistance, conductivity solder ability of metal objects. Plating protects by one of two ways, either sacrificially or mechanically. |
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