Electro deposition of metals i.e. electroplating is never done on_____________________?
Correct answer: B. Refractories
- A. Metals
- B. Refractories
- C. Alloys
- D. Non-metals
Explanation
In the conventional classification used for electroplating, refractory materials are not directly suitable as cathodes because they are generally nonconducting and cannot receive deposited metal. Metals and alloys conduct current directly, while special surface activation can allow some non-metals to be plated.
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