Chemistry
During silver plating of an article using potassium argento-cyanide as an electrolyte, the anode material should be :
Cu
Ag
Pt
Fe
Electrolysis
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Answer
Ag
Reason — During silver plating using potassium argento-cyanide as an electrolyte, the anode should be block of pure clean silver.
The anode dissolves, supplying Ag⁺ ions to the electrolyte. These Ag⁺ ions then get reduced at the cathode (the article to be plated) and deposited as metallic silver.
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