Q.

Which of the following metals can deposit copper from copper sulphate solution?

A. platinum
B. Mercury
C. Iron
D. Gold
Answer» C. Iron
Explanation: The iron displaces copper from its salt, to make iron sulfate solution and deposit a thin coating of metallic copper on the surface of the metal. In general, any metal higher than copper in the "electromotive series" will displace copper from copper sulfate solution.
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