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Pick out the wrong statement. | |
A. | In Parke's process, zinc is added to remove silver from lead. [Wrong Answer] |
B. | In the Pidgeon process of producing magnesium, powdered ferro-silcon is used as the reducing agent. [Wrong Answer] |
C. | Molten lead is used for shock cooling of the zinc vapours in the zinc blast furnace. [Wrong Answer] |
D. | Pure copper electrodes are used as anode for electro-refinning of copper. [Correct Answer] |