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During the process of electrolyic refini...

During the process of electrolyic refining of copper some metals present as impurity settle as anode mud. These are

A

`Fe`and `Ni`

B

`Ag`and `Au`

C

`Sn`and `Ag`

D

`Pb`and `Zn`

Text Solution

Verified by Experts

The correct Answer is:
D
The impurities of more electropositive metals remain as ions in the bath whereas impurities of less electropositive metals `(Ag`and `Au)` remain unionized and settle down under the anode as anode mud or anode sludge.
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