During the process of electrolytic refining of copper, some metals present as impurity settle as 'anode mud'. These are
A.
$$Sn$$ and $$Ag$$
B.
$$Pb$$ and $$Zn$$
C.
$$Ag$$ and $$Au$$
D.
$$Fe$$ and $$Ni$$
Answer :
$$Ag$$ and $$Au$$
Solution :
In the electrolytic refining of copper the more electropositive impurities like $$Fe,Zn,Ni,Co,$$ etc. dissolve in the solution and less electropositive impurities such as $$Ag,Au$$ and $$Pt$$ collect below the anode in the form of anodic mud.
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