In the electrolytic refining of blister copper, the total number of main impurities, from the following,
Question:
In the electrolytic refining of blister copper, the total number of main impurities, from the following, removed as anode mud is
$\mathrm{Pb}, \mathrm{Sb}, \mathrm{Se}, \mathrm{Te}, \mathrm{Ru}, \mathrm{Ag}$, Au and $\mathrm{Pt}$
Solution:
Anode mud contains Sb, Se, Te, Ag, Au and Pt