Question

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

विकल्प

• Fe and Ni

• Ag and Au

• Pb and Zn

• Se and Ag

Answer 1

During the process of electrolytic refining of copper, some metals present as impurity settle as anode mud. These are Ag and Au.

Explanation:

In electrolytic refining, pure copper is deposited at the cathode. Impure copper is taken as the anode. More reactive impurities like Fe and Ni dissolve in the solution. Less reactive metals like silver (Ag) and gold (Au) do not dissolve and settle down at the bottom of the anode as anode mud.