Question

The process employed for the purification of copper with cuprous oxide as the impurity is:

• A. poling
• B. liquation
• C. electrolytic process
• D. oxidation

Answer 1

The correct option is A poling

Poling is a metallurgical method employed in the purification of copper which contains copper oxide as an impurity and also in the purification of tin ("Sn") which contains tin oxide (stannic oxide or "$Sn{O}_2$") as an impurity The process is done in two stages.

Hence, the correct option is $\left(A\right)$