The Cupellation process is a highly specific oxidative refining technique. It is primarily utilized — Metallurgy and Isolation of Elements Chemistry Question

💡 Solution & Explanation

Cupellation is used when a noble metal (like Silver or Gold) is contaminated with a highly oxidizable base metal impurity (like Lead). The impure metal is heated in a porous 'cupel' with a blast of air. The Lead impurity oxidizes to volatile Litharge ($PbO$), which escapes or is absorbed by the cupel, leaving pure Silver.