A) Fe
B) Ag
C) Al
D) Cu
Correct Answer: D
Solution :
Copper metallurgy involves bessemerisation. In bessemerisation converter, the impurities of Ferric Oxide forms slag with Silica and Copper Oxide gets reduced to give blister copper. \[FeO+Si{{O}_{2}}\xrightarrow{{}}\underset{\text{Slag}}{\mathop{FeSi{{O}_{3}}}}\,\] \[C{{u}_{2}}S+C{{u}_{2}}O\xrightarrow{{}}6Cu\downarrow +S{{O}_{2}}\uparrow \]
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