Chemistry - Metallurgy Question with Solution | TestHub

Paragraph:Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcanthite $\left({\mathrm{CuSO}}_4\cdot 5{\mathrm{H}}_2\mathrm{O}\right)$, atacamite $\left({\mathrm{Cu}}_2\mathrm{Cl}(\mathrm{OH}{)}_3\right)$, cuprite $\left({\mathrm{Cu}}_2\mathrm{O}\right)$, copper glance $\left({\mathrm{Cu}}_2\mathrm{S}\right)$ and malachite $\left({\mathrm{Cu}}_2(\mathrm{OH}{)}_2{\mathrm{CO}}_3\right)$. However, 80\% of the world copper production comes from the ore chalcopyrite $\left({\mathrm{CuFeS}}_2\right)$. The extraction of copper from chalcopyrite involves partial roasting, removal of iron and self-reduction.