Chemistry - Metallurgy Question with Solution | TestHub

Extraction of Zinc from Zinc blende is achieved by roasting followed by reduction with carbon as follows
$\mathrm{Z}\mathrm{n}\mathrm{S}+\frac{3}{2}{\mathrm{O}}_2\stackrel{\mathrm{\Delta }}{\to }\mathrm{Z}\mathrm{n}\mathrm{O}+\mathrm{S}{\mathrm{O}}_2$
$\mathrm{Z}\mathrm{n}\mathrm{S}+2{\mathrm{O}}_2\stackrel{\mathrm{\Delta }}{\to }\mathrm{Z}\mathrm{n}\mathrm{S}{\mathrm{O}}_4\stackrel{\mathrm{\Delta }}{\to }\mathrm{Z}\mathrm{n}\mathrm{O}+\mathrm{S}{\mathrm{O}}_2+\frac{1}{2}{\mathrm{O}}_2$
$\mathrm{Z}\mathrm{n}\mathrm{O}+\mathrm{C}\stackrel{\mathrm{\Delta }}{\to }\mathrm{Z}\mathrm{n}+\mathrm{C}\mathrm{O}$