Chemistry - Metallurgy Question with Solution | TestHub

For Option (B): Both reactions represent the self-reduction of lead, yielding lead metal (Pb) as the product.

$$PbS+2PbO\stackrel{\Delta }{\to }3\mathbf{Pb}+S{O}_2$$

$$PbS+PbS{O}_4\stackrel{\Delta }{\to }2\mathbf{Pb}+2S{O}_2$$

For Option (D): Both chemical processes yield zinc oxide (ZnO) as the metal-containing product.

$$CalcinationofCalamine:ZnC{O}_3\stackrel{\Delta }{\to }\mathbf{ZnO}+C{O}_2$$

$$RoastingofSphalerite:2ZnS+3O_2\stackrel{\Delta }{\to }2\mathbf{ZnO}+2S{O}_2$$