Chemistry - Metallurgy Question with Solution | TestHub

(A) ${\mathrm{SnO}}_2\underset{\text{ Reduction }}{\overset{\text{ Carbon }}{\to }}\mathrm{Sn}$→

${\mathrm{SnO}}_2+2C\to \mathrm{Sn}+2CO\uparrow$

${\mathrm{SnO}}_2+2CO\to \mathrm{Sn}+2C{O}_2\uparrow$

(B) ${\mathrm{Fe}}_2{\mathrm{O}}_3\underset{\text{ Reduction }}{\overset{\text{ Carbon }}{\to }}2\mathrm{Fe}$

${\mathrm{Fe}}_2{\mathrm{O}}_3+3C\to 2\mathrm{Fe}+3CO\uparrow$

${\mathrm{Fe}}_2{\mathrm{O}}_3+3CO\to 2\mathrm{Fe}+3C{O}_2\uparrow$

(C) ${\mathrm{Al}}_2{\mathrm{O}}_3\underset{\text{ Reduction }}{\overset{\text{ Electrolytic }}{\to }}2\mathrm{Al}$

In no process carbon is used as reducing agent.