A) Copper
B) Iron
C) Aluminium
D) Magnesium
Correct Answer: B
Solution :
The less electropositive metals such as Fe, Zn, Sn etc are extracted from their oxides by reduction with carbon or coal. \[F{{e}_{2}}{{O}_{3}}+3C\xrightarrow{{}}2Fe+3CO\] \[F{{e}_{2}}{{O}_{3}}+3CO\xrightarrow{{}}\underset{iron}{\mathop{2Fe}}\,+3C{{O}_{2}}\]
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