A) \[ZnC{{O}_{3}}\to ZnO+C{{O}_{2}}\]
B) \[F{{e}_{2}}{{O}_{3}}+3C\to 2Fe+3CO\]
C) \[2PbS+3{{O}_{2}}\to 2PbO+2S{{O}_{2}}\]
D) \[A{{l}_{2}}{{O}_{3}}.2{{H}_{2}}O\to A{{l}_{2}}{{O}_{3}}+2{{H}_{2}}O\]
Correct Answer: C
Solution :
[c] Roasting involves heating the ore strongly in presence of excess of air\[({{O}_{2}})\].
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