A) Haber's process of \[N{{H}_{3}}\] requires iron as catalyst
B) Friedel-Craft's reaction uses anhydrous \[AlC{{l}_{3}}\]
C) Hydrogenation of oils uses iron as catalyst
D) Oxidation of \[S{{O}_{2}}\] to \[S{{O}_{3}}\] requires \[{{V}_{2}}{{O}_{5}}\]
Correct Answer: C
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