A) \[Si{{O}_{2}}\]
B) \[F{{e}_{2}}{{O}_{3}}\]
C) \[{{K}_{2}}S{{O}_{4}}\]
D) \[NaF\]
Correct Answer: B
Solution :
The main impurities found in red bauxite is that of ferrite \[(F{{e}_{2}}{{O}_{3}})\] while silica is the chief impurity in white bauxite.
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