A) Dolomite
B) Bauxite
C) Felspar
D) Cryolite
E) None of these
Correct Answer: A
Solution :
Dolomite is an ore of magnesium. Bauxite \[=(A{{l}_{2}}{{O}_{3}}\cdot 2{{H}_{2}}O)\] Felspar\[=(KAlS{{i}_{3}}{{O}_{8}})\] Cryolite \[=(N{{a}_{3}}Al{{F}_{6}})\]
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