A) chemical method
B) froth floatation process
C) magnetic method
D) none of the above
Correct Answer: A
Solution :
Bauxite, \[\text{A}{{\text{l}}_{\text{2}}}{{\text{O}}_{\text{3}}}\text{.2}{{\text{H}}_{\text{2}}}\text{O}\]is an ore of aluminium. It is- concentrated by chemical method.
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