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B
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C
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D
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Solution
The correct option is D
Explanation of the correct answer:
The correct answer is option D:
Although it is also utilised as an industrial material, bauxite is predominantly a metallic mineral.
It is the sole mineral utilised in the large-scale manufacture of aluminium.
Aluminium ore is bauxite ().
The bauxite is refined to produce aluminium oxide, a white powder form from which aluminium may be recovered.
Bauxite deposits are mostly created by aluminous rock weathering; while some have been transported to their current locations, the majority are residual accumulations from which the majority of the other parent rock constituents, except alumina, have been leached.
Bauxite contains a variety of iron oxides, including hematite and goethite, , silicon dioxide from sand, , Kaolinite, and a trace amount of .
Explanation of the incorrect answers:
Options A, B, and C:
The impurities present in Bauxite do not include, , and .