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Q.

Which of the following is the major ore of aluminium?

 A.

Monazite

 B.

Bauxite

 C.

Haematite

 D.

Magnetite

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Solution:
Option(B) is correct

Bauxite, a major aluminium ore. The red-brown colour is due to the presence of iron minerals. Bauxite is converted to aluminium oxide ($Al_2O_3$) via the Bayer process


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