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Q.

Which is (are) ore(s) of aluminium

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a

Bauxite

b

Malachite

c

Cuprite

d

Cryolite

answer is A, B.

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Detailed Solution

Cryolite - Na3AlF6
Bauxite - Al2O3.2H2O
Malachite - CuCO3Cu(OH)2
Cuprite - Cu2O

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Which is (are) ore(s) of aluminium