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Question

Which of the following is not an ore of aluminium?

A
Bauxite
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B
Cryolite
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C
Kernite
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D
Corundum
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Solution

The correct option is C Kernite
Answer:- (C) Kernite
Kernite is an ore of Boron having chemical formula Na2B4O7.4H2O.
Bauxite - Al2O3.2H2O
Cryolite - Na3AlF6
Corundum - Al2O3(anhydrous)

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