The chemical formula of diaspore, an ore of aluminium, is:
A
Al2O3.3H2O
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B
Al2O3.2H2O
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C
Al2O3.H2O
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D
Al2O3
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Solution
The correct option is DAl2O3.H2O Corundum is non-hydrated aluminium oxide. Diaspore is singly hydrated aluminium oxide. Bauxite is doubly hydrated aluminium oxide. Gibbsite is triply hydrated aluminium oxide.