3.2 COMPOUNDS OF BORON
All Questions
The chief ore of aluminium is
a)
Na<sub>3</sub>AlF<sub>6</sub>
b)
Al<sub>2</sub>O<sub>3</sub>.2H<sub>2</sub>O
c)
Al<sub>2</sub>O<sub>3</sub>
d)
Al<sub>2</sub>O<sub>3</sub>.2H<sub>2</sub>O
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