Alumina is
Acidic
Basic
Amphoteric
None of these
(c) Alumina is amphoteric oxide, which reacts acid as well as base.
When $B_2H_6 + NH_3(excess)$ at very high temperature $(> 200\,^oC$) is formed
In the extraction of aluminium, bauxite is dissolved in cryolite because
The type of hybridisation of boron in diborane is
Which of the following compounds is formed by addition of mineral acid to an aqueous solution of borax ?
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