Colour of the bead in borax bead test is mainly due to the formation of
metal oxides
boron oxide
metal metaborates
elemental boron
Which of the following properties describes the diagooal relalionship between boron and silicon?
Which of the following cation can not give borax bead test ?
Conc. $HN{O_3}$
Which of the following sublimes on heating?
In the purification of bauxite by Hall's process