In which of the following, a salt of the type $KMO_2$ is obtained?
Acedic strength of Boron trihalide are in order of
Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out in the presence of
Colour of the bead in borax bead test is mainly due to the formation of
Aluminium chloride in acidified aqueous solution forms an ion having geometry