The species, having bond angles of $120^o $ is
$ClF_3$
$NCl_3$
$BCl_3$
$PH_3$
Which of following salt does not give borax bead test
Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out in the presence of
Complete the following chemical equations :
$Z + 3LiAl{H_4} \to X + 3LiF + 3Al{F_3}$
$X + 6{H_2}O \to Y + 6{H_2}$
$3X + 3{O_2}\xrightarrow{\Delta }{B_2}{O_3} + 3{H_2}O$
Is boric acid a protic acid? Explain.
Which of the following compound does not show the amphoteric behaviour