( A ) $Br_2$ reacts with hot and strong $NaOH$ solution to give $NaBr, NaBrO_4$ and $H_2O$
( B ) Ozone reacts with $SO_2$ to give $SO_3$
( C ) Silicon reacts with $NaOH (aq)$ in the presence of air to give $Na_2SiO_3$ and $H_2O$
( D ) $Cl_2$ reacts with excess of $NH_3$ to give $N_2$ and $HCl$