The element which can displace three other halogens from their compound is

Match the following molecules with their respective colours:

$A$. $F_2$	$I$. Red
$B$. $Cl_2$	$II$. Violet
$C$. $Br_2$	$III$. Yellow
$D$. $I_2$	$IV$. Greenish yellow

The anhydride of the oxoacid $HOCl$ is

Which of the following reagents does not oxidize $HCl$?

Affinity for hydrogen decreases in the group from fluorine to iodine. Which of the halogen acids should have the highest bond dissociation enthalpy?

The mixture of concentrated $HCl$ and $HNO_3$ made in $3:1$ ratio contains