The solubility of iodine in water increases in the presence of

When chlorine gas is passed over dry slaked lime,the product formed is ...........

$Br_2 + NaOH \xrightarrow{R.T.} Y + Z$
If $Y$ gives a precipitate with $AgNO_3$,then $Z$ does not undergo a reaction with:

The reaction of concentrated $HNO_3$ with iodine produces ....

In the following reaction,identify the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T.$:
$\underline{I}OF_5 + 2H_2O \longrightarrow HIO_4 + 5HF$

The mixture of conc. $HCl$ and potassium chlorate on heating gives