Concentrated $HNO_3$ reacts with iodine to give:

Which of the following are not in accordance with the property mentioned against them?
$I$. $F_2 > Cl_2 > Br_2 > I_2$ : Oxidising power
$II$. $MI > MBr > MCl > MF$ : Ionic character of metal halide
$III$. $F_2 > Cl_2 > Br_2 > I_2$ : Bond dissociation enthalpy
$IV$. $HI < HBr < HCl < HF$ : Hydrogen-halogen bond strength

Which of the following species represent a mixed anhydride?

When potassium dichromate crystals are heated with concentrated $HCl$,which gas is evolved?

Which of the following reacts most slowly with nitric acid?

Chlorine on reaction with hot and concentrated sodium hydroxide gives