Iodine exists in which form in iodised salt?

The correct order of acidic strength is

Justify,by giving reactions,that among halogens,fluorine is the best oxidant and among hydrohalic compounds,hydroiodic acid is the best reductant.

Which of the following pairs shows the highest bond dissociation enthalpy among halogens and the lowest bond dissociation enthalpy among hydrogen halides?

Concentrated $HNO_3$ reacts with iodine to give:

Assertion : The halogens absorb visible light.
Reason : All halogens are coloured.