When $KI$ is reacted with $O_3$ under aqueous condition,the product formed is:

The process of obtaining chlorine by the oxidation of $HCl$ with air is called ....

Given below are two statements: one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R).$
Assertion $(A):$ $ICl$ is more reactive than $I_{2}.$
Reason $(R):$ $I-Cl$ bond is weaker than $I-I$ bond.
In the light of the above statements,choose the most appropriate answer from the options given below:

Mercury on heating with aqua-regia gives

The bleaching action of bleaching powder is due to the formation of

The correct group of halide ions which can be oxidised by oxygen in acidic medium is