What is the product formed when $I_2$ reacts with $H_2O_2$ in a basic medium?

The strengths of $5.6$ volume hydrogen peroxide (of density $1 \ g/mL$) in terms of mass percentage and molarity $(M)$,respectively,are:
(Take molar mass of hydrogen peroxide as $34 \ g/mol$)

Which of the following reagents is known as Fenton's reagent?

The concentration of a dilute solution of $H_2O_2$ can be achieved by:

The compound$(s)$ which have $-O-O-$ bond$(s)$ is/are:

$H_2O_2$ is always stored in black bottles because