Which one of the following is reduced by hydrogen peroxide in acid 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 $34 \ g/mol$)

Hydrogen peroxide $(H_2O_2)$ can be used as:

In which of the following reactions does $H_2O_2$ act as a reductant?

The $pH$ of an $H_2O_2$ solution is $6$. If some chlorine gas is passed through it,which of the following statements is correct?

In which of the following reactions,$H_2O_2$ acts as a reducing reagent?