Which of the following molecules can act as an oxidizing as well as a reducing agent?

The normality of $20$ volume solution of hydrogen peroxide is (in $N$)

Which of the following equations depicts the oxidizing nature of $H_{2}O_{2}$?

The $pH$ of a solution of $H_2O_2$ is $6.0$. Some chlorine gas is bubbled into this solution. Which of the following is correct?

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

What is the oxidation number of $O$ in $H_2O_2$?