$H_2O_2$ in basic medium reduces $I_2$ to form:

The structure of $H_2O_2$ is

The volume strength of $8.9 \, M \, H_{2}O_{2}$ solution calculated at $273 \, K$ and $1 \, atm$ is.........
$(R = 0.0821 \, L \, atm \, K^{-1} \, mol^{-1})$ (rounded off to the nearest integer)

The products obtained from a reaction of hydrogen peroxide and acidified potassium permanganate are

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

Which one of the following is reduced by hydrogen peroxide in acid medium?