$Hydrogen$ $peroxide$ is reduced by:

$H_2O_2$ is always stored in black bottles because

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?

Among the statements $(a) - (d)$,the correct ones are:
$(a)$ Decomposition of hydrogen peroxide gives dioxygen.
$(b)$ Like hydrogen peroxide,compounds such as $KClO_{3}$,$Pb(NO_{3})_{2}$,and $NaNO_{3}$ liberate dioxygen when heated.
$(c)$ $2$-Ethylanthraquinone is useful for the industrial preparation of hydrogen peroxide.
$(d)$ Hydrogen peroxide is used for the manufacture of sodium perborate.

Which of the following yields $H_2O_2$ upon oxidation?

What product is obtained by electrolysis of $50 \%$ solution of sulfuric acid on further hydrolysis?