$H_2O_2$ can be used as:

$H_2O_2$ cannot be used for which of the following purposes?

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

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.

The decomposition of hydrogen peroxide is an example of

Reaction $H_2S_2O_{8(aq)} \xrightarrow{H_2O} 2H_2SO_4 + x.$ What is product $x$?