Which of the following can be used to prevent the decomposition of $H_{2}O_{2}$?

Which of the following compounds can produce $H_2O_2$ on electrolysis followed by hydrolysis?

$A$ commercial sample of hydrogen peroxide is labeled as $10$ volume. What is its percentage concentration approximately (in $\%$)?

In which of the following reactions does $H_2O_2$ act as a reducing agent?
$(I)$ $H_2O_2 + 2H^{+} + 2e^- \to 2H_2O$
$(II)$ $H_2O_2 \to O_2 + 2H^{+} + 2e^-$
$(III)$ $H_2O_2 + 2e^- \to 2OH^{-}$
$(IV)$ $H_2O_2 + 2OH^{-} \to O_2 + 2H_2O + 2e^-$

The strength of $50$ volume solution of hydrogen peroxide is $...... \ g/L$ (Nearest integer). Given: Molar mass of $H_2O_2$ is $34 \ g \ mol^{-1}$. Molar volume of gas at $STP = 22.7 \ L$.

Which one of the following gives the highest volume of $O_2$ at $STP$ on complete decomposition?