$H_2O_2$ is always stored in black bottles because

The substance used as a bleaching agent for washing clothes is .....

$A$ commercial sample of hydrogen peroxide is labeled as $10$ volume. Its percentage concentration is approximately ............... $\%$.

The volume of oxygen liberated from $0.68 \ g$ of $H_2O_2$ is ............. $mL$ at $STP$.

The last drop of water can be removed from $H_2O_2$ by

In which of the following reactions does $H_2O_2$ act as an oxidising agent (either in acidic,alkaline,or neutral medium)?
$(i)$ $2Fe^{2+} + H_2O_2 \rightarrow$
$(ii)$ $2MnO_4^{-} + 6H^{+} + 5H_2O_2 \rightarrow$
$(iii)$ $I_2 + H_2O_2 + 2OH^{-} \rightarrow$
$(iv)$ $Mn^{2+} + H_2O_2 \rightarrow$