In basic medium,$H_{2}O_{2}$ exhibits which of the following reactions?
$A$. $Mn^{2+} \rightarrow Mn^{4+}$
$B$. $I_{2} \rightarrow I^{-}$
$C$. $PbS \rightarrow PbSO_{4}$
Choose the most appropriate answer from the options given below:

$A$ commercial sample of hydrogen peroxide is labelled as $10$ volume. Its percentage strength is nearly ............... $\%$

What product is formed when $I_2$ reacts with $H_2O_2$ in a basic medium?

From the following statements regarding $H_2O_2$,choose the incorrect statement:

What is the product of the reaction of $H_2O_2$ with $Cl_2$?

$A$ colourless liquid $A$ contains $H$ and $O$ elements only. It decomposes slowly on exposure to light. It is stabilised by mixing urea to store in the presence of light.
$(i)$ Suggest the possible structure of $A$.
$(ii)$ Write the chemical equation for its decomposition reaction in light.