The normality of $20$ volume solution of hydrogen peroxide is (in $N$)

$1 \ mL$ of $H_2O_2$ solution gives $10 \ mL$ of $O_2$ at $NTP$. It is ................ vol. $H_2O_2$.

What is the $O-O-H$ bond angle in the solid form of $H_2O_2$ (in $^{\circ}$)?

$A$ sample of $H_2O_2$ solution has a volume of $100 \, cm^3$ and it produces $1000 \, cm^3$ of $O_2$ gas at $STP$. What is the volume strength of the given $H_2O_2$ sample?

The normality of $10$ $V$ (volume) hydrogen peroxide is:

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