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

What is the amount of $H_2O_2$ in $gm$ present in $1 \, L$ of $1.5 \, N \, H_2O_2$ solution?

Which of the following compounds is a peroxide?

Which of the following is a true structure of $H_2O_2$?

The volume (in $mL$) of $10$ volume $H_2O_2$ solution required to completely react with $200 \ mL$ of $0.4 \ M \ KMnO_4$ solution in acidic medium is

$4 \ mL$ of '$X$ volume' $H_2O_2$ on heating gives $80 \ mL$ of oxygen at $STP$. The value of $X$ is: