Perhydrol is an aqueous solution of

The volume strength (in $L$) of $3$ $N$ $H_2O_2$ is approximately

Decomposition of $H_2O_2$ is prevented by

$I. \, H_2O_2 + O_3 \rightarrow H_2O + 2O_2$
$II. \, H_2O_2 + Ag_2O \rightarrow 2Ag + H_2O + O_2$
The role of hydrogen peroxide in the above reactions is respectively:

The dihedral angles in gaseous and solid phases of $H_2O_2$ molecule respectively are

$6.8 \, g$ of $H_2O_2$ is dissolved in $0.2 \, L$ of solution. Then the solution will be labelled as ............. $V$ volume strength.