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

The decomposition of hydrogen peroxide is an example of

Calculate the strength of $20 \ V$ $H_2O_2$ in $g/L$.

To an aqueous solution of $AgNO_3$,some $NaOH_{(aq)}$ is added until a brown precipitate is obtained. To this,$H_2O_2$ is added dropwise. The precipitate turns black with the evolution of $O_2$. The black precipitate is:

In an alkaline medium,$H_2O_2$ exists as ...........

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