The molecular weight of hydrogen peroxide is $34$. What is the unit of molecular weight?

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:

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

Which of the following yields $H_2O_2$ upon oxidation?

$H_2O_2$ is always stored in black bottles because

Which statement regarding $H_2O_2$ is correct?