Calculate the volume strength of $1.5 \ N \ H_2O_2$.

The species that does not contain peroxide ion is

Three vessels $(A, B, C)$ contain $H_2O_2$ solution. In vessel $A$,$500 \ mL$ of $10 \ vol \ H_2O_2$ is present. $100 \ mL$ of $30 \ vol \ H_2O_2$ is present in vessel $B$. Vessel $C$ is filled with $250 \ mL$ of $2 \ M \ H_2O_2$. The weight (in $g$) of $H_2O_2$ present in these vessels follows the order:

In which of the following reactions does $H_2O_2$ act as a reductant?

$H_2O_2$ acts as a reducing agent in

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