In which of the following reactions does hydrogen peroxide act as a reducing agent?

Write chemical reactions to justify that hydrogen peroxide $(H_{2}O_{2})$ can function as an oxidising as well as a reducing agent.

The oxidation states of the most electronegative element in the products of the reaction of $BaO_2$ with dilute $H_2SO_4$ are

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

Which of the following molecules can act as an oxidizing as well as a reducing agent?

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: