Which of the following statements is correct?

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 hydrogen peroxide act as a reducing agent?

In which of the following compounds is a peroxide bond present?

Which of the following is incorrect regarding $H_2O_2$?

The bond angle $H-O-O$ in $H_2O_2$ in the gaseous phase is (in $^{\circ}$)