The $H-O-O$ bond angle in $H_2O_2$ is ............. $^o$

The oxide that gives $H_2O_2$ on treatment with a dilute acid is

The $pH$ of a solution of $H_2O_2$ is $6.0$. Some chlorine gas is bubbled into this solution. Which of the following is correct?

$6.8 \, g$ of $H_2O_2$ is dissolved in $0.2 \, L$ of solution. Then the solution will be labelled as ............. $V$ volume strength.

In the following reaction,identify the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T.$:
${H_2}{\underline{S}}_2{O_8} + {H_2}O \longrightarrow {H_2}S{O_4} + {H_2}O_2$

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