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?

Which of the following statements regarding $H_2O_2$ is correct?

Hydrolysis of peroxo-disulphuric acid $(H_2S_2O_8)$ gives

Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R.$
Assertion $A:$ The dihedral angle in $H_{2}O_{2}$ in the gaseous phase is $90.2^{\circ}$ and in the solid phase is $111.5^{\circ}$.
Reason $R:$ The change in dihedral angle in the solid and gaseous phases is due to the difference in the intermolecular forces.
Choose the most appropriate answer from the options given below for $A$ and $R$.

What is the order of $K_a$ for $H_2O_2$?

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