Which of the following compounds can produce $H_2O_2$ on electrolysis followed by hydrolysis?

Which of the following statements is correct?

The dipole moment of $H_2O_2$ is more than that of $H_2O$,but $H_2O_2$ is not a good solvent because:

Consider the following reaction:
$2 HSO_{4}^{-}(aq)$ $\xrightarrow[\text{(2) Hydrolysis}]{\text{(1) Electrolysis}} H_{2}S_{2}O_{8}(aq)$ $\xrightarrow{\text{Hydrolysis}} 2 HSO_{4}^{-}(aq) + 2 H^{+}(aq) + A(aq)$
The dihedral angle in product $A$ in its solid phase at $110 \ K$ is ....$^{\circ}$

$(i)$ Give a method for the manufacture of hydrogen peroxide and explain the reactions involved therein.
$(ii)$ Illustrate oxidising,reducing and acidic properties of hydrogen peroxide with equations.

Which one of the following does $NOT$ readily give oxygen upon heating?