What is the concentration of $20$ volume $H_2O_2$ in $g/L$?

Complete the following chemical reactions.
$i$. $PbS_{(s)} + H_2O_{2_{(aq)}} \rightarrow$
$ii$. $MnO_{4_{(aq)}}^{-} + H_2O_{2_{(aq)}} \rightarrow$
$iii$. $CaO_{(s)} + H_2O_{(g)} \rightarrow$
$iv$. $AlCl_{3_{(s)}} + H_2O_{(l)} \rightarrow$
$v$. $Ca_3N_{2_{(s)}} + H_2O_{(l)} \rightarrow$
Classify the above into $a$. hydrolysis,$b$. redox,and $c$. hydration reactions.

Assertion: Sulfur is oxidized by $H_2O_2$ in the presence of $Fe(III)$.
Reason: $Fe(III)$ catalyzes the oxidation of sulfur to sulfate.

$(i)$ 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.

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

Which of the following statements is correct?