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

What is the gas liberated when alkaline formaldehyde solution is treated with $H_2 O_2$?

The starting material for convenient preparation of deuterated hydrogen peroxide $(D_2O_2)$ in the laboratory is:

Given below are two statements :
Statement $I$ : $H_2O_2$ is used in the synthesis of Cephalosporin.
Statement $II$ : $H_2O_2$ is used for the restoration of aerobic conditions to sewage wastes.
In the light of the above statements,choose the most appropriate answer from the options given below :

$A$ compound $(MO_2)$ of a group $1$ element $(M)$ is hydrolyzed to form $M^{+}$,$OH^{-}$,$X$,and $Y$. When $X$ reacts with $I_2$ in a basic medium,the products formed are $I^{-}$,water,and $Y$. Then $X$ and $Y$ are respectively:

Electrolysis of $X$ gives $Y$ at anode. Vacuum distillation of $Y$ gives $H_2O_2$. The number of peroxy $(O-O)$ bonds present in $X$ and $Y$ respectively are :