The $K_a$ of $H_2O_2$ is of the order of:

Atomic hydrogen reacts with oxygen to give

Which of the following reactions is incorrect?

The oxidation states of the most electronegative element in the products of the reaction of $BaO_2$ with dilute $H_2SO_4$ are

Calculate the normality of $10$ volume $H_2O_2$ solution.

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 :