Estimation of ozone can be made quantitatively by which of the following?

What is the correct order of $\mathrm{O}-\mathrm{O}$ bond length in ${\mathrm{O}}_2, {\mathrm{H}}_2{\mathrm{O}}_2$ and ${\mathrm{O}}_3$?

Ozone is a powerful oxidising agent. It is the atomic oxygen that brings about the oxidation.

$\underset{\left(\mathrm{Ozone}\right)}{{\mathrm{O}}_3\left(\mathrm{g}\right)} \to \underset{\left(\mathrm{Dioxygen}\right)}{{\mathrm{O}}_2\left(\mathrm{g}\right)} +\underset{\left(\mathrm{Atomic} \mathrm{oxygen}\right)}{ \left[\mathrm{O}\right]\left(\mathrm{g}\right)}$

Molecular oxygen is set free. Select the incorrect statements from the following.