# The approx concentration of $H_2O_2$ perhydrol is

$\begin{array}{1 1}(a)\;30gm/litre\\(b)\;300gms/100ml\\(c)\;10gm/lit\\(d)\;300gm/litre\end{array}$

The approx concentration of $H_2O_2$ perhydrol is 300gm/litre
Hence (d) is the correct answer.