# The volume strength of $3N-H_2O_2$ solution is

$\begin{array}{1 1}(a)\;11.2v\\(b)\;8.4v\\(c)\;22.4v\\(d)\;16.8v\end{array}$

The volume strength of $3N-H_2O_2$ solution is 16.8v.
Hence (d) is the correct answer.