# $PbS+H_2O_2\rightarrow H_2O$+________

$\begin{array}{1 1}(a)\;PbSO_3\\(b)\;PbSO_4\\(c)\;Pb(SO_4)_2\\(d)\;Pb_2(SO_4)_3\end{array}$

$PbS+H_2O_2\rightarrow H_2O+PbSO_4$
Hence (b) is the correct answer.