Which of the following does not occur at cathode ?

Question

$\begin{array}{1 1} Ag^+ \to Ag-e^{-} \\ Fe^{2+} \to Fe^{3+} +e^{-} \\ Cu^{2+} +2e^{-} \to Cu \\ 2H^{+} \to H_2- 2e^{-} \end{array}$