Which one of the following does not undergo disproportionation reaction?

Which of the following are disproportionation reactions?
$(A)$ $2 NO_{2(g)} + 2 NaOH_{(aq)} \rightarrow NaNO_{2(aq)} + NaNO_{3(aq)} + H_2O_{(l)}$
$(B)$ $Cl_{2(g)} + 2 NaOH_{(aq)} \rightarrow NaClO_{(aq)} + NaCl_{(aq)} + H_2O_{(l)}$
$(C)$ $3 ClO^- \rightarrow 2 Cl^- + ClO_3^-$
$(D)$ $3 Mg_{(s)} + N_{2(g)} \rightarrow Mg_3N_{2(s)}$

The products $P$ and $Q$ of the following reaction, respectively, are $a S_{8(s)} + b NaOH_{(aq)} \longrightarrow P_{(aq)} + q Q_{(aq)} + r H_2O$

In the following reaction,assign the oxidation state for the underlined atom in the products of complete hydrolysis at $R.T.$:
$H_2\underline{S}_2O_6 + H_2O \longrightarrow H_2SO_3 + H_2SO_4$

In acidic solution, $MnO_4^{2-}$ converts into . . . . . . .

Which of the following ionic or molecular species does not disproportionate in water at room temperature?