$3 H_3PO_2 \xrightarrow{\Delta} (X) + PH_3;$ The reaction is:

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

Which of the following represents the disproportionation of potassium chlorate?

The reaction occurring when $Cl_2$ gas is passed through a concentrated solution of $NaOH$ is called .....

In the following reaction,$4P + 3KOH + 3H_2O \to 3KH_2PO_2 + PH_3$,what happens to phosphorus $(P)$?

Assign $A, B, C, D$ from the given type of reaction.
$Na_2S + H_2SO_4$ $(Conc.)$ $\longrightarrow S\downarrow + SO_2 + Na_2SO_4$