Statement-$1$ : $I_2 \rightarrow IO_3^- + I^-$; This is a disproportionation reaction.
Statement-$2$ : Oxidation number of $I$ can vary from $-1$ to $+7$.

Given below are two statements :
Statement $I$: $S_8$ solid undergoes disproportionation reaction under alkaline conditions to form $S^{2-}$ and $S_2O_3^{2-}$.
Statement $II$: $ClO_4^{-}$ can undergo disproportionation reaction under acidic condition.
In the light of the above statements,choose the most appropriate answer from the options given below :

The dibasic oxoacid of phosphorus on disproportionation gives two products $A$ and $B$. $A$ and $B$ are respectively

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

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?