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

What change occurs in the oxidation state during a disproportionation reaction?

$P_4 + 3NaOH + 3H_2O \to 3NaH_2PO_2 + PH_3$ is an example of

Which of the following reactions are disproportionation reactions?
$(A)$ $2 Cu^{+} \rightarrow Cu^{2+} + Cu$
$(B)$ $3 MnO_4^{2-} + 4 H^{+} \rightarrow 2 MnO_4^{-} + MnO_2 + 2 H_2 O$
$(C)$ $2 KMnO_4 \rightarrow K_2 MnO_4 + MnO_2 + O_2$
$(D)$ $2 MnO_4^{-} + 3 Mn^{2+} + 2 H_2 O \rightarrow 5 MnO_2 + 4 H^{+}$
Choose the correct answer from the options given below:

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

Fluorine reacts with ice and results in the change: $H_2O_{(s)} + F_{2(g)} \to HF_{(g)} + HOF_{(g)}$. Justify that this reaction is a redox reaction.