In the reaction $P + NaOH \to PH_3 + NaH_2PO_2$

Auto-oxidation of bleaching powder gives:

Assign $A, B, C, D$ from the given type of reaction.
$N_2O_3 \xrightarrow{R.T.} NO + NO_2$

$Cu^{+}$ ion is not stable in aqueous solution,because it shows $-$

The reaction that takes place when $Cl_2$ gas is passed through concentrated $NaOH$ solution is:

Which of the following reactions are disproportionation reactions?
$(a)$ $2 Cu^{+} \rightarrow Cu^{2+} + Cu^{0}$
$(b)$ $3 MnO_{4}^{2-} + 4 H^{+} \rightarrow 2 MnO_{4}^{-} + MnO_{2} + 2 H_{2}O$
$(c)$ $2 KMnO_{4} \xrightarrow{\Delta} K_{2}MnO_{4} + MnO_{2} + O_{2}$
$(d)$ $2 MnO_{4}^{-} + 3 Mn^{2+} + 2 H_{2}O \rightarrow 5 MnO_{2} + 4 H^{+}$
Select the correct option from the following: