Disproportionation reactions are the reactions in which an element undergoes oxidation and reduction simultaneously forming two respective products. (One with higher oxidation state and one with lower.) A)
0
C
l2+2NaOH→Na
−1
Cl
+NaO
+1
Cl
+H2O B) H2
−1
O
2→2H2
−2
O
+
0
O
2 C) 2
+7
KMnO
4→K2
+6
MnO
4+
+4
Mn
O2+O2 D) 3
+6
Mn
O42−+4H+→2
+7
Mn
O4−+
+4
Mn
O2+2H2O ∴A,B,D only are disproportionation reactions.