Question

Which of the following reactions are disproportionation reaction?
a)$2Cu^{+}\rightarrow Cu^{2+}+Cu^{0}$
$b)3MnO_4^{2-}+4H^{+} \rightarrow2MnO_4^{-}+MnO_2+2H_2O$
$c)2KMnO_4\frac{\Delta}{\rightarrow}K_2MnO_4+MnO_2+O_2$
$d)2MnO_4^{-}+3Mn^{2+}+2H_2O \rightarrow 5MnO_2+4H^\oplus$
Select the correct option from the following:

• A. (a) and (b) only
• B. (a), (b) and (c)
• C. (a), (c) and (d)
• D. (a) and (d) only

Answer 1

Answer: (A)

(a) and (b) only

Answer 2

The correct option is (A) :(a) and (b) only