1. ⇒  ( JEE Main 2022 (Online) 26th June Evening Shift)

Which one of the following is an example of disproportionation reaction ?

A. $3Mn{O}_4^{2-}+4H^{+}\to 2Mn{O}_4^{-}+Mn{O}_2+2H_{2}O$

B. $Mn{O}_4^{-}+4H^{+}+4e^{-}\to Mn{O}_2+2H_{2}O$

C. $10I^{-}+2Mn{O}_4^{-}+16H^{+}\to 2M{n}^{2+}+8H_{2}O+5I_2$

D. $8Mn{O}_4^{-}+3S_2{O}_3^{2-}+H_{2}O\to 8Mn{O}_2+6S{O}_4^{2-}+2O{H}^{-}$

2. ⇒  (JEE Main 2019 (Online) 12th April Morning Slot )

An example of a disproportionation reaction is :

A. 2NaBr + Cl₂ $\to$ 2NaCl + Br₂

B. 2KMnO₄ + MnO₂ + O₂ (3) (4)

C. 2CuBr $\to$ CuBr₂ + Cu

D. 2MnO₄ + 10I^– + 16H⁺ $\to$ 2Mn₂⁺ + 5I₂ + 8H₂O