Which of the following is not a redox reaction

Options

A. `2Rb + 2H_2O rarr 2RbOH +H_2`
B. `2CuI_2 rarr 2CuI + I_2`
C. `2H_2O_2 rarr 2H_2 O+O_2`
D. `4KCN + Fe(CN)_2 rarr K_4 [Fe(CN)_6]`

Answer

D

Explanation

In the reaction `4KCN + Fe(CN)_2 rarr K_4[Fe(CN)_6]` , change in oxidation state is not taking place.