In which of the following reactions, `H_(2)O_(2)` acts as a reducing agent ?

Options

A. `2MnO_(4)^(2-)+6H^(+)+5H_(2)Orarr 2Mn^(2)+8H_(2)O+5O_(2)`
B. `I_(2)+H_(2)O_(2)+2OH^(-)rarr2I^(-)+2H_(2)O+O_(2)`
C. `2MnO_(4)^(-)+3H_(2)O_(2)rarr2MnO_(2)+3O_(2)+2H_(2)O`
D. All of these

Answer

4

Explanation

In all reactions , hydrogen peroxide acts as reducing agnet in basic or acidic medium.