Which of the following equations depicts the reducing nature of H2O2 ?

Which of the following equations depicts the reducing nature of $H_{2} O_{2}$ ?

A
$2 Fe (CN)_{6}^{4 -} + 2 H^{+} + H_{2} O_{2} \to 2 Fe (CN)_{6}^{3 -} + 2 H_{2} O$
B
$O_{3} + H_{2} O_{2} \to 2 O_{2} + H_{2} O$
C
${Mn}^{2 +} + H_{2} O_{2} \to {Mn}^{4 +} + 2 {OH}^{-}$
D
$PbS + 4 H_{2} O_{2} \to {PbSO}_{4} + 4 H_{2} O$

Solution:

In the reducing nature of $H_{2} O_{2}$ , the oxidation number of O atom is changed from -1 to 0.

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