Which substance cannot be reduced by \[{{H}_{2}}{{O}_{2}}\]

1.	Which substance cannot be reduced by \[{{H}_{2}}{{O}_{2}}\]
A.	\[KMn{{O}_{4}}/{{H}_{2}}S{{O}_{4}}\]
B.	\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}/{{H}_{2}}S{{O}_{4}}\]
C.	\[A{{g}_{2}}O\]
D.	\[F{{e}^{3+}}\]
Answer» E.

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Which substance cannot be reduced by \[{{H}_{2}}{{O}_{2}}\]

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