A) \[HN{{O}_{3}}\]
B) \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]
C) \[KMn{{O}_{4}}\]
D) \[{{H}_{2}}{{O}_{2}}\]
Correct Answer: D
Solution :
lift 2 acts both as an oxidising and reducing agent. eg, (i) \[A{{g}_{2}}O\] is reduced into \[Ag\] \[A{{g}_{2}}O+{{H}_{2}}{{O}_{2}}\xrightarrow{{}}2Ag+{{H}_{2}}O+{{O}_{2}}\] (ii) \[KN{{O}_{2}}\] is oxidised into \[KN{{O}_{3}}\] \[KN{{O}_{2}}+{{H}_{2}}{{O}_{2}}\xrightarrow{{}}KN{{O}_{3}}+{{H}_{2}}O\]
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