Answer :

Oxidised substance:- N2H4


Reduced Substance:- H2O2


Reducing agent:- N2H4


Oxidising agent:- H2O2


Explanation:- Oxidising agent is a reagent which can increase the O.N. of an element in a given substance.


H2O2 helps nitrogen to increase its Oxidation state.


The reduced substance is a reagent whose oxidation state has been decreased.


Here in this case, O in H2O2 has -1 oxidation state and the O.N. is reduced to -2 as oxygen in the product side is present in -2 O.N.


The oxidised substance is a reagent whose oxidation state has been decreased.


N in N2H4 is present in -2 O.N which is increased to zero in the product side where N is present as N2 (its elemental form)


Reducing Agent is a reagent which lowers the oxidation number of an element in a given substance.


N2H4 helps oxygen to decrease its O.N.


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