1.

In the reaction , As_(2)S_(3) + HNO_3 rarr H_3AsO_(4) +H_(2)SO_(4) +NO , the element oxidised is/are :

Answer»

As only
S only
N only
As and S both

Solution :`OVERSET(+3)(As_2)S_3+HNO_3rarrH_3overset(+5)(ASO_4)+H_(2)overset(+6)(SO_4)+NO`
Both As & S


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