For H3PO3 and H3PO4 the correct choice is :

(A) H3PO3  is diabasic and reducing agent.             

(B) H3PO3  is diabasic and non-reducing agent.

(C) H3PO4  is tribasic and reducing agent.

(D) H3PO4  is tribasic and non- reducing agent.

Concept Videos :-

#2 | 15th Group: Properties: II
#3 | 15th Group: Ammonia

Concept Questions :-

group 15 ,preparation and properties
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