1.

Which of the following oxides is most acidic and most basic respectively? I(CaO), II`(K_2O)`, III`(H_2O)`, IV`(SO_3)`, V`(N_2O_5)`, VI`(SO_2)`.A. IV, IIB. V, IC. V, VI, IIID. V, II

Answer» Correct Answer - A
`SO_3`(VI) is the most acidic while `K_2O` (II) is the most basic


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