Which of the following oxide(s) is/are soluble in water to form alkalis?

(i) Na2O (ii) SO2 (iii) K2O (iv) NO2

(a) (i) and (iii)

(b) (i) only

(c) (ii) and (iv)

(d) (iii) only

1 Answer

Answer :

Answer: (a)

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