CBSE Class 10 Science
Question 2 of 60
Solved 2022 Term 1 Question Paper CBSE Class 10 Science — Question 2
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Question Question 2
Which of the following oxide(s) is/are soluble in water to form alkalis?
(i) Na2O
(ii) SO2
(iii) K2O
(iv) NO2
- (i) and (iii)
- (i) only
- (ii) and (iv)
- (iii) only
(i) and (iii)
Reason — Sodium oxide and potassium oxide dissolve in water to form alkalis.
Na2O + H2O ⟶ 2NaOH
K2O + H2O ⟶ 2KOH