WAEC Chemistry 2022 Objective — Question 45
Question 45 of 50 from the West African Examinations Council (WAEC) Chemistry 2022 Objective paper, with the correct answer and a full explanation.
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Which of the following oxides is amphoteric?
- A. Carbon (II) oxide
- B. Nitrogen (IV) oxide
- C. Lead (II) oxideCorrect
- D. Calcium oxide
Explanation
Lead (II) oxide is amphoteric — it can react with both acids and alkalis. Other common amphoteric oxides include aluminium oxide and zinc oxide.
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