Which of these oxides is amphoteric?

Answer and explanation

Correct answer: A. Zinc oxide

  1. Step 1: Zinc oxide reacts with both acids and strong alkalis. Answer: Zinc oxide. Why not the others: Sodium oxide: Sodium oxide is basic. Carbon dioxide: Carbon dioxide is acidic. Magnesium oxide: Magnesium oxide is basic.

Practise more Acids, bases, salts and rates of reaction.

Free questions with an explanation for every one, and full timed Kenya KCSE mock tests.