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JAMB Chemistry 1990 Question 34

Question 34

Hydrogen, Oxygen and Oxides

A metallic oxide which reacts with both HCl and NaOH to give salt and water only can be classified as

  1. A.an acidic oxide
  2. B.a basic oxide
  3. C.a neutral oxide
  4. D.an amphoteric oxide
Show the answer and explanation

Answer: D (an amphoteric oxide)

Explanation

An oxide that reacts with both acids and alkalis to form a salt and water is amphoteric, e.g. ZnO or Al2O3.