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JAMB Chemistry 1982 Question 33

Question 33

Hydrogen, Oxygen and Oxides

An amphoteric oxide is an

  1. A.amorphous oxide of a metal
  2. B.amorphous oxide of a non-metal
  3. C.oxide that is insoluble in water
  4. D.oxide that behaves both as a base as well as an acid
  5. E.oxide that loses its oxygen on sublimation
Show the answer and explanation

Answer: D (oxide that behaves both as a base as well as an acid)

Explanation

Amphoteric oxides such as ZnO and Al2O3 react with both acids and alkalis.