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Acids, Bases and Salts - 1 (Class - IX)

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Multiple Choice

Metal oxides that show basic as well as acidic behaviour are called amphoteric oxides. Oxides of which of the following elements are amphoteric?

a. Aluminium
b. Zinc
c. Copper

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
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