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Question

Which of the following are amphoteric oxides?


  1. Cu(OH)2

  2. Al2O3

  3. ZnO

  4. NaOH


Solution

The correct options are
B

Al2O3


C

ZnO


Metallic oxides with both acidic and basic character are called amphoteric oxides. They act as either acid or a base in a neutralisation reaction to form salt and water.

E.g., Al2O3,ZnO

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