Which of the following oxides is an amphoteric oxide?

  1. A

    CO2

  2. B

    SiO2

  3. C

    GeO2

  4. D

    PbO2

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    Solution:

    An amphoteric oxide is SnO2SiO2 and CO2 have an acidic nature, whereas CaO has a basic nature. Oxides that have the ability to act as both an acid and a base to produce salt and water are known as amphoteric oxides. The oxidation states that a chemical species has access to determine amphoterism.

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