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Q:

Amphoteric oxide is-

  • 1
    aluminum
  • 2
    zinc oxide
  • 3
    Both A and B
  • 4
    None of these
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Answer : 3. "Both A and B"
Explanation :

An amphoteric oxide is a type of oxide that can act as both an acid and a base. This means it can react with both acids and bases, either accepting or donating protons (H⁺ ions) depending on the pH of the solution. Amphoteric oxides exhibit this dual behavior because they have both acidic and basic properties. Aluminum oxide (Al₂O₃) and zinc oxide (ZnO) are examples of common amphoteric oxides.

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