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AP EAMCET20226 Jul 2022Morning ShiftChemistryd and f Block ElementsActual

The set of amphoteric oxides among ZnO , Tl ₂ O ₃, In ₂ O ₃ , B ₂ O ₃, PbO , SnO ₂ is

Options

  1. AZnO , Tl ₂ O ₃, PbO
  2. BZnO , PbO , SnO ₂
  3. CZnO , In ₂ O ₃, SnO ₂
  4. DZnO , In ₂ O ₃, PbO

Correct answer

B. ZnO , PbO , SnO ₂

Step-by-step solution

Higher oxidation states of metals are acidic. Lower oxidation are basic as they produce bases reacting with water. Amphoteric oxides produce both acids and bases with water or reacts with both acid or bases. Tl ₂ O ₃, In ₂ O ₃ basic oxides; B ₂ O ₃ acidic oxide ZnO , PbO , SnO ₂ acidic oxides

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