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MHT CET202620 April 2026Morning ShiftChemistryp Block Elements (Group 13 & 14)Actual

Which from following oxides is amphoteric in nature?

Options

  1. ABaO
  2. BN ₂ O ₅
  3. CCO ₂
  4. DAl ₂ O ₃

Correct answer

D. Al ₂ O ₃

Step-by-step solution

BaO is an oxide of an alkaline earth metal and is basic in nature. N ₂ O ₅ and CO ₂ are oxides of non-metals and are acidic in nature. Al ₂ O ₃ reacts with both acids and bases to form salt and water, exhibiting both acidic and basic properties. Hence, it is an amphoteric oxide. Reaction with acid: Al ₂ O ₃ + 6 HCl 2 AlCl ₃ + 3 H ₂ O Reaction with base: Al ₂ O ₃ + 2 NaOH + 3 H ₂ O 2 Na [ Al ( OH )₄] Answer: Al ₂ O ₃

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