MHT CET202613 April 2026Evening ShiftChemistryp Block Elements (Group 13 & 14)Actual

What is the nature of Al ₂ O ₃ ?

Options

AAcidic
BBasic
CAmphoteric
DNeutral

Correct answer

C. Amphoteric

Step-by-step solution

Aluminium oxide ( Al ₂ O ₃ ) is an amphoteric oxide because it reacts with both acids and bases to form salt and water. 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] Thus, it is amphoteric in nature. Answer: Amphoteric

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