Question

Oxides of aluminium and zinc are :

• A. acidic
• B. basic
• C. amphoteric
• D. neutral

Answer 1

Answer: (C)

amphoteric

Answer 2

Amphoteric oxides react with both acids and bases to form salts.
Aluminium oxide ( $Al_2O_3$) and zinc oxide (ZnO) exhibit this dual behavior.