(a) Na
(b) Ca
(c) Al
(d) Cu
Answer: (c) Al
Reason: Aluminum oxide exhibits both acidic and basic performance which is why it is an amphoteric oxide.
(a) Na
(b) Ca
(c) Al
(d) Cu
Answer: (c) Al
Reason: Aluminum oxide exhibits both acidic and basic performance which is why it is an amphoteric oxide.