Question

Which one of the following is acidic in nature?
(a) Al2 O3
b) CO2
(c) CO
(d) CaO
Nouta​

Answer 1

D) CaO

it is acidic in nature.

Answer 2

Answer: b) CO₂

Explanation: It is considered as a lewis acid, CO is a neutral gas, Al₂O₃ is an amphoteric oxide i.e. it shows both acidic and basic nature And CaO is a base.

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