Question

Which is the acidic oxide MgO, Na2O, CaO, CO2

Answer 1

Answer:

$CO_2$ is an acidic Oxide.

When Carbon Di-Oxide dissolves in water, it forms Carbonic Acid which is acidic in nature.

Explanation:

$MgO, Na_2O$ and $CaO$ are all basic oxides .

Answer 2

Answer:

CO2 is the acidic oxide. All the others are basic.