Which of the following are amphoteric oxides:

MgO, ZnO, P₂O₃, Al₂O₃, NO₂

39 What are amphoteric oxides? Give two examples of amphoteric oxides. 39 Choose the acidic oxides, basic oxides and neutral oxides from the following:

Na₂O; CO₂; CO; SO₂; ; N₂O; H₂O.

40 What is the nature of the oxide SO₂ ? What happens when it is dissolved in water? Write the chemical equation of the reaction involved. 40 What is the nature of the oxide Na₂O? What happens when it is dissolved in water? Write the chemical equation of the reaction involved.