What are amphoteric oxides ? Choose the amphoteric oxides from the following: `Na_2O, ZnO,Al_2O_3,CO_2,H_2O`

Explanation

### Step-by-Step Solution:

1. **Definition of Amphoteric Oxides**: Amphoteric oxides are oxides that can react with both acids and bases. This means they can exhibit both acidic and basic properties.

2. **Characteristics of Amphoteric Oxides**: When amphoteric oxides react with acids, they typically form a salt and water. Similarly, when they react with bases, they also form a salt and water.

3. **Examples of Amphoteric Oxides**:
- **Aluminum Oxide (Al₂O₃)**: This oxide reacts with hydrochloric acid (HCl) to form aluminum chloride and with sodium hydroxide (NaOH) to form sodium aluminate.
...