Which oxide is amphoteric in nature?

Options

A. BaO
B. CaO
C. BeO
D. MgO

Answer

To determine which oxide is amphoteric in nature among the given options, we will analyze each oxide's behavior when reacting with acids and bases.

### Step-by-Step Solution:

1. **Understanding Amphoteric Oxides:**
Amphoteric oxides are metal oxides that can react with both acids and bases to produce salt and water.

2. **Analyzing the Given Options:**
We have four options:
- A) BaO (Barium Oxide)
- B) CaO (Calcium Oxide)
- C) BeO (Beryllium Oxide)
- D) MgO (Magnesium Oxide)

3. **Testing Each Oxide:**
- **BaO (Barium Oxide):**
- Reacts with acids to form barium salts but does not react with bases. Hence, it is not amphoteric.
- **CaO (Calcium Oxide):**
- Reacts with acids to form calcium salts but does not react with bases. Hence, it is not amphoteric.
- **BeO (Beryllium Oxide):**
- Reacts with acids (e.g., H₂SO₄) to form beryllium sulfate (BeSO₄) and water.
- Reacts with bases (e.g., NaOH) to form sodium beryllate (Na₂Be(OH)₄) and water.
- Since it reacts with both, it is amphoteric.
- **MgO (Magnesium Oxide):**
- Reacts with acids to form magnesium salts but does not react with bases. Hence, it is not amphoteric.

4. **Conclusion:**
Based on the analysis, the oxide that is amphoteric in nature is **C) BeO (Beryllium Oxide)**.

### Final Answer:
The oxide that is amphoteric in nature is **C) BeO (Beryllium Oxide)**.