Select correct answers from the choices A, B, C, D which are given. Write down only the letter corresponding to the correct answer.
Which of the following oxides is amphoteric?

Options

A. ZnO
B. CuO
C. FeO
D. CaO

Answer

To determine which of the following oxides is amphoteric, we need to understand the definition of amphoteric oxides. Amphoteric oxides are those that can react both as acids and bases.

1. **Identify the options given:**
- A) Zinc Oxide (ZnO)
- B) Copper Oxide (CuO)
- C) Iron Oxide (FeO)
- D) Calcium Oxide (CaO)

2. **Analyze each oxide:**
- **Zinc Oxide (ZnO):** This oxide can react with acids to form salts and water, and it can also react with bases to form complex ions. Therefore, it is amphoteric.
- **Copper Oxide (CuO):** This oxide primarily acts as a basic oxide and does not exhibit amphoteric behavior.
- **Iron Oxide (FeO):** Iron oxide is typically basic and does not show amphoteric properties.
- **Calcium Oxide (CaO):** This oxide is a strong base and does not exhibit amphoteric behavior.

3. **Conclusion:**
Among the options provided, only Zinc Oxide (ZnO) is amphoteric.

**Final Answer:** A

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