Acid rain is caused by oxides of:

Options

A. sulphur, nitrogen
B. sulphur, carbon
C. carbon, nitrogen
D. phosphorous, carbon

Explanation

**Step-by-Step Solution:**

1. **Understanding Acid Rain**: Acid rain is precipitation that has a lower pH than normal rainwater, making it acidic. This acidity is primarily caused by certain gases in the atmosphere.

2. **Identifying the Gases**: The two main gases that contribute to acid rain are sulfur dioxide (SO₂) and nitrogen oxides (NOₓ).

3. **Chemical Reactions**:
- **Sulfur Dioxide**: When sulfur dioxide is released into the atmosphere, it can react with water vapor to form sulfuric acid (H₂SO₄). The reaction can be represented as:
\[ SO₂ + H₂O \rightarrow H₂SO₄ \]
- **Nitrogen Oxides**: Similarly, nitrogen oxides can react with water vapor to form nitric acid (HNO₃). The reaction can be represented as:
\[ NOₓ + H₂O \rightarrow HNO₃ \]

4. **Conclusion**: Therefore, the oxides of sulfur and nitrogen are responsible for causing acid rain, specifically sulfur dioxide and nitrogen oxides.

5. **Final Answer**: The correct answer is that acid rain is caused by the oxides of sulfur and nitrogen.

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