Give two harmful effects of
Sulphur dioxide

Explanation

### Step-by-Step Solution:

1. **Identify the Chemical**: The question asks for the harmful effects of sulfur dioxide, which has the chemical formula \( \text{SO}_2 \).

2. **Understand the Formation of Acid Rain**: When sulfur dioxide is released into the atmosphere, it can react with water vapor to form sulfuric acid (\( \text{H}_2\text{SO}_4 \)). This process leads to the formation of acid rain.

3. **Effect on Monuments and Buildings**: One of the harmful effects of acid rain is that it can damage monuments and buildings. The acidic nature of the rain can corrode materials such as marble and limestone, leading to structural damage and aesthetic degradation.

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