Which particles present in coal cause acid rain? (Potassium, Thorium, Sulphur, Lead)

Explanation

To determine which particles present in coal cause acid rain, we can follow these steps:

1. **Understand Acid Rain**: Acid rain is a type of precipitation that contains harmful chemicals, primarily sulfur dioxide (SO₂) and nitrogen oxides (NOₓ), which can damage the environment.

2. **Identify the Options**: The options given are Potassium, Thorium, Sulphur, and Lead. We need to evaluate each of these to see if they are related to the formation of acid rain.

3. **Evaluate Each Option**:
- **Potassium**: This element is not known to contribute to acid rain. It is primarily a nutrient for plants.
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