Sulphur dioxide is mainly produced by the burning of ________>

Answer

**Step-by-Step Solution:**

1. **Identify the Source of Sulfur Dioxide**: Sulfur dioxide (SO2) is a gas that is primarily produced from various sources, particularly from the combustion of materials that contain sulfur.

2. **Recognize the Main Contributors**: The main contributors to sulfur dioxide emissions are fossil fuels. These include coal, oil, and natural gas, which often contain sulfur compounds.

3. **Explain the Process**: When fossil fuels are burned, the sulfur present in these fuels reacts with oxygen in the air to form sulfur dioxide. This reaction is a significant source of SO2 emissions, especially in industrial processes and power generation.

4. **Conclude the Answer**: Therefore, the correct answer to the question is that sulfur dioxide is mainly produced by the burning of **fossil fuels**.

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