How are flue gases from industries freed from oxides of nitrogen and sulphur ?

Explanation

To address the question of how flue gases from industries are freed from oxides of nitrogen and sulfur, we can break down the solution into several key steps:

### Step-by-Step Solution:

1. **Understanding Flue Gases**:
- Flue gases are a mixture of gases produced by the combustion of fuels in industrial processes, power stations, and other facilities. They primarily consist of carbon dioxide, water vapor, nitrogen, oxygen, and various pollutants including oxides of nitrogen (NOx) and sulfur (SOx).

2. **Identifying Pollutants**:
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