Which is the gas that produces the most damaging acid rains ?

Options

A. `SO_(2)`
B. `O_(3)`
C. `CO_(2)`
D. `H_(2)`

Answer

**Step-by-Step Solution:**

1. **Understanding Acid Rain**: Acid rain refers to any form of precipitation (rain, snow, sleet, or hail) that has a higher acidity than normal due to the presence of certain pollutants in the atmosphere.

2. **Identifying Key Pollutants**: The primary gases that contribute to acid rain are sulfur dioxide (SO2) and nitrogen oxides (NOx). These gases are released into the atmosphere mainly through industrial processes, vehicle emissions, and burning fossil fuels.

3. **Role of Sulfur Dioxide**: Among these pollutants, sulfur dioxide is the most significant contributor to acid rain. When sulfur dioxide is released into the atmosphere, it reacts with water vapor, oxygen, and other chemicals to form sulfuric acid (H2SO4), which then falls to the ground as acid rain.

4. **Impact of Acid Rain**: Acid rain can lead to various environmental problems, including soil erosion, damage to aquatic ecosystems, and respiratory issues in humans due to the pollutants it carries.

5. **Conclusion**: Based on the information gathered, the gas that produces the most damaging acid rain is sulfur dioxide (SO2).

**Final Answer**: Sulfur dioxide (SO2) is the gas that produces the most damaging acid rain.

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