Why does Mathura refinery pose problems to the Taj Mahal?

Explanation

**Step-by-Step Solution:**

1. **Identify the Source of Pollution**: The Mathura refinery is known to release various air pollutants, one of the most significant being sulfur dioxide (SO₂).

2. **Chemical Reaction**: When sulfur dioxide is released into the atmosphere, it can react with water vapor present in the air. This reaction leads to the formation of sulfuric acid (H₂SO₄).

3. **Formation of Acid Rain**: The sulfuric acid formed can mix with rainwater, resulting in what is known as acid rain. This acid rain is harmful to the environment and can have detrimental effects on structures and ecosystems.

...