Corrosion of marble due to acid rain is known as

Options

A. Acid cancer
B. Marble cancer
C. Lime cancer
D. Calcium rust

Answer

### Step-by-Step Solution:

1. **Understanding Acid Rain**:
- Acid rain is formed when pollutants like nitrogen oxides and sulfur oxides mix with rainwater, creating nitric acid and sulfuric acid.

2. **Composition of Marble**:
- Marble is primarily composed of calcium carbonate (CaCO3).

3. **Reaction of Acid Rain with Marble**:
- When acid rain (which contains sulfuric acid or nitric acid) falls on marble, a chemical reaction occurs.
- For example, sulfuric acid (H2SO4) reacts with calcium carbonate (CaCO3) to produce calcium sulfate (CaSO4) and carbonic acid (H2CO3).

4. **Result of the Reaction**:
- Calcium sulfate (CaSO4) is soluble in water. Therefore, when marble reacts with acid rain, it dissolves and crumbles away.

5. **Terminology**:
- The corrosion of marble due to acid rain is specifically referred to as "Marble Cancer."

6. **Conclusion**:
- Therefore, the answer to the question is that the corrosion of marble due to acid rain is known as "Marble Cancer."