Benzenesulphonic acid when heated with steam gives benzene but nitrobenzene does not. Why so ?

Explanation

To understand why benzenesulphonic acid can be converted to benzene when heated with steam, while nitrobenzene cannot, we need to analyze the reactions involved in both cases.

### Step-by-Step Solution:

1. **Understanding Sulfonation of Benzene**:
- Benzene undergoes sulfonation when treated with concentrated sulfuric acid (H2SO4) to form benzenesulphonic acid (C6H5SO3H). This reaction can be represented as:
\[
C_6H_6 + H_2SO_4 \rightarrow C_6H_5SO_3H + H_2O
...