Statement-I : Benzene on heating with conc. `H_(2)SO_(4)` gives benzene sulphonic acid which when heated with superheated steam under pressure gives benzene.
Because
Statement-II : Sulphonation is a reversible process.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false.

Explanation

To solve the question, we need to analyze both statements provided in the question regarding benzene and its reactions.

### Step-by-Step Solution:

1. **Understanding Statement I**:
- Benzene reacts with concentrated sulfuric acid (H₂SO₄) to form benzene sulfonic acid (C₆H₅SO₃H).
- The reaction can be represented as:
\[ \text{C}_6\text{H}_6 + \text{H}_2\text{SO}_4 \rightarrow \text{C}_6\text{H}_5\text{SO}_3\text{H} + \text{H}_2\text{O} \]
- This process is known as sulfonation and is an example of electrophilic substitution.

**Hint**: Sulfonation involves the addition of the sulfonic acid group (-SO₃H) to the benzene ring.

2. **Understanding Statement II**:
- The sulfonation process is reversible, meaning that benzene sulfonic acid can be converted back to benzene.
- This can be achieved by heating benzene sulfonic acid with superheated steam under pressure, which leads to the release of the sulfonic acid group and regenerates benzene:
\[ \text{C}_6\text{H}_5\text{SO}_3\text{H} + \text{H}_2\text{O} \rightarrow \text{C}_6\text{H}_6 + \text{H}_2\text{SO}_4 \]
- This process is known as desulfonation.

**Hint**: Desulfonation is the reverse of sulfonation and involves the removal of the sulfonic acid group.

3. **Conclusion**:
- Both statements are correct. Statement I describes the process of sulfonation and its product, while Statement II explains that sulfonation is a reversible process, allowing for the regeneration of benzene from benzene sulfonic acid.
- Therefore, Statement II correctly explains Statement I.

**Final Answer**: Both statements are true, and Statement II is the correct explanation for Statement I.