What is obtained when chlorine is passed in boiling touence an dproduct is hydrolysed?

Options

A. o - cresol
B. p - cresol
C. 2, 4 - dihydroxytoluene
D. Benzyl alcohol

Answer

To solve the question, we need to follow a series of steps to understand the reaction that occurs when chlorine is passed through boiling toluene and the resulting product is hydrolyzed.

### Step-by-Step Solution:

1. **Identify the Structure of Toluene**:
Toluene is an aromatic compound with the formula C7H8. Its structure consists of a benzene ring (C6H5) with a methyl group (CH3) attached to it. The chemical structure can be represented as:
\[ \text{C}_6\text{H}_5\text{CH}_3 \]

2. **Chlorination of Toluene**:
When chlorine (Cl2) is passed through boiling toluene, a substitution reaction occurs. One of the hydrogen atoms on the benzene ring is replaced by a chlorine atom. This process is known as electrophilic aromatic substitution. The product formed is benzyl chloride (C6H5CH2Cl), which can be represented as:
\[ \text{C}_6\text{H}_5\text{CH}_2\text{Cl} \]

3. **Hydrolysis of Benzyl Chloride**:
The next step involves the hydrolysis of benzyl chloride. Hydrolysis refers to the reaction with water, where the chlorine atom is replaced by a hydroxyl group (OH). This can be represented as:
\[ \text{C}_6\text{H}_5\text{CH}_2\text{Cl} + \text{H}_2\text{O} \rightarrow \text{C}_6\text{H}_5\text{CH}_2\text{OH} + \text{HCl} \]
In this reaction, the Cl atom is replaced by an OH group, resulting in the formation of benzyl alcohol (C6H5CH2OH) and hydrochloric acid (HCl) as a byproduct.

4. **Final Product**:
The final product after hydrolysis is benzyl alcohol, which is represented as:
\[ \text{C}_6\text{H}_5\text{CH}_2\text{OH} \]

### Conclusion:
When chlorine is passed through boiling toluene and the product is hydrolyzed, the final product obtained is benzyl alcohol.