Phenol and cyclohexanol can be distinguished by using :

Options

A. `FeCl_(3)`
B. `Na`
C. `PCl_(3)`
D. `CH_(3)COCl`

Answer

To distinguish between phenol and cyclohexanol, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Structures**:
- **Phenol**: It has a hydroxyl (-OH) group attached to a benzene ring.
- **Cyclohexanol**: It has a hydroxyl (-OH) group attached to a cyclohexane ring.

2. **Choose a Reagent**:
- The reagent we will use is **Ferric Chloride (FeCl3)**.

3. **Perform the Reaction**:
- When phenol reacts with Ferric Chloride, it forms a colored complex which can be violet, blue, green, or orange. This color change indicates the presence of the phenolic functional group.
- When cyclohexanol reacts with Ferric Chloride, there is **no color change** observed.

4. **Analyze the Results**:
- The appearance of color in the reaction with phenol indicates its presence, while the lack of color change with cyclohexanol indicates that it does not have the same functional group.

5. **Conclusion**:
- Therefore, we can conclude that **Ferric Chloride** is the reagent that can effectively distinguish between phenol and cyclohexanol.

### Final Answer:
Phenol and cyclohexanol can be distinguished by using **Ferric Chloride (FeCl3)**.

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