Which of the following statement is not correct

Options

A. Phenol is used to prepare analgesic drugs
B. Phenol is neutralised by sodium carbonate
C. Solubility of phenol in water is more than that of chlorobenzene
D. Boiling point of o-nitrophenol is lower than that of pnitrophenol

Explanation

To solve the question "Which of the following statement is not correct?", we will analyze each statement provided and determine their correctness step by step.

### Step-by-Step Solution:

1. **Statement 1: Phenol is used to prepare analgesic drugs.**
- This statement is **correct**. Phenol is indeed used in the synthesis of various analgesic drugs, which are pain-relieving medications.

2. **Statement 2: Phenol is neutralized by sodium carbonate.**
- This statement is **not correct**. Phenol is a weak acid and does not react with sodium carbonate (Na2CO3) to produce carbon dioxide (CO2). Sodium carbonate is typically used to neutralize stronger acids, but phenol does not exhibit sufficient acidity to react with it.

3. **Statement 3: Solubility of phenol is more in water than that of chlorobenzene.**
- This statement is **correct**. Phenol is more soluble in water due to its ability to form hydrogen bonds, whereas chlorobenzene, being a non-polar compound, has lower solubility in water.

4. **Statement 4: The boiling point of ortho-nitrophenol is higher than that of para-nitrophenol.**
- This statement is **correct**. Ortho-nitrophenol exhibits intramolecular hydrogen bonding, which can lead to a lower boiling point compared to para-nitrophenol, which has intermolecular hydrogen bonding that increases its boiling point due to molecular association.

### Conclusion:
The statement that is **not correct** is **Statement 2**: "Phenol is neutralized by sodium carbonate."