Statement -1 : Phenol is more acidic than ethyl alcohol
Statement -2 : Phenol is a weaker acid than benzoic acid
Statement -3 : Phenol is a good substrate to prepare o- salicylic acid

Options

A. TTF
B. TTT
C. FFF
D. FTT

Explanation

To analyze the given statements regarding phenol, ethyl alcohol, and benzoic acid, let's evaluate each statement step by step.

### Step 1: Evaluate Statement 1
**Statement 1**: Phenol is more acidic than ethyl alcohol.

- **Analysis**:
- The acidity of a compound is determined by the stability of its conjugate base after losing a proton (H⁺).
- When phenol (C₆H₅OH) loses a proton, it forms the phenoxide ion (C₆H₅O⁻). The negative charge on the oxygen atom in the phenoxide ion is delocalized into the benzene ring, which stabilizes the ion due to resonance.
- In contrast, when ethyl alcohol (C₂H₅OH) loses a proton, it forms the ethoxide ion (C₂H₅O⁻). The negative charge on the oxygen in the ethoxide ion is not stabilized by resonance and is also destabilized by the +I effect of the ethyl group.
- Therefore, the phenoxide ion is more stable than the ethoxide ion, making phenol more acidic than ethyl alcohol.

**Conclusion**: Statement 1 is **True**.

### Step 2: Evaluate Statement 2
**Statement 2**: Phenol is a weaker acid than benzoic acid.

- **Analysis**:
- Benzoic acid (C₆H₅COOH) is structurally similar to phenol but has a carboxylic acid functional group.
- When benzoic acid loses a proton, it forms the benzoate ion (C₆H₅COO⁻). The negative charge on the benzoate ion is delocalized between two electronegative oxygen atoms, which stabilizes the ion significantly.
- In comparison, the negative charge on the phenoxide ion is only delocalized over the carbon atoms of the benzene ring.
- Since the benzoate ion is more stable than the phenoxide ion, benzoic acid is a stronger acid than phenol.

**Conclusion**: Statement 2 is **True**.

### Step 3: Evaluate Statement 3
**Statement 3**: Phenol is a good substrate to prepare o-salicylic acid.

- **Analysis**:
- Salicylic acid (o-hydroxybenzoic acid) can be synthesized from phenol through a reaction known as the Kolbe reaction.
- In this reaction, phenol is treated with sodium hydroxide (NaOH) and carbon dioxide (CO₂) under pressure, followed by acidification (H⁺), leading to the formation of salicylic acid.
- This confirms that phenol can indeed be used to prepare o-salicylic acid.

**Conclusion**: Statement 3 is **True**.

### Final Conclusion
All three statements are true. Therefore, the correct option is that all statements are true.

---