Statement -1 The C - O bond length of aliphatic alcohols is less than phenols
Statement - 2 in phenols C - O bond acquires `pi ` bond character.

Options

A. Statement -1 is true ,Statement -2 is True , Statement -2 is a correct explanation for Statement `-1 `
B. Statement -1 is True , Statement -2 is True Statement -2 is NOT a correct explanation for Statement `-1`
C. Statement -1 is True Statement -2 is False
D. Statement -1 is False Statement -2 is True

Explanation

To analyze the statements provided in the question, we will evaluate each statement regarding the bond lengths and character of the C-O bond in aliphatic alcohols and phenols.

### Step-by-Step Solution:

1. **Understanding Aliphatic Alcohols and Phenols**:
- Aliphatic alcohols are compounds with the general formula \( R-OH \), where \( R \) is an alkyl group.
- Phenols are compounds that consist of a hydroxyl group (-OH) attached to a benzene ring.

2. **C-O Bond Length in Aliphatic Alcohols**:
- In aliphatic alcohols, the C-O bond is a single bond (sigma bond). The bond length of a sigma bond is generally longer compared to a bond that has some degree of double bond character.

3. **C-O Bond Length in Phenols**:
- In phenols, the C-O bond also starts as a single bond. However, due to resonance, the lone pairs on the oxygen can delocalize into the benzene ring. This delocalization creates a partial double bond character between the carbon and oxygen.

4. **Resonance in Phenols**:
- The resonance structures of phenols show that the C-O bond can exhibit characteristics of a double bond due to the sharing of electrons between the oxygen and the carbon in the benzene ring. This results in a shorter bond length compared to a pure single bond.

5. **Comparing Bond Lengths**:
- Since the C-O bond in phenols has some double bond character due to resonance, it is shorter than the C-O bond in aliphatic alcohols, which is purely a single bond. Therefore, the statement that "the C-O bond length of aliphatic alcohols is less than that of phenols" is **false**.

6. **Evaluating Statement 2**:
- The second statement claims that "in phenols, the C-O bond acquires pi bond character." This is true because the resonance in phenols leads to a partial double bond character, which includes pi bond character.

### Conclusion:
- **Statement 1**: False (The C-O bond length of aliphatic alcohols is greater than that of phenols).
- **Statement 2**: True (In phenols, the C-O bond does acquire pi bond character).

### Final Answer:
- Statement 1 is false, and Statement 2 is true.

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