Which of the following alcohols is expected to give haloform test ?

Options

A. 1-Pentanol
B. 3-Pentanol
C. 2-Propanol
D. None of above

Explanation

To determine which of the given alcohols is expected to give a haloform test, we need to understand the conditions under which the haloform reaction occurs. The haloform test is typically positive for alcohols that can be oxidized to form a methyl ketone (RCOCH3) or a compound that can be converted into a methyl ketone.

### Step-by-Step Solution:

1. **Understanding the Haloform Test**:
The haloform test is used to identify methyl ketones or secondary alcohols that can be oxidized to form methyl ketones. The general structure for a compound that gives a positive haloform test is RCOCH3, where R is any alkyl group.

2. **Analyzing the Given Alcohols**:
- **1-Pentanol (C5H12O)**:
Structure: CH3-CH2-CH2-CH2-CH2OH
This is a primary alcohol and does not have the structure necessary to form a methyl ketone upon oxidation. Therefore, it will not give a haloform test.

- **3-Pentanol (C5H12O)**:
Structure: CH3-CH2-CHOH-CH2-CH3
This is a secondary alcohol, but it does not have a methyl group adjacent to the hydroxyl group that can be oxidized to form a methyl ketone. Thus, it will also not give a haloform test.

- **2-Propanol (C3H8O)**:
Structure: CH3-CHOH-CH3
This is a secondary alcohol where the central carbon (attached to the OH group) is also attached to two methyl groups. Upon oxidation, it can form acetone (CH3COCH3), which is a methyl ketone. Therefore, 2-propanol will give a positive haloform test.

3. **Conclusion**:
Based on the analysis, the alcohol that is expected to give a haloform test is **2-Propanol**.

### Final Answer:
The alcohol expected to give a haloform test is **2-Propanol** (Option C).

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