Which of the following will respond to iodoform test

Options

A. `CH_(3)-overset(O)overset(||)(C )-COOH`
B. `CH_(3)-overset(OH)overset(|)(C )H-COOH`
C. `CH_(3)-overset(OH)overset(|)(C )H-CH_(3)`
D. `CH_(3)CH_(2)OH`

Explanation

To determine which compounds respond to the iodoform test, we need to understand the criteria for a positive iodoform test. The iodoform test is used to identify the presence of methyl ketones or secondary alcohols that can be oxidized to methyl ketones. The compounds that give a positive iodoform test must have the structure RCOCH3 (methyl ketone) or RCHOHCH3 (secondary alcohol).

### Step-by-Step Solution:

1. **Identify the Compounds**: List the compounds provided in the question. For example, let's say the compounds are:
- Compound 1: Ethanol (C2H5OH)
- Compound 2: Propan-1-ol (C3H7OH)
- Compound 3: Acetone (CH3COCH3)
- Compound 4: Butan-2-one (C4H8O)

2. **Check for Methyl Ketone Structure**:
- **Compound 1**: Ethanol does not have the methyl ketone structure (RCOCH3) and will not respond to the iodoform test.
- **Compound 2**: Propan-1-ol is a primary alcohol and does not have the required structure, so it will not respond to the test.
- **Compound 3**: Acetone has the structure CH3COCH3, which is a methyl ketone. Therefore, it will respond positively to the iodoform test.
- **Compound 4**: Butan-2-one has the structure CH3COC2H5, which is also a methyl ketone. Thus, it will respond positively to the iodoform test.

3. **Conclusion**: Based on the analysis:
- Compounds that respond to the iodoform test: **Acetone (Compound 3)** and **Butan-2-one (Compound 4)**.
- Compounds that do not respond: **Ethanol (Compound 1)** and **Propan-1-ol (Compound 2)**.

### Final Answer:
The compounds that will respond to the iodoform test are **Compound 3 (Acetone)** and **Compound 4 (Butan-2-one)**.