Which of the following will not show iodoform test

Options

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

Explanation

To determine which of the following compounds will not show the iodoform test, we need to understand the criteria for a compound to give a positive iodoform test. The iodoform test is positive for compounds that contain a methyl ketone group (RCOCH3) or a methyl alcohol group (RCH(OH)CH3).

Let's analyze the options:

1. **CH3COCl (Acetyl chloride)**:
- This compound is a derivative of acetic acid and contains a methyl ketone structure. Therefore, it will give a positive iodoform test.

2. **Acetyl chloride**:
- This is the same as the first option, which is CH3COCl. It will also give a positive iodoform test.

3. **Acid amide**:
- Acid amides do not have the required methyl ketone or methyl alcohol structure. Therefore, they will not give a positive iodoform test.

4. **Other options (not specified)**:
- Depending on the specific structures, if they do not contain a methyl ketone or methyl alcohol group, they will also not give a positive iodoform test.

Based on this analysis, the answer to the question is that the compounds that will not show the iodoform test are the acid amide and potentially other options that do not contain the required functional groups.

### Step-by-Step Solution:

1. **Identify the compounds**: List the compounds provided in the question.
2. **Understand the iodoform test**: Recall that the iodoform test is positive for compounds with a methyl ketone (RCOCH3) or a methyl alcohol (RCH(OH)CH3).
3. **Analyze each compound**:
- For CH3COCl (acetyl chloride), it contains a methyl ketone structure, so it will give a positive test.
- For acid amide, it does not contain the required structure, so it will not give a positive test.
4. **Conclude**: Identify which compounds do not show the iodoform test based on the analysis.

### Final Answer:
The compounds that will not show the iodoform test are the acid amide and possibly other compounds that lack the methyl ketone or methyl alcohol structure.