How many structures possibles for a compound with the molecular formula `C_(6)H_(12)O` which can give positive iodoform and `2,4-DNP` test.

Explanation

To determine how many structures are possible for a compound with the molecular formula \( C_6H_{12}O \) that can give positive iodoform and 2,4-DNP tests, we can follow these steps:

### Step 1: Understand the Tests
1. **Iodoform Test**: This test is positive for methyl ketones (RC(=O)CH3) and for secondary alcohols that can be oxidized to methyl ketones. The reaction produces iodoform (CHI3), which is yellow in color.

2. **2,4-DNP Test**: This test is positive for aldehydes and ketones. When these compounds react with 2,4-DNP (dinitrophenylhydrazine), they form a yellow or orange precipitate.

### Step 2: Identify the Functional Groups
Given the molecular formula \( C_6H_{12}O \), the compound must contain either a ketone or an aldehyde to give a positive 2,4-DNP test. Additionally, to give a positive iodoform test, it must be a methyl ketone or a secondary alcohol that can be oxidized to a methyl ketone.

### Step 3: Draw Possible Structures
1. **Identify the Ketone Structure**: The compound must have a carbonyl group (C=O) in the structure. The simplest way to ensure it can give both tests is to have a methyl group adjacent to the carbonyl carbon.

2. **Possible Structures**:
- **Structure 1**: 2-Pentanone (CH3COCH2CH2CH3)
- **Structure 2**: 3-Pentanone (CH3CH2COCH2CH3)
- **Structure 3**: 4-Pentanone (CH3CH2CH2COCH3)
- **Structure 4**: 3-Hexanol (CH3CH2CHOHCH2CH3) - This can be oxidized to 3-Hexanone.

### Step 4: Count the Structures
From the above analysis, we can conclude that there are four distinct structures that can give both the iodoform and 2,4-DNP tests.

### Final Answer
The total number of structures possible for the compound with the molecular formula \( C_6H_{12}O \) that can give positive iodoform and 2,4-DNP tests is **4**.

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