Various products formed on oxidation of 2,5 dimethylhexan -3-one are
(i) `CH_3-underset(CH_3)underset(|)(CH)-COOH`
(ii) `CH_3-underset(CH_3)underset(|)(CH)-CH_2-COOH`
(iii) `CH_3COOH`
(iv) HCOOH

Options

A. (i) and (iii)
B. (i), (ii) and (iii)
C. (i), (ii) , (iii) and (iv)
D. (iii) and (iv)

Answer

To determine the various products formed on the oxidation of 2,5-dimethylhexan-3-one, we will follow these steps:

### Step 1: Identify the Structure
2,5-Dimethylhexan-3-one is a ketone with the following structure:
- The carbon chain consists of six carbon atoms (hexane).
- There are two methyl groups attached to the second and fifth carbon atoms.
- The ketone functional group (C=O) is located on the third carbon.

### Step 2: Understand the Oxidation Process
Oxidation of ketones typically involves the cleavage of C-C bonds adjacent to the carbonyl group. In this case, we will consider the possible cleavage points around the ketone functional group.

### Step 3: Cleavage of C-C Bonds
When the C-C bond is cleaved, we can form different carboxylic acids:
1. **Cleavage at the C-C bond adjacent to the carbonyl**:
- This will yield a carboxylic acid and an aldehyde.
- For example, cleavage can occur between the second and third carbons, producing:
- `CH3-CH(CH3)-COOH` (from the left side)
- `CH3-CH2-COOH` (from the right side)

2. **Cleavage at the other C-C bond**:
- Another possible cleavage can occur between the third and fourth carbons, leading to:
- `HCOOH` (formic acid)
- `CH3COOH` (acetic acid)

### Step 4: Identify the Products
From the above cleavages, we can identify the products:
1. `CH3-CH(CH3)-COOH` (from the first cleavage)
2. `CH3-CH2-COOH` (from the second cleavage)
3. `CH3COOH` (acetic acid)
4. `HCOOH` (formic acid)

### Step 5: Match with Given Options
The products formed from the oxidation of 2,5-dimethylhexan-3-one match with the options provided in the question:
- (i) `CH3-CH(CH3)-COOH`
- (ii) `CH3-CH2-COOH`
- (iii) `CH3COOH`
- (iv) `HCOOH`

### Conclusion
All the products listed in the question are possible outcomes of the oxidation of 2,5-dimethylhexan-3-one.

### Final Answer
The correct answer is option C, which includes all the products formed.

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