Various products formed on oxidation of 2, 5-dimethylhexan-3-one are
(i)`CH_(3)-underset(CH_(3))underset(|)(CH)-COOH`
(i) `CH_(3)-underset(CH_(3))underset(|)(CH)-CH_(2)-COOH`
(iii) `CH_(3)COOH`
(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: Understand the Structure of 2,5-Dimethylhexan-3-one
2,5-Dimethylhexan-3-one is a ketone with the following structure:
- It has a total of 6 carbon atoms (hexane).
- The ketone functional group (C=O) is located on the 3rd carbon.
- There are methyl groups (–CH3) on the 2nd and 5th carbons.

The structure can be represented as:
```
CH3
|
CH3-CH-CO-CH2-CH-CH3
|
CH3
```

### Step 2: Oxidation of the Ketone
When 2,5-dimethylhexan-3-one is oxidized, the ketone group can undergo cleavage, leading to the formation of carboxylic acids. The oxidation process involves breaking the carbon-carbon bonds adjacent to the carbonyl group.

### Step 3: Identify the Products
1. **First Product**: The cleavage of the bond adjacent to the ketone can yield:
- **CH3-CH(CH3)-COOH** (2-methyl-3-hexanoic acid)

2. **Second Product**: Another possible cleavage can yield:
- **CH3-CH(CH3)-CH2-COOH** (3-methyl-2-hexanoic acid)

3. **Third Product**: The oxidation of the ketone can also lead to:
- **CH3COOH** (Acetic acid)

4. **Fourth Product**: Further oxidation can yield:
- **HCOOH** (Formic acid)

### Step 4: Conclusion
Thus, the products formed from the oxidation of 2,5-dimethylhexan-3-one are:
- (i) CH3-CH(CH3)-COOH
- (ii) CH3-CH(CH3)-CH2-COOH
- (iii) CH3COOH
- (iv) HCOOH

All four products are correct.

### Summary of Products:
1. **CH3-CH(CH3)-COOH** (2-methyl-3-hexanoic acid)
2. **CH3-CH(CH3)-CH2-COOH** (3-methyl-2-hexanoic acid)
3. **CH3COOH** (Acetic acid)
4. **HCOOH** (Formic acid)