O-xylene on ozonolysis will give:

Options

A. `{:(CHO),(|),(CHO):} and CH_(3)-overset(O)overset(||)C-CHO`
B. `CH_(3)-overset(O)overset(||)C-overset(O)overset(||)C-CH_(3) and CH_(3)-overset(O)overset(||)-CHO`
C. `CH_(3)-overset(O)overset(||)C-overset(O)overset(||)C-CH_(3) and {:(CHO),(|),(CHO):}`
D. `CH_(3)-overset(O)overset(||)C-overset(O)overset(||)C-,CH_(3)-overset(O)overset(||)C-CHO and {:(CHO),(|),(CHO):}`

Answer

To solve the problem of what products are formed when o-xylene undergoes ozonolysis, we will follow these steps:

### Step 1: Understand the Structure of o-Xylene
o-Xylene, also known as ortho-xylene, has the following structure:
- It consists of a benzene ring with two methyl (CH3) groups attached to adjacent carbon atoms (ortho position).
- The structure can be represented as follows:

```
CH3
|
C6H4
|
CH3
```

### Step 2: Identify the Double Bonds
In o-xylene, there are two double bonds present in the benzene ring. Ozonolysis involves the cleavage of these double bonds.

### Step 3: Perform Ozonolysis
During ozonolysis, the double bonds in the aromatic ring will be broken, and a double bond oxygen (C=O) will be added to each side of the broken bond. This means that each double bond will produce a carbonyl group (C=O).

### Step 4: Determine the Products
When the double bonds are cleaved, the following products are formed:
1. The first product is a compound with two aldehyde groups (–CHO) at the ends. This can be represented as:
```
H-C(=O)-C(=O)-H
```
This is called glyoxal.

2. The second product has one aldehyde group and one methyl group:
```
H-C(=O)-C(=O)-CH3
```
This is called methyl glyoxal.

3. The third product is similar to the second product but has the methyl group on the other side:
```
CH3-C(=O)-C(=O)-H
```
However, this is essentially the same as the second product due to the symmetry of the structure.

### Final Products
Thus, the products formed from the ozonolysis of o-xylene are:
- Glyoxal (H-C(=O)-C(=O)-H)
- Methyl glyoxal (H-C(=O)-C(=O)-CH3)

### Summary of Products
1. Glyoxal: H-C(=O)-C(=O)-H
2. Methyl glyoxal: H-C(=O)-C(=O)-CH3