The reaction in terms of intermediates and type of reaction is given below. Mark the incorrect option.

Options

A. `CH_(3)-overset(CH_(3))overset(|)(C)=CH_(2)+HB r to` Carbocation intermediate
B. `CH_(3)-overset(CH_(3))overset(|)(C)=CH_(2)+HB r overset("peroxide")to`Free radical intermediate
C.
D.

Explanation

To solve the question regarding the reaction intermediates and types of reactions, we will analyze each option provided and identify the incorrect one.

### Step-by-Step Solution:

1. **Option 1: CH3-CH=CH2 + HBr**
- This reaction involves the addition of HBr to an alkene (propene).
- According to Markovnikov's rule, the hydrogen (H) will add to the carbon with more hydrogen substituents, forming a more stable carbocation.
- The intermediate formed is a carbocation (specifically a tertiary carbocation), which is correct.
- **Conclusion:** This option is correct.

2. **Option 2: CH3-CH=CH2 + HBr (in the presence of peroxide)**
- In the presence of peroxides, the reaction follows the anti-Markovnikov rule.
- The HBr dissociates into H• and Br• free radicals.
- The free radical mechanism leads to the formation of a free radical intermediate, which is also correct.
- **Conclusion:** This option is correct.

3. **Option 3: C=C + X2**
- This reaction represents the addition of a dihalogen (X2) to an alkene.
- The reaction is a simple addition reaction where each halogen atom (X) adds to the double bond, resulting in a vicinal dihalide.
- However, the statement refers to it as an "electrophilic substitution reaction," which is incorrect. This reaction is not a substitution but rather an addition reaction.
- **Conclusion:** This option is incorrect.

4. **Option 4: C=C + O3**
- This reaction involves the addition of ozone (O3) to an alkene.
- The product formed is an ozonide, which can further decompose to yield aldehydes or ketones.
- This process is correctly described as ozonolysis.
- **Conclusion:** This option is correct.

### Final Answer:
The incorrect option is **Option 3**: C=C + X2 is incorrectly labeled as an electrophilic substitution reaction.