Identify the incorrect option from the following :

Options

A.
B.
C.
D.

Answer

To solve the question of identifying the incorrect option among the given reactions, we will analyze each option step by step.

### Step 1: Analyze the First Reaction
- **Reaction**: Aqueous KOH with an alkyl halide (let's assume R-Br).
- **Expected Products**: Alcohol (R-OH) and KBr.
- **Analysis**: This reaction is a nucleophilic substitution reaction (S_N2) where the hydroxide ion (OH-) from KOH attacks the carbon atom bonded to the bromine, resulting in the formation of an alcohol.
- **Conclusion**: This reaction is correct.

### Step 2: Analyze the Second Reaction
- **Reaction**: Alcoholic KOH with an alkyl halide (R-Br).
- **Expected Products**: Alkene (R-CH=CH2) and KBr.
- **Analysis**: In the presence of alcoholic KOH, the reaction favors elimination (E2 mechanism) rather than substitution. Therefore, the expected product is an alkene, not an alcohol.
- **Conclusion**: This reaction is incorrect as it suggests that alcohol is formed instead of an alkene.

### Step 3: Analyze the Third Reaction
- **Reaction**: Chlorobenzene with CH3COCl and AlCl3.
- **Expected Products**: Acetophenone (C6H5COCH3).
- **Analysis**: This reaction is an electrophilic aromatic substitution where the acetyl group (CH3CO-) is introduced onto the benzene ring, typically at the ortho or para position.
- **Conclusion**: This reaction is correct.

### Step 4: Analyze the Fourth Reaction
- **Reaction**: Chlorobenzene with NaOH and HCl.
- **Expected Products**: Phenol (C6H5OH).
- **Analysis**: This reaction involves the hydrolysis of chlorobenzene to form phenol, which is a well-known reaction. The NaOH provides hydroxide ions that replace the chlorine atom.
- **Conclusion**: This reaction is correct.

### Final Conclusion
- The incorrect option among the reactions is the second one, which incorrectly states that alcoholic KOH leads to the formation of an alcohol instead of an alkene.

### Answer:
The incorrect option is the second one: "Alcohol is made with alcoholic KOH."