Question:
When chlorobenzene is treated with $Cl_{2}$ in the presence of anhydrous $FeCl_{3}$ catalyst, it gives a mixture of 1,2-dichlorobenzene and 1,4-dichlorobenzene. This is an example of ________.
When chlorobenzene is treated with $Cl_{2}$ in the presence of anhydrous $FeCl_{3}$ catalyst, it gives a mixture of 1,2-dichlorobenzene and 1,4-dichlorobenzene. This is an example of ________.
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Most benzene ring reactions involving catalysts like $FeCl_3$ or $AlCl_3$ are electrophilic substitutions.
Updated On: Jun 26, 2026
- Nucleophilic substitution reaction
- Electrophilic substitution reaction
- Free radical substitution reaction
- Nucleophilic addition reaction
- Electrophilic addition reaction
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The Correct Option is B
Solution and Explanation
Step 1: Concept
The reaction involves the substitution of a hydrogen atom on a benzene ring by a chlorine atom.
Step 2: Meaning
Benzene rings are electron-rich and are typically attacked by electrophiles ($Cl^+$ in this case).
Step 3: Analysis
$FeCl_3$ acts as a Lewis acid to generate the electrophile from $Cl_2$.
Step 4: Conclusion
This is a classic example of Electrophilic Aromatic Substitution. Final Answer: (B)
The reaction involves the substitution of a hydrogen atom on a benzene ring by a chlorine atom.
Step 2: Meaning
Benzene rings are electron-rich and are typically attacked by electrophiles ($Cl^+$ in this case).
Step 3: Analysis
$FeCl_3$ acts as a Lewis acid to generate the electrophile from $Cl_2$.
Step 4: Conclusion
This is a classic example of Electrophilic Aromatic Substitution. Final Answer: (B)
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