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MHT CET202615 April 2026Evening ShiftChemistryHydrocarbonsActual

What are the reactants involved in Friedal Crafts alkylation?

Options

  1. AC ₆ H ₆ + NH ₃
  2. BC ₆ H ₆ + CH ₃ Cl
  3. CC ₆ H ₆ + CH ₃ COCl
  4. DC ₆ H ₆ + CH ₄

Correct answer

B. C ₆ H ₆ + CH ₃ Cl

Step-by-step solution

Friedel-Crafts alkylation is an electrophilic aromatic substitution reaction in which an alkyl group is introduced into an aromatic ring. The typical reactants are an aromatic compound, such as benzene ( C ₆ H ₆ ), and an alkyl halide, such as methyl chloride ( CH ₃ Cl ). The reaction is carried out in the presence of a Lewis acid catalyst like anhydrous AlCl ₃ . C ₆ H ₆ + CH ₃ Cl Anhydrous AlCl ₃ C ₆ H ₅ CH ₃ + HCl The reaction of benzene with acetyl chloride ( CH ₃ COCl ) corresponds to Friedel-Crafts acylation.

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