Aromatic HydrocarbonsmediumMCQ SINGLE

The addition of excess chlorine to benzene in the presence of ultraviolet light yields a crystallineAromatic Hydrocarbons Chemistry Question

Question

The addition of excess chlorine to benzene in the presence of ultraviolet light yields a crystalline product known as BHC (Benzene Hexachloride). Which specific stereoisomer of this compound is a powerful insecticide commercially known as Gammexane or Lindane?

Answer: C

💡 Solution & Explanation

Benzene hexachloride ($C_6H_6Cl_6$) is formed by the radical addition of three moles of chlorine to benzene under UV light. It exists as several stereoisomers. The $\gamma$ (gamma) isomer specifically is known as Gammexane or Lindane and acts as a potent insecticide.

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