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Match List I with List II for the reactions of aqueous benzenediazonium chloride with various reagents. List I (Reagent) List II (Major Product) (A) KI (I) Benzene (B) H ₃ PO ₂ / H ₂ O (II) Iodobenzene (C) CH ₃ CH ₂ OH (III) Benzonitrile (D) CuCN / KCN (IV) Phenol (V) Ethoxybenzene Choose the correct answer from the options given below:

Options

  1. A(A)-(II), (B)-(IV), (C)-(V), (D)-(III)
  2. B(A)-(II), (B)-(I), (C)-(V), (D)-(III)
  3. C(A)-(II), (B)-(IV), (C)-(I), (D)-(III)
  4. D(A)-(II), (B)-(I), (C)-(I), (D)-(III)

Correct answer

D. (A)-(II), (B)-(I), (C)-(I), (D)-(III)

Step-by-step solution

Benzenediazonium chloride undergoes replacement reactions with different reagents. Reaction with KI introduces an iodine atom into the benzene ring, forming iodobenzene (A matches II). Hypophosphorous acid ( H ₃ PO ₂ ) in the presence of water acts as a mild reducing agent, reducing the diazonium salt to benzene (B matches I). Ethanol ( CH ₃ CH ₂ OH ) also acts as a mild reducing agent, reducing the diazonium salt to benzene while getting oxidized to ethanal (C matches I). Reaction with CuCN / KCN (Sandmeyer reacti

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