Azo coupling of benzenediazonium chloride with phenol

1. A.
   $C_{6}H_{5}{NH}_{2}\xrightarrow{{HNO}_{2}}$
2. B.
   $C_{6}H_{5}{\text{ }N}_{2}Cl + C_{6}H_{5}OH\xrightarrow{{OH}^{-}}$
3. C.
   $C_{6}H_{5}{\text{ }N}_{2}Cl\xrightarrow{{HBF}_{4}}$
4. D.
   $C_{6}H_{5}{\text{ }N}_{2}Cl\xrightarrow[HCl]{Cu\text{~(Pouder)~}}$

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1. A.
   Benzenediazonium chloride
2. B.
   Fluoroarene
3. C.
   p-Hydroxyazobenzene
4. D.
   N-Ethylbenzene sulfonamide

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1. A.
   Strong acidic
2. B.
   Mild alkaline
3. C.
   Alcoholic
4. D.
   Ether

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