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PUCET (Punjab) Sandmeyer — practice questions

Explore 1 free Sandmeyer questions in PUCET (Punjab) Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Sandmeyer questions and exercises with answers

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**Sandmeyer's reaction** prepares aryl halides from:Read the answer and worked solution →

Worked practice questions

**Sandmeyer's reaction** prepares aryl halides from:

  1. Aryl alcohols + HX
  2. Aryl diazonium salts (Ar-N₂⁺) + CuX
  3. Direct halogenation
  4. Aldol condensation
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Correct answer: B. Aryl diazonium salts (Ar-N₂⁺) + CuX

**Sandmeyer:** ArN₂⁺X⁻ + CuX ⟶ Ar-X + N₂ + CuX. Diazonium salt (from aromatic amine + HNO₂) is decomposed in presence of Cu(I) halide. Especially useful for fluorides (Balz-Schiemann variant) where direct halogenation fails.

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