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MHT CET Chemistry Haloalkanes and Haloarenes 2026 MHT CET 2026 (17 April Shift 1)

MHT CET Chemistry Question (2026) — Solution

Question

Which of the following reactions is used for the preparation of alkyl fluorides from alkyl chlorides?

Options

  1. A. Sandmeyeres reaction
  2. B. Fittig reaction
  3. C. Swartz reaction
  4. D. Finkelstein reaction

Answer

C. Swartz reaction

Step-by-step solution

Swarts reaction is the standard method used for the preparation of alkyl fluorides from alkyl chlorides or bromides. In this reaction, heating an alkyl chloride or bromide in the presence of a metallic fluoride such as AgF, Hg_2F_2, CoF_3, or SbF_3 yields the corresponding alkyl fluoride. R-Cl + AgF R-F + AgCl Finkelstein reaction is used for the preparation of alkyl iodides. Sandmeyer's reaction is used for the preparation of aryl halides from diazonium salts. Fittig reaction is used for the preparation of diaryls from aryl halides. Answer: Swartz reaction

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