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Haloalkanes and Haloarenes — Chemistry STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceChemistryHaloalkanes and Haloarenes1 Mark
MCQ
Alkyl halides are prepared from alcohols by treating with
  • A
    HCl + ZnCl2
  • B
    Red P + Br2
  • C
    H2SO4 + KI
  • D
    All the above
✓

Answer

  1. HCl + ZnCl2
  1. Red P + Br2

Explanation:

  1. $\text{R}-\text{OH}\xrightarrow{ \ \text{HCl}+\text{ZnCl} \ \ }\text{R}-\text{Cl}_2+\text{H}_2\text{O}$

  2. $\text{R}-\text{OH}\xrightarrow{ \ \text{Red P + Br}_2 \ \ }\text{R}-\text{Br}+\text{H}_3\text{PO}_3$

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