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Haloalkanes and Haloarenes — Chemistry STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceChemistryHaloalkanes and Haloarenes1 Mark
MCQ
1-Chlorobutane on reaction with alcoholic potash gives:
  • A
    1-butene
  • B
    1-butanol
  • C
    2-butene
  • D
    2-butanol
✓

Answer

  1. 1-butene

Explanation:

Alc. KOH is a dehydrohalogenation agent, it reacts with an alkyl halide and alkene forms as a product.

Reaction of process:

$\text{CH}_3\text{CH}_2\text{CH}_2\text{Cl}\xrightarrow{\text{alc.KOH}}\text{CH}_3\text{CH}_2\text{CH}=\text{CH}_2$
 

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