Question

what will 1-chlorobutane give on reaction with alcoholic potash?

Answer 1

1-chlobutane will give 1-butene on reaction with alc. KOH. The cemical equation is as follows:

CH₃CH₂CH₂CH₂Cl $\stackrel{\text{alc. KOH}}{\to }$ CH₃CH₂CH=CH₂​
Alc. KOH bring about dehydrohalogenation in alkyl halides.