What happens when CH3-CH2CH2-Cl is boiled with alcoholic KOH?
When chloro propane is boiled with alcoholic KOH then, it forms propene
CH3-CH2CH2-Cl + alc. KOH --> CH3-CH2=CH2
Arrange CH3F, CHI, CH3Br and CH3Cl in order of their reactivity in nucleophilic substitution reaction.