Question

The dehydration of alcohols is an example of

(A) Bimolecular elimination/E2 reaction

(B) SN2 reaction

(C) SN1 reaction

(D) Unimolecular elimination/E1 reaction​

Answer 1

The correct answer is A

It is E2 bimolecular reaction where alcohol is heated with sulphuric acid at high temperature.

Here, OH- ion donates electrons to protons present in sulphuric acid and this leads to formation of Alkyloxonium ion.

Generally, primary alcohol is heated in bimolecular reaction to overcome difficulty in forming primary carbocation.