Which of the following reactions of an alcohol does not involve O-H bond breaking:

Options

A. Reaction with alkali metals
B. reaction with an acyl chloride
C. reaction with sulphonyl chloride
D. reaction with conc. Sulphuric acid

Answer

D

Explanation

`-underset(|)overset(H)overset(|)(C)-underset(|)overset(OH)overset(|)(C)-underset(-HOH)overset(Conc.H_(2)SO_(4))to-underset(|)(C)=underset(|)(C)-`
This reaction involve breaking of `'C-O'` bond not `'O-H'` bond.