Question

Which one of the following methods will not give benzene?

• A. Heating sodium salt of Benzoic acid with soda lime
• B. Chlorobenzene with NaOH
• C. Hydrolysis of benzene sulphonic acid with super heated steam
• D. Distilling phenol with Zn dust

Answer 1

The correct option is B Chlorobenzene with NaOH

Aryl halides like Chloro benzene are less reactive towards NaOH i.e nucleophilic substitution reactions. But chlorobenzene reacts at extreme conditions like at 623K, 300 atm giving sodium phenoxide, this on reaction with HCl gives phenols.