JEE Main Chemistry question

Chemistry Aromatic Compounds and Aryl Halides JEE Main

Benzene is obtained by

(A)Condensation of three C₂H₂ molecules
(B)Polymerisation (cyclotrimerisation) of three C₂H₂ moleculesCorrect
(C)Addition of three C₂H₂ molecules
(D)Substitution involving three acetylene molecules

Answer: (B)

Solution

Catalytic cyclotrimerisation ("polymerisation") of three molecules of acetylene over a suitable catalyst gives benzene.

Question ID VK-140191