The preparation of benzene from acetylene can also be said as_________________?
Correct answer: B. Polymerization
- A. Oxidation
- B. Polymerization
- C. Dehydration
- D. Condensation
Explanation
Three acetylene molecules combine in a cyclic process to form one benzene molecule, so the reaction is a cyclotrimerisation, a type of polymerisation or addition of smaller molecules. It is not dehydration because no water molecule is removed. The likely mistake is choosing condensation, but the standard classification here is polymerisation.
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About Benzene and Aromatic Compounds
Benzene has a planar ring of delocalised π electrons, giving aromatic stability and equal carbon-carbon bond lengths. The topic covers resonance, electrophilic substitution reactions such as nitration, halogenation, sulphonation and Friedel-Crafts reactions, along with substituent effects and the distinction between substitution in benzene and addition in ordinary alkenes.
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