Hydrocarbons which burn with a smoky flame are called:
Correct answer: B. Aromatic
- A. Aliphatic
- B. Aromatic
- C. Alicyclic
- D. None of these
Explanation
Aromatic compounds burn with sooty flame because they have a ring structure of carbon atoms. This causes incomplete combustion of the carbon chain. Thus they give a sooty flame.
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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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1,091 free Chemistry of Hydrocarbons MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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