Hydro carbons which burn with smoky flame are called_________________?
Correct answer: C. Aromatic
- A. Aliphatic
- B. Alicyclic
- C. Aromatic
- D. Aldehyde
Explanation
Aromatic hydrocarbons have a relatively high carbon-to-hydrogen ratio, so incomplete combustion often produces glowing carbon particles and a smoky flame. Benzene and many of its derivatives therefore burn with a yellow, sooty flame. The likely mistake is aliphatic, but many aliphatic hydrocarbons burn with a cleaner flame when sufficient oxygen is present.
Last updated
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.
Practise Chemistry of Hydrocarbons
1,091 free Chemistry of Hydrocarbons MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
1,4-dimethylbenzene is called _.
Acetophenone can be formed by which of the following reaction for benzene?
Acetophenone can be formed by which of the following reaction of benzene?
Activation of the benzene ring in aniline can be decreased by treating with:
Among the following compounds which can be readily sulphonated: