the fractional distillation of petroleum produces gasoline up to ________________?
Correct answer: C. 20%
- A. 10%
- B. 15%
- C. 20%
- D. 30%
Explanation
Fractional distillation separates crude petroleum into fractions according to boiling range, and gasoline commonly makes up about 20% of the crude oil. The likely mistake is choosing 15%, which is associated with another petroleum fraction or a different refinery composition.
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About Alkanes
Alkanes are saturated hydrocarbons containing only carbon-carbon and carbon-hydrogen single bonds, with the general formula CnH2n+2 for open chains. Their structure, isomerism, IUPAC nomenclature, physical properties, combustion, free-radical halogenation and conformations are covered, including the difference between substitution in alkanes and addition in unsaturated hydrocarbons.
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