All GRE Subject Test: Chemistry Resources
Example Questions
Example Question #1 : Terpene Chemistry
Which of the following molecule is a type of terpene?
Possible Answers:
because it is derived from a pentene
because it is derived from an isoprene
because it is derived from a pentene
because it is derived from an isoprene
Correct answer:
because it is derived from an isoprene
Explanation:
Terpenes are special classes of lipids that are derived from isoprene units. An isoprene unit’s molecular formula is ; therefore, terpenes must contain a molecular formula that is derived from a empirical formula.
The molecular formula consists of seven isoprene units ( = ); therefore, is a type of terpene.
Pentene is an alkene with the molecular formula . () is derived from pentene units; however, terpenes do not have pentene units.
Nate
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All GRE Subject Test: Chemistry Resources
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