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Which of the following compounds has only primary,secondary,and quaternary carbon atoms?


A) Pentane
B) 2-Methylpentane
C) 2,2-Dimethylpentane
D) 2,2,3-Trimethylpentane

E) A) and B)
F) A) and C)

Correct Answer

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What is the name of the alkyl group that contains two carbons in a straight chain and one-carbon branch?


A) Ethyl
B) Propyl
C) Isopropyl
D) None of these

E) B) and D)
F) A) and B)

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What is the molecular formula of a cycloalkane that has six carbon atoms?


A) C6H14
B) C6H10
C) C6H12
D) C6H16

E) B) and D)
F) A) and B)

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What is the IUPAC name for the following compound? What is the IUPAC name for the following compound? A) 1-Butylcyclohexane B) Cyclohexanebutane C) 1-Cyclohexylbutane D) Butylcyclohexane


A) 1-Butylcyclohexane
B) Cyclohexanebutane
C) 1-Cyclohexylbutane
D) Butylcyclohexane

E) A) and D)
F) A) and C)

Correct Answer

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What is the common name of the following alkyl group? What is the common name of the following alkyl group? A) Isopropyl B) Isobutyl C) sec-Butyl D) tert-Butyl


A) Isopropyl
B) Isobutyl
C) sec-Butyl
D) tert-Butyl

E) A) and B)
F) None of the above

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Which of the following is the lowest energy conformer of 2,3-dimethybutane? Which of the following is the lowest energy conformer of 2,3-dimethybutane? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) All of the above
F) C) and D)

Correct Answer

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What is the IUPAC name for the following compound? What is the IUPAC name for the following compound? A) Hexylcyclopentane B) 1-Hexylcyclopentane C) 1-Cyclopentylhexane D) 1-Cyclopentylheptane


A) Hexylcyclopentane
B) 1-Hexylcyclopentane
C) 1-Cyclopentylhexane
D) 1-Cyclopentylheptane

E) C) and D)
F) All of the above

Correct Answer

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What is the IUPAC name for the following compound? What is the IUPAC name for the following compound? A) 4-Ethyl-5-methyloctane B) 4-Methyl-5-ethyloctane C) 4-Methyl-3-propylheptane D) 4-Methyl-5-propyloctane


A) 4-Ethyl-5-methyloctane
B) 4-Methyl-5-ethyloctane
C) 4-Methyl-3-propylheptane
D) 4-Methyl-5-propyloctane

E) C) and D)
F) None of the above

Correct Answer

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Which of the following cycloalkanes has the most angle strain?


A) Cyclopropane
B) Cyclobutane
C) Cyclopentane
D) Cyclohexane

E) B) and D)
F) A) and B)

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Which of the following compounds has only primary,secondary,and tertiary carbon atoms?


A) Pentane
B) 2-Methylpentane
C) 2,2-Dimethylpentane
D) 2,2,3-Trimethylpentane

E) B) and C)
F) C) and D)

Correct Answer

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What is the IUPAC name for the following compound? What is the IUPAC name for the following compound? A) 2,3,5-Trimethylhexane B) 2,4,5-Triethylhexane C) 2,4-Diethyl-5-methylheptane D) 4-Ethyl-3,6-dimethyloctane


A) 2,3,5-Trimethylhexane
B) 2,4,5-Triethylhexane
C) 2,4-Diethyl-5-methylheptane
D) 4-Ethyl-3,6-dimethyloctane

E) B) and C)
F) C) and D)

Correct Answer

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What is the IUPAC name for the following compound? What is the IUPAC name for the following compound? A) 3-Ethyl-2,7-dimethyl-5-sec-butyldecane B) 5-sec-Butyl-3-ethyl-2,7-dimethyldecane C) 2,7-Dimethyl-3-ethyl-5-sec-butyldecane D) 3-Ethyl-2,7-dimethyl-5-isobutyldecane


A) 3-Ethyl-2,7-dimethyl-5-sec-butyldecane
B) 5-sec-Butyl-3-ethyl-2,7-dimethyldecane
C) 2,7-Dimethyl-3-ethyl-5-sec-butyldecane
D) 3-Ethyl-2,7-dimethyl-5-isobutyldecane

E) A) and B)
F) C) and D)

Correct Answer

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Which of the following chair conformations represents trans-1,3-dimethylcyclohexane? Which of the following chair conformations represents trans-1,3-dimethylcyclohexane? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and D)
F) B) and C)

Correct Answer

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Which of the following is the highest energy conformer of 2,3-dimethylbutane? Which of the following is the highest energy conformer of 2,3-dimethylbutane? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and C)
F) B) and D)

Correct Answer

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What is the IUPAC name of the following compound? What is the IUPAC name of the following compound? A) Pentane B) 2-Methylpentane C) 2-Methyl-3-ethylpentane D) 3-Ethyl-2-methylpentane


A) Pentane
B) 2-Methylpentane
C) 2-Methyl-3-ethylpentane
D) 3-Ethyl-2-methylpentane

E) A) and B)
F) C) and D)

Correct Answer

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Which of the following is the most stable conformation of the following compound? Which of the following is the most stable conformation of the following compound? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and C)
F) C) and D)

Correct Answer

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Which of the following is the most stable conformation of cis-1-ethyl-3-isopropylcyclohexane? Which of the following is the most stable conformation of cis-1-ethyl-3-isopropylcyclohexane? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) None of the above
F) B) and D)

Correct Answer

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What is the molecular formula of an alkane that has twenty-three carbon atoms?


A) C23H46
B) C23H48
C) C23H50
D) C23H44

E) All of the above
F) B) and C)

Correct Answer

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What is the IUPAC name for the following compound? What is the IUPAC name for the following compound? A) 1-Butyl-3-methylcyclohexane B) 1-sec-Butyl-3-methylcyclohexane C) 1-Methyl-3-sec-butylcyclohexane D) 1-sec-Butyl-3-methylhexane


A) 1-Butyl-3-methylcyclohexane
B) 1-sec-Butyl-3-methylcyclohexane
C) 1-Methyl-3-sec-butylcyclohexane
D) 1-sec-Butyl-3-methylhexane

E) None of the above
F) C) and D)

Correct Answer

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How many cycloalkane constitutional isomers (excluding stereoisomers) are there with molecular formula C5H10?


A) 2
B) 3
C) 4
D) 5

E) B) and C)
F) B) and D)

Correct Answer

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