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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) A) and B)
F) All of the above

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


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

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

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Which of the following are anti conformers? Which of the following are anti conformers? A) I and II B) II and III C) I and IV D) II and IV


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

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

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

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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) All of the above
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) 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) None of the above
F) B) and C)

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

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Rank the conformers of butane in order of decreasing stability, putting the most stable first. Rank the conformers of butane in order of decreasing stability, putting the most stable first. A) IV > I > II > III B) IV > I > III > II C) II > III > I > IV D) I > IV > II > III


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

E) All of the above
F) B) 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) 1-Butylcyclohexane B) Cyclohexanebutane C) 1-Cyclohexylbutane D) Butylcyclohexane


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

E) A) and C)
F) A) 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-Dimethyl-4-sec-butylheptane B) 4-sec-Butyl-2,3-dimethylheptane C) 3,5,6-Trimethyl-4-propylheptane D) 2,3,5-Trimethyl-4-propylheptane


A) 2,3-Dimethyl-4-sec-butylheptane
B) 4-sec-Butyl-2,3-dimethylheptane
C) 3,5,6-Trimethyl-4-propylheptane
D) 2,3,5-Trimethyl-4-propylheptane

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

Correct Answer

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What is the approximate C-C-C bond angle in propane?


A) 90°
B) 109.5°
C) 120°
D) 180°

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

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Which of the following conformation is highest in energy? Which of the following conformation is highest in energy? A) I B) II C) III D) IV


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

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) A) and C)
F) None of the above

Correct Answer

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


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

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

Correct Answer

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Which of the following cycloalkanes has the least angle strain?


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

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

Correct Answer

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What is the parent chain for the following compound? What is the parent chain for the following compound? A) Heptane B) Octane C) Nonane D) Decane


A) Heptane
B) Octane
C) Nonane
D) Decane

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

Correct Answer

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