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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) B) and C)
F) None 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) 1-sec-Butyl-4-isopropyl-2-methylcyclohexane B) 1-Isopropyl-3-methyl-4-sec-butylcyclohexane C) 4-Isopropyl-2-methyl-1-sec-butylcyclohexane D) 1-sec-Butyl-3-isopropyl-2-methylcyclohexane


A) 1-sec-Butyl-4-isopropyl-2-methylcyclohexane
B) 1-Isopropyl-3-methyl-4-sec-butylcyclohexane
C) 4-Isopropyl-2-methyl-1-sec-butylcyclohexane
D) 1-sec-Butyl-3-isopropyl-2-methylcyclohexane

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

Correct Answer

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Which of the following statements about alkanes is true?


A) Alkanes are aliphatic hydrocarbons having only C-C and C-H p bonds.
B) Cyclic alkanes have two fewer H atoms than acyclic alkanes with the same number of carbons.
C) Acyclic alkanes contain carbons joined in one or more rings.
D) Acyclic alkanes have the general molecular formula CnH2n.

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

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How many constitutional isomers are there with the molecular formula C5H12?


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

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

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Rank the conformers of 1,2,4-trimethylcyclohexane in order of decreasing stability,putting the most stable first. Rank the conformers of 1,2,4-trimethylcyclohexane in order of decreasing stability,putting the most stable first. A) I > II > III > IV B) III > II > IV > I C) III > IV > II > I D) I > II > IV > III


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

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

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) All of the above
F) None of the above

Correct Answer

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D

What is the relation between the following pair of compounds? What is the relation between the following pair of compounds? A) Constitutional isomers B) Stereoisomers C) Identical molecules D) Not isomers of each other


A) Constitutional isomers
B) Stereoisomers
C) Identical molecules
D) Not isomers of each other

E) A) and B)
F) None 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) 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) 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) 3,5-Diethyl-6-methylheptane B) 3,5-Diethyl-2-methylheptane C) 3-Ethyl-5-isopropylheptane D) 5-Ethyl-3-isopropylheptane


A) 3,5-Diethyl-6-methylheptane
B) 3,5-Diethyl-2-methylheptane
C) 3-Ethyl-5-isopropylheptane
D) 5-Ethyl-3-isopropylheptane

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


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

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

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

Correct Answer

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B

Rank the following alkanes in order of decreasing boiling point,putting the alkane with the highest boiling point first. Rank the following alkanes in order of decreasing boiling point,putting the alkane with the highest boiling point first. A) I > II > III B) I > III > II C) II > III > I D) III > II > I


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

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

Correct Answer

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


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

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

Correct Answer

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How many constitutional isomers are there with the molecular formula C6H14?


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

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

Correct Answer

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


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

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

Correct Answer

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


A) Pentane
B) Hexane
C) 2-Methylpentane
D) 2,2-Dimethylpentane

E) B) and D)
F) A) 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) 1,4-Dimethylcyclohexane B) 1,3-Dimethylcyclohexane C) 1,3-Dimethylcyclopentane D) 1,4-Dimethylcyclopentane


A) 1,4-Dimethylcyclohexane
B) 1,3-Dimethylcyclohexane
C) 1,3-Dimethylcyclopentane
D) 1,4-Dimethylcyclopentane

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

Correct Answer

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

Correct Answer

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A

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