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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 C)
F) A) and D)

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 C)
F) B) and D)

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Which of the following statements about alkanes is not true?


A) Alkanes are aliphatic hydrocarbons.
B) Alkanes contain only C-C and C-H s bonds.
C) Alkanes are acyclic or cyclic.
D) Acyclic alkanes have two fewer H atoms than cyclic alkanes with the same number of carbons.

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

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What is the IUPAC name for the following alkane? What is the IUPAC name for the following alkane? A) 3-isopropyl-6-methyloctane B) 3-isopropyl-3.7-methyloctane C) 3-ethyl-2,6-dimethyloctane D) 6-ethyl-3,7-dimethyloctane


A) 3-isopropyl-6-methyloctane
B) 3-isopropyl-3.7-methyloctane
C) 3-ethyl-2,6-dimethyloctane
D) 6-ethyl-3,7-dimethyloctane

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

Correct Answer

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Select the most stable conformer of cis-1,3-cyclohexanediol. . Select the most stable conformer of cis-1,3-cyclohexanediol. . A) I B) II C) III D) IV


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

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

Correct Answer

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

Correct Answer

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Rank the following alkanes in order of increasing boiling point. Rank the following alkanes in order of increasing boiling point. A) I > II > III > IV B) IV > III > II > I C) II > III > IV > I D) IV > III > I > II


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

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

Correct Answer

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B

Which formula represents a cycloalkane with 5 carbons?


A) C5H8
B) C5H10
C) C5H12
D) C5H14

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

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B

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

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

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B

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

Correct Answer

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

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


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

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

Correct Answer

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Which of the following is not another representation for 2-methylbutane? Which of the following is not another representation for 2-methylbutane? 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 IUPAC name for the following compound? What is the IUPAC name for the following compound? A) 5-Ethyl-3,6-dimethylheptane B) 3-Ethyl-2,5-dimethylheptane C) 3-Ethyl-2,5-dimethyloctane D) 5-Ethyl-3,6-dimethyloctane


A) 5-Ethyl-3,6-dimethylheptane
B) 3-Ethyl-2,5-dimethylheptane
C) 3-Ethyl-2,5-dimethyloctane
D) 5-Ethyl-3,6-dimethyloctane

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

Correct Answer

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What is the alternate chair conformation of the following compound? What is the alternate chair conformation of the following compound? 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 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) B) and D)
F) A) and B)

Correct Answer

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What is the IUPAC name for the following alkane? What is the IUPAC name for the following alkane? A) 2,5,6,7-tetramethyloctane B) 2,3,4,7-tetramethyloctane C) 2,5,6,7-tetramethylheptane D) 2,3,4,7-tetramethylheptane


A) 2,5,6,7-tetramethyloctane
B) 2,3,4,7-tetramethyloctane
C) 2,5,6,7-tetramethylheptane
D) 2,3,4,7-tetramethylheptane

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

Correct Answer

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