Question 1

Which of the following is not a conformer of butane?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) A) and B)
F) A) and C)

Question 2

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

Accepted Answer

A)  Pentane
B)  2-Methylpentane
C)  2,2-Dimethylpentane
D)  2,2,3-TrimethylpentaneE) None of the above
F) A) and B)

Question 3

What is the IUPAC name for the following alkane?

Accepted Answer

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

Question 4

Which of the following conformation is highest in energy?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) A) and B)
F) A) and C)

Question 5

What is the IUPAC name of the following compound?

Accepted Answer

A)  Pentane
B)  2-Methylpentane
C)  2-Methyl-3-ethylpentane
D)  3-Ethyl-2-methylpentaneE) All of the above
F) B) and C)

Question 6

Select the most stable conformer of cis-1,3-cyclohexanediol. .

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) All of the above
F) A) and B)

Question 7

Which of the following chair conformations represents trans-1,4-dimethylcyclohexane?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) A) and C)
F) None of the above

Question 8

Which formula represents a cycloalkane with 6 carbons?

Accepted Answer

A)  C6H12
B)  C6H14
C)  C6H16
D)  C6H18E) All of the above
F) B) and D)

Question 9

What is the IUPAC name for the following compound?

Accepted Answer

A)  5-Ethyl-3,6-dimethylheptane
B)  3-Ethyl-2,5-dimethylheptane
C)  3-Ethyl-2,5-dimethyloctane
D)  5-Ethyl-3,6-dimethyloctaneE) All of the above
F) A) and B)

Question 10

What is the IUPAC name for the following compound?

Accepted Answer

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-isobutyldecaneE) A) and C)
F) B) and D)

Question 11

What is the parent chain for the following compound?

Accepted Answer

A)  Hexane
B)  Heptane
C)  Octane
D)  NonaneE) B) and D)
F) None of the above

Question 12

What is the alternate chair conformation of the following compound?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) A) and D)
F) C) and D)

Question 13

Rank the following alkanes in order of increasing boiling point.  II > III > IV B) IV > III > II > I C) II > III > IV > I D) IV > III > I > II" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  I > II > III > IV
B)  IV > III > II > I
C)  II > III > IV > I
D)  IV > III > I > IIE) A) and B)
F) A) and D)

Question 14

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

Accepted Answer

A)  Pentane
B)  2-Methylpentane
C)  2,2-Dimethylpentane
D)  2,3,3-TrimethylpentaneE) A) and B)
F) All of the above

Question 15

Which of the following are anti conformers?

Accepted Answer

A)  I and II
B)  II and III
C)  I and IV
D)  II and IVE) None of the above
F) B) and C)

Question 16

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

Accepted Answer

A)  Pentane
B)  2-Methylpentane
C)  2,2-Dimethylpentane
D)  2,2,3-TrimethylpentaneE) B) and D)
F) All of the above

Question 17

What is the common name of the following alkyl group?

Accepted Answer

A)  Isopropyl
B)  Isobutyl
C)  sec-Butyl
D)  tert-ButylE) A) and D)
F) C) and D)

Question 18

What is the parent chain for the following compound?

Accepted Answer

A)  Heptane
B)  Octane
C)  Nonane
D)  DecaneE) C) and D)
F) B) and C)

Question 19

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

Accepted Answer

A)  90°
B)  109.5°
C)  120°
D)  180°E) A) and B)
F) A) and C)

Question 20

Which of the following statements about the conformations of acyclic alkanes is true?

Accepted Answer

A)  A staggered conformation with two larger groups 180° from each other is called gauche.
B)  Staggered conformations are at energy maxima and eclipsed conformations are energy minima.
C)  A staggered conformation with two larger groups 60° from each other is called anti.
D)  Gauche conformations are generally higher in energy than anti conformations.E) B) and D)
F) B) and C)

Exam 4: Alkanes

Rank the following alkanes in order of increasing boiling point.

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What is the IUPAC name for the following alkane?

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

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

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What is the IUPAC name for the following compound?

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

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Which of the following conformation is highest in energy?

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What is the parent chain for the following compound?

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What is the parent chain for the following compound?

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What is the IUPAC name for the following compound?

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Select the most stable conformer of cis-1,3-cyclohexanediol. .

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What is the common name of the following alkyl group?

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Which formula represents a cycloalkane with 6 carbons?

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

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Which of the following are anti conformers?

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Which of the following chair conformations represents trans-1,4-dimethylcyclohexane?

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What is the IUPAC name of the following compound?

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What is the alternate chair conformation of the following compound?

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Which of the following statements about the conformations of acyclic alkanes is true?

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Which of the following is not a conformer of butane?

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