Question 1

How is a tert-butyl group formed?

Accepted Answer

A)  by removing a hydrogen atom from the first carbon of butane 
B)  by removing a hydrogen atom from the second carbon of butane 
C)  by removing a hydrogen atom from the first carbon of 2-methylpropane 
D)  by removing a hydrogen atom from the second carbon of 2-methylpropane 
A)  by removing a hydrogen atom from the first carbon of butane 
B)  by removing a hydrogen atom from the second carbon of butane 
C)  by removing a hydrogen atom from the first carbon of 2-methylpropane 
D)  by removing a hydrogen atom from the second carbon of 2-methylpropane

Question 2

What do the two representations have in common?

Accepted Answer

A)  Both represent cis isomers of 1,2-dimethylcyclohexane. 
B)  Both represent cis isomers of 1,2-dimethylcyclopentane. 
C)  Both represent trans isomers of 1,2-dimethylcyclohexane. 
D)  Both represent trans isomers of 1,2-dimethylcyclopentane 
A)  Both represent cis isomers of 1,2-dimethylcyclohexane. 
B)  Both represent cis isomers of 1,2-dimethylcyclopentane. 
C)  Both represent trans isomers of 1,2-dimethylcyclohexane. 
D)  Both represent trans isomers of 1,2-dimethylcyclopentane

Question 3

Which of the following is soluble in water?

Accepted Answer

A)  methane 
B)  octane 
C)  pentane 
D)  none of these 
A)  methane 
B)  octane 
C)  pentane 
D)  none of these

Question 4

Which of the following compounds among 2,3-dimethylpentane, 3-ethylpentane, and 3-methylhexane are constitutional isomers of heptane?

Accepted Answer

A)  only 2,3-dimethylpentane and 3-ethylpentane 
B)  only 2,3-dimethylpentane and 3-methylhexane 
C)  only 3-ethylpentane and 3-methylhexane 
D)  all of these 
A)  only 2,3-dimethylpentane and 3-ethylpentane 
B)  only 2,3-dimethylpentane and 3-methylhexane 
C)  only 3-ethylpentane and 3-methylhexane 
D)  all of these

Question 5

Which of the following compounds contains a carbon-carbon triple bond?

Accepted Answer

A)  ethane 
B)  ethylene 
C)  methylene 
D)  acetylene 
A)  ethane 
B)  ethylene 
C)  methylene 
D)  acetylene

Question 6

Which of the following statements is false?

Accepted Answer

A)  Petroleum was formed by the decomposition of marine plants and animals. 
B)  Petroleum is refined using fractional distillation. 
C)  Short-chain hydrocarbons derived from petroleum are used to produce asphalt. 
D)  Diesel is derived from a higher boiling fraction of petroleum than gasoline. 
A)  Petroleum was formed by the decomposition of marine plants and animals. 
B)  Petroleum is refined using fractional distillation. 
C)  Short-chain hydrocarbons derived from petroleum are used to produce asphalt. 
D)  Diesel is derived from a higher boiling fraction of petroleum than gasoline.

Question 7

Which of the following compounds has isohexane as the common name?

Accepted Answer

A)  CH3(CH2)4CH3 
B)    
C)  CH3(CH2)2CH(CH3)2 
D)  none of these 
A)  CH3(CH2)4CH3 
B)    
C)  CH3(CH2)2CH(CH3)2 
D)  none of these

Question 8

Which of the following has the highest boiling point?

Accepted Answer

A)  2,2,4-triethylpentane 
B)  nonane 
C)  2,2-dimethylbutane 
D)  3-methylpentane 
A)  2,2,4-triethylpentane 
B)  nonane 
C)  2,2-dimethylbutane 
D)  3-methylpentane

Question 9

Which of the following is a false statement about the applications of chlorofluorocarbons?

Accepted Answer

A)  They are used as solvents to remove waxes from millings. 
B)  They are used as solvents to prepare surfaces for coatings. 
C)  They are used as solvents to remove protective coatings. 
D)  They are used as solvents to dissolve polar compounds. 
A)  They are used as solvents to remove waxes from millings. 
B)  They are used as solvents to prepare surfaces for coatings. 
C)  They are used as solvents to remove protective coatings. 
D)  They are used as solvents to dissolve polar compounds.

Question 10

How many stereocenters does 1,2-dimethylcyclopentane have?

Accepted Answer

A)  two 
B)  one 
C)  three 
D)  nine 
A)  two 
B)  one 
C)  three 
D)  nine

Question 11

Which isomer of hexane has the lowest boiling point?

Accepted Answer

A)  3-methylpentane 
B)  2-methylpentane 
C)  2,2-dimethylbutane 
D)  none of these 
A)  3-methylpentane 
B)  2-methylpentane 
C)  2,2-dimethylbutane 
D)  none of these

Question 12

Which of the following represents the molecular formula of an alkane?

Accepted Answer

A)  C10H32 
B)  C10H40 
C)  C10H42 
D)  C10H22 
A)  C10H32 
B)  C10H40 
C)  C10H42 
D)  C10H22

Question 13

Which of the following refrigerant gases is the greatest contributor to global warming?

Accepted Answer

A)  CFC-113 
B)  CFC-12 
C)  CFC-11 
D)  CFC-22 
A)  CFC-113 
B)  CFC-12 
C)  CFC-11 
D)  CFC-22

Question 14

What is the most abundant alkane present in natural gas?

Accepted Answer

A)  butane 
B)  propane 
C)  ethane 
D)  methane 
A)  butane 
B)  propane 
C)  ethane 
D)  methane

Question 15

When deriving an IUPAC name, which of the following prefixes should not be ignored during the alphabetizing of substituents?

Accepted Answer

A)  iso 
B)  di- 
C)  sec- 
D)  All of these should be ignored. 
A)  iso 
B)  di- 
C)  sec- 
D)  All of these should be ignored.

Question 16

Which of the following is not soluble in hexane?

Accepted Answer

A)  toluene 
B)  butane 
C)  water 
D)  methane 
A)  toluene 
B)  butane 
C)  water 
D)  methane

Question 17

Which is the correct IUPAC name for the following compound?

Accepted Answer

A)  2,2-diethylpentane 
B)  4-ethyl-4-methylhexane 
C)  4-methyl-4-ethylhexane 
D)  3-ethyl-3-methylhexane 
A)  2,2-diethylpentane 
B)  4-ethyl-4-methylhexane 
C)  4-methyl-4-ethylhexane 
D)  3-ethyl-3-methylhexane

Question 18

What is the correct IUPAC name for the following compound?

Accepted Answer

A)  2,2-dimethylhexane 
B)  2,2-dimethylpentane 
C)  1,1,1-trimethylbutane 
D)  4,4,4-trimethylbutane 
A)  2,2-dimethylhexane 
B)  2,2-dimethylpentane 
C)  1,1,1-trimethylbutane 
D)  4,4,4-trimethylbutane

Question 19

Which of the following is true of cyclobutane?

Accepted Answer

A)  It is a five-membered cyclic hydrocarbon. 
B)  It has one carbon-carbon double bond. 
C)  It is a saturated cyclic hydrocarbon. 
D)  It is a four-membered, open-chain hydrocarbon. 
A)  It is a five-membered cyclic hydrocarbon. 
B)  It has one carbon-carbon double bond. 
C)  It is a saturated cyclic hydrocarbon. 
D)  It is a four-membered, open-chain hydrocarbon.

Question 20

Which of the following compounds contain one or more benzene-like ring structures?

Accepted Answer

A)  alkanes 
B)  alkenes 
C)  alkynes 
D)  arenes 
A)  alkanes 
B)  alkenes 
C)  alkynes 
D)  arenes

Exam 11: Alkanes

How is a tert-butyl group formed?

What do the two representations have in common?

Which of the following is soluble in water?

Which of the following compounds among 2,3-dimethylpentane, 3-ethylpentane, and 3-methylhexane are constitutional isomers of heptane?

Which of the following compounds contains a carbon-carbon triple bond?

Which of the following statements is false?

Which of the following compounds has isohexane as the common name?

Which of the following has the highest boiling point?

Which of the following is a false statement about the applications of chlorofluorocarbons?

How many stereocenters does 1,2-dimethylcyclopentane have?

Which isomer of hexane has the lowest boiling point?

Which of the following represents the molecular formula of an alkane?

Which of the following refrigerant gases is the greatest contributor to global warming?

What is the most abundant alkane present in natural gas?

When deriving an IUPAC name, which of the following prefixes should not be ignored during the alphabetizing of substituents?

Which of the following is not soluble in hexane?

Which is the correct IUPAC name for the following compound?

What is the correct IUPAC name for the following compound?

Which of the following is true of cyclobutane?

Which of the following compounds contain one or more benzene-like ring structures?

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