Question 1

Which of the following structures is nonane?

Accepted Answer

A)   
B)   
C)   
D)   
E)   
A)   
B)   
C)   
D)   
E)

Question 2

What is the IUPAC name of the following molecule?

Accepted Answer

A)  3-ethyl-1-propylbenzene 
B)  1-propyl-3-ethylbenzene 
C)  1-ethyl-3-propylbenzene 
D)  3-propyl-1-ethylbenzene 
E)  ethylpropybenzene 
A)  3-ethyl-1-propylbenzene 
B)  1-propyl-3-ethylbenzene 
C)  1-ethyl-3-propylbenzene 
D)  3-propyl-1-ethylbenzene 
E)  ethylpropybenzene

Question 3

Which of the hydrocarbons listed are unsaturated? I. alkane
II) alkene
III) alkyne
IV) aromatic

Accepted Answer

A)  alkanes only 
B)  alkenes and alkynes only 
C)  alkenes, alkynes, and adromatics 
D)  alkanes, alkenes, alkynes, and aromatics 
E)  aromatics only 
A)  alkanes only 
B)  alkenes and alkynes only 
C)  alkenes, alkynes, and adromatics 
D)  alkanes, alkenes, alkynes, and aromatics 
E)  aromatics only

Question 4

The following structure is a poor representation of benzene. What is wrong with it?

Accepted Answer

A)  Benzene does not have six sides. 
B)  Benzene is not flat. 
C)  Benzene is never represented with three double bonds and three single bonds. 
D)  Benzene does not have the molecular formula C6H6. 
E)  The bonds in benzene should all be the same length. 
A)  Benzene does not have six sides. 
B)  Benzene is not flat. 
C)  Benzene is never represented with three double bonds and three single bonds. 
D)  Benzene does not have the molecular formula C6H6. 
E)  The bonds in benzene should all be the same length.

Question 5

Which pair(s) of molecules below are geometric isomers?

Accepted Answer

A)  All of them 
B)  Pairs 2, 3, and 4 
C)  Pairs 1, 2, and 3 
D)  Pair 1, 3, and 4 
E)  Pair 4 only 
A)  All of them 
B)  Pairs 2, 3, and 4 
C)  Pairs 1, 2, and 3 
D)  Pair 1, 3, and 4 
E)  Pair 4 only

Question 6

β-Carotene is the molecule that gives carrots their orange color. Which characteristic of β-carotene is primarily responsible for the orange color?

Accepted Answer

A)  the branched-chain 
B)  the two cyclohexanes 
C)  the conjugated alkenes 
D)  the trans geometry 
E)  the number of carbons 
A)  the branched-chain 
B)  the two cyclohexanes 
C)  the conjugated alkenes 
D)  the trans geometry 
E)  the number of carbons

Question 7

Identify the three parts of the following IUPAC name.

Accepted Answer

A)  prefix: 3-ethyl root: hexene suffix: none 
B)  prefix: 3-ethyl root: hex suffix: -ene 
C)  prefix: hex root: ene suffix: none 
D)  prefix: 3 root: ethyl suffix: hexene 
E)  prefix: eth root: yl suffix: hexene 
A)  prefix: 3-ethyl root: hexene suffix: none 
B)  prefix: 3-ethyl root: hex suffix: -ene 
C)  prefix: hex root: ene suffix: none 
D)  prefix: 3 root: ethyl suffix: hexene 
E)  prefix: eth root: yl suffix: hexene

Question 8

Which of these structures below are conformers?   I II III IV

Accepted Answer

A)  I and II 
B)  I and IV 
C)  I, III, and IV 
D)  I and III 
E)  All of these are conformers. 
A)  I and II 
B)  I and IV 
C)  I, III, and IV 
D)  I and III 
E)  All of these are conformers.

Question 9

What is the best IUPAC name of the following branched hydrocarbon?

Accepted Answer

A)  3-methylhexene 
B)  2-propyl-1-butene 
C)  3-heptene 
D)  2-ethyl-1-pentene 
E)  4-ethyl-4-pentene 
A)  3-methylhexene 
B)  2-propyl-1-butene 
C)  3-heptene 
D)  2-ethyl-1-pentene 
E)  4-ethyl-4-pentene

Question 10

Are the following two molecules structural isomers?

Accepted Answer

A)  No, because they do not have the same molecular formula 
B)  Yes, because they have the same molecular formula but different structures 
C)  Yes, because they have the same number of carbons 
D)  Yes, because they do not have the same molecular formula 
E)  No, because only one is branched 
A)  No, because they do not have the same molecular formula 
B)  Yes, because they have the same molecular formula but different structures 
C)  Yes, because they have the same number of carbons 
D)  Yes, because they do not have the same molecular formula 
E)  No, because only one is branched

Question 11

Which of these fatty acids is an oil at room temperature?

Accepted Answer

A)  A only 
B)  B only 
C)  A and B 
D)  A, D and E 
E)  C and B 
A)  A only 
B)  B only 
C)  A and B 
D)  A, D and E 
E)  C and B

Question 12

Which of the following foods should be avoided in order to limit the consumption of saturated fat?

Accepted Answer

A)  whole milk 
B)  cheese 
C)  ice cream 
D)  red meat 
E)  All of the above 
A)  whole milk 
B)  cheese 
C)  ice cream 
D)  red meat 
E)  All of the above

Question 13

Which of the molecules below are structural isomers?   I II III IV

Accepted Answer

A)  I and II 
B)  I and IV 
C)  I, III, and IV 
D)  I and III 
E)  All of these are structural isomers. 
A)  I and II 
B)  I and IV 
C)  I, III, and IV 
D)  I and III 
E)  All of these are structural isomers.

Question 14

What is the IUPAC name of the following hydrocarbon?

Accepted Answer

A)  propane 
B)  butane 
C)  pentane 
D)  but-1-ene 
E)  pent-1-ene 
A)  propane 
B)  butane 
C)  pentane 
D)  but-1-ene 
E)  pent-1-ene

Question 15

Which of the following structures is the best condensed structural formula for the Lewis structure given below?

Accepted Answer

A)   
B)   
C)   
D)   
E)   
A)   
B)   
C)   
D)   
E)

Question 16

Which of the following structures represents a diene?

Accepted Answer

A)   
B)   
C)   
D)   
E)   
A)   
B)   
C)   
D)   
E)

Question 17

Which molecule is represented by the IUPAC name 1,4-diethylbenzene?

Accepted Answer

A)   
B)   
C)   
D)   
E)   
A)   
B)   
C)   
D)   
E)

Question 18

What is the best IUPAC name of the following branched-chain hydrocarbon?

Accepted Answer

A)  trans-4-methyl-4-methyl-2-pentene 
B)  cis-2-methyl-2-methyl-3-pentene 
C)  cis-4,4-dimethyl-2-pentene 
D)  trans-2,2-dimethyl-3-pentene 
E)  cis-4,4,4-trimethyl-2-propene 
A)  trans-4-methyl-4-methyl-2-pentene 
B)  cis-2-methyl-2-methyl-3-pentene 
C)  cis-4,4-dimethyl-2-pentene 
D)  trans-2,2-dimethyl-3-pentene 
E)  cis-4,4,4-trimethyl-2-propene

Question 19

Which pair(s) of molecules below are conformers?

Accepted Answer

A)  Pairs 1, 3, and 4 
B)  Pairs 2 and 4 
C)  Pairs 2 and 3 
D)  Pair 2 only 
E)  Pair 4 only 
A)  Pairs 1, 3, and 4 
B)  Pairs 2 and 4 
C)  Pairs 2 and 3 
D)  Pair 2 only 
E)  Pair 4 only

Question 20

Benzene is not classified as an alkene. Why not?

Accepted Answer

A)  It does not have 120F1F1F1S1F1F1F10 bond angles. 
B)  It actually contains three double bonds, not just one. 
C)  It is flat. 
D)  It is much more stable and unreactive than an alkene. 
E)  Actually, benzene is classified as an alkene. 
A)  It does not have 120F1F1F1S1F1F1F10 bond angles. 
B)  It actually contains three double bonds, not just one. 
C)  It is flat. 
D)  It is much more stable and unreactive than an alkene. 
E)  Actually, benzene is classified as an alkene.

Which of the following structures is nonane?

What is the IUPAC name of the following molecule?

Which of the hydrocarbons listed are unsaturated? I. alkane II) alkene III) alkyne IV) aromatic

The following structure is a poor representation of benzene. What is wrong with it?

Which pair(s) of molecules below are geometric isomers?

β-Carotene is the molecule that gives carrots their orange color. Which characteristic of β-carotene is primarily responsible for the orange color?

Identify the three parts of the following IUPAC name.

Which of these structures below are conformers? I II III IV

What is the best IUPAC name of the following branched hydrocarbon?

Are the following two molecules structural isomers?

Which of these fatty acids is an oil at room temperature?

Which of the following foods should be avoided in order to limit the consumption of saturated fat?

Which of the molecules below are structural isomers? I II III IV

What is the IUPAC name of the following hydrocarbon?

Which of the following structures is the best condensed structural formula for the Lewis structure given below?

Which of the following structures represents a diene?

Which molecule is represented by the IUPAC name 1,4-diethylbenzene?

What is the best IUPAC name of the following branched-chain hydrocarbon?

Which pair(s) of molecules below are conformers?

Benzene is not classified as an alkene. Why not?

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Chemical Quantities and Chemical Reactions

Changes of State and the Gas Laws

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

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Carbohydrates: Structure and Function

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Exam 6: Organic Chemistry: Hydrocarbons

Which of the following structures is nonane?

What is the IUPAC name of the following molecule?

Which of the hydrocarbons listed are unsaturated? I. alkane II) alkene III) alkyne IV) aromatic

The following structure is a poor representation of benzene. What is wrong with it?

Which pair(s) of molecules below are geometric isomers?

β-Carotene is the molecule that gives carrots their orange color. Which characteristic of β-carotene is primarily responsible for the orange color?

Identify the three parts of the following IUPAC name.

Which of these structures below are conformers? I II III IV

What is the best IUPAC name of the following branched hydrocarbon?

Are the following two molecules structural isomers?

Which of these fatty acids is an oil at room temperature?

Which of the following foods should be avoided in order to limit the consumption of saturated fat?

Which of the molecules below are structural isomers? I II III IV

What is the IUPAC name of the following hydrocarbon?

Which of the following structures is the best condensed structural formula for the Lewis structure given below?

Which of the following structures represents a diene?

Which molecule is represented by the IUPAC name 1,4-diethylbenzene?

What is the best IUPAC name of the following branched-chain hydrocarbon?

Which pair(s) of molecules below are conformers?

Benzene is not classified as an alkene. Why not?

Measuring Matter and Energy

Atomic Structure and Nuclear Radiation

Compounds and Molecules

Chemical Quantities and Chemical Reactions

Changes of State and the Gas Laws

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

Acids and Bases

The Reactions of Organic Functional Groups in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

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