Question 1

Which of the following chemists contributed to our understanding of the structure and bonding in benzene?

Accepted Answer

A)  Linus Pauling 
B)  Friedrich August Kekulé 
C)  Both a and b 
D)  Neither a nor b 
A)  Linus Pauling 
B)  Friedrich August Kekulé 
C)  Both a and b 
D)  Neither a nor b

Question 2

Which of the following statements about the structure of benzene is true?

Accepted Answer

A)  All the C-C bonds in benzene are longer than a typical C=C. 
B)  All the C-H bonds in benzene are longer than a typical C-H bond. 
C)  The benzene molecule contains alternating double and single bonds. 
D)  Benzene is a 1:1 mixture of two equilibrating structures. 
A)  All the C-C bonds in benzene are longer than a typical C=C. 
B)  All the C-H bonds in benzene are longer than a typical C-H bond. 
C)  The benzene molecule contains alternating double and single bonds. 
D)  Benzene is a 1:1 mixture of two equilibrating structures.

Question 3

Which of the following is true of the reactivity of benzene?

Accepted Answer

A)  It reacts readily with bromine to form 1,2-dibromobenzene. 
B)  It can be readily hydrogenated with H2/Pd. 
C)  It reacts readily with HBr to form bromobenzene. 
D)  None of the above is true. 
A)  It reacts readily with bromine to form 1,2-dibromobenzene. 
B)  It can be readily hydrogenated with H2/Pd. 
C)  It reacts readily with HBr to form bromobenzene. 
D)  None of the above is true.

Question 4

Which of the following statements is false?

Accepted Answer

A)  Anthracene is a polycyclic aromatic hydrocarbon. 
B)  Benzo[a]pyrene is a carcinogenic polynuclear aromatic hydrocarbon. 
C)  The most common polycyclic aromatic hydrocarbons are found in natural gas. 
D)  Naphthalene was once used as mothballs. 
A)  Anthracene is a polycyclic aromatic hydrocarbon. 
B)  Benzo[a]pyrene is a carcinogenic polynuclear aromatic hydrocarbon. 
C)  The most common polycyclic aromatic hydrocarbons are found in natural gas. 
D)  Naphthalene was once used as mothballs.

Question 5

How many unpaired electrons are present in an oxygen molecule?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  4 
A)  0 
B)  1 
C)  2 
D)  4

Question 6

What organic product is formed when benzene reacts with nitric acid in the presence of concentrated sulfuric acid?

Accepted Answer

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

Question 7

If both a methyl group and a hydroxyl group are attached to a benzene ring, which of the following is the preferred way to name the compound in the IUPAC system?

Accepted Answer

A)  as a hydroxymethylbenzene 
B)  as a hydroxytoluene 
C)  as a methylphenol 
D)  all of these are equally acceptable 
A)  as a hydroxymethylbenzene 
B)  as a hydroxytoluene 
C)  as a methylphenol 
D)  all of these are equally acceptable

Question 8

Which of the following compounds is an aliphatic hydrocarbon?

Accepted Answer

A)  aniline 
B)  anisole 
C)  phenol 
D)  none of these 
A)  aniline 
B)  anisole 
C)  phenol 
D)  none of these

Question 9

Consider the following structure.   If a chlorine at were substituted for each of the labeled hydrogen atoms, which of the following is true of the resulting compound?

Accepted Answer

A)  Could exist as cis-trans isomers. 
B)  Would represent the meta isomer. 
C)  Would represent the 1,4 isomer. 
D)  Both b and c would be correct. 
A)  Could exist as cis-trans isomers. 
B)  Would represent the meta isomer. 
C)  Would represent the 1,4 isomer. 
D)  Both b and c would be correct.

Question 10

Which reagents/catalysts would be needed to convert benzene to p-bromonitrobenzene?

Accepted Answer

A)  Br2/FeBr3 
B)  HNO3/H2SO4/Heat 
C)  NaOH 
D)  H2SO4/Heat 
E)  both a and b 
A)  Br2/FeBr3 
B)  HNO3/H2SO4/Heat 
C)  NaOH 
D)  H2SO4/Heat 
E)  both a and b

Question 11

Which of the following is a common feature of catechol, hydroquinone, and resorcinol?

Accepted Answer

A)  They all have two methyl groups as substituents on a benzene ring. 
B)  They all have two hydroxyl groups as substituents on a benzene ring. 
C)  They all have one methyl and one hydroxyl as substituents on a benzene ring. 
D)  None of the above, these compounds do not have any common features. 
A)  They all have two methyl groups as substituents on a benzene ring. 
B)  They all have two hydroxyl groups as substituents on a benzene ring. 
C)  They all have one methyl and one hydroxyl as substituents on a benzene ring. 
D)  None of the above, these compounds do not have any common features.

Question 12

Which of the following is a correct IUPAC name?

Accepted Answer

A)  1,2-dichloro-4-bromobenzene 
B)  1-bromo-3,4-dichlorobenzene 
C)  4-bromo-1,2-dichlorobenzene 
D)  3,4-dichloro-1-bromobenzene 
A)  1,2-dichloro-4-bromobenzene 
B)  1-bromo-3,4-dichlorobenzene 
C)  4-bromo-1,2-dichlorobenzene 
D)  3,4-dichloro-1-bromobenzene

Question 13

What reagents are used to convert nitrobenzene to aniline?

Accepted Answer

A)  H2 in the presence of a Ni catalyst 
B)  sulfuric acid 
C)  nitric acid in the presence of sulfuric acid 
D)  Ni in the presence of sulfuric acid 
A)  H2 in the presence of a Ni catalyst 
B)  sulfuric acid 
C)  nitric acid in the presence of sulfuric acid 
D)  Ni in the presence of sulfuric acid

Question 14

Which of the following is the correct IUPAC name of the following compound?

Accepted Answer

A)  2-hydroxy-4-methyl-1-nitrobenzene 
B)  4-methyl-1-nitro-2-phenol 
C)  5-methyl-2-nitrophenol 
D)  1-nitro-2-hydroxy-4-methylbenzene 
A)  2-hydroxy-4-methyl-1-nitrobenzene 
B)  4-methyl-1-nitro-2-phenol 
C)  5-methyl-2-nitrophenol 
D)  1-nitro-2-hydroxy-4-methylbenzene

Question 15

On what basis was the name aromatic originally given to compounds?

Accepted Answer

A)  They had strong odors. 
B)  Their first application was in aromatherapy. 
C)  Their odors were considered to be pleasant. 
D)  Their odors were considered to be unpleasant. 
A)  They had strong odors. 
B)  Their first application was in aromatherapy. 
C)  Their odors were considered to be pleasant. 
D)  Their odors were considered to be unpleasant.

Question 16

What is an acceptable name of the following compound?

Accepted Answer

A)  o-dimethylbenzene 
B)  m-dimethyllbenzene 
C)  p-diethylbenzene 
D)  m-diethylbenzene 
A)  o-dimethylbenzene 
B)  m-dimethyllbenzene 
C)  p-diethylbenzene 
D)  m-diethylbenzene

Question 17

Which of the following compounds is an amine?

Accepted Answer

A)  aniline 
B)  anisole 
C)  phenol 
D)  toluene 
A)  aniline 
B)  anisole 
C)  phenol 
D)  toluene

Question 18

Which of the following compounds is an ether?

Accepted Answer

A)  aniline 
B)  anisole 
C)  phenol 
D)  toluene 
A)  aniline 
B)  anisole 
C)  phenol 
D)  toluene

Question 19

Which aromatic ring substitution reaction is used in the preparation of synthetic detergents?

Accepted Answer

A)  reduction 
B)  halogenation 
C)  nitration 
D)  sulfonation 
A)  reduction 
B)  halogenation 
C)  nitration 
D)  sulfonation

Question 20

Which of the following is the correct IUPAC name of the following compound?

Accepted Answer

A)  1-propylphenol 
B)  2-propylphenol 
C)  2-hydroxypropylbenzene 
D)  2-propyl-1-hydroxybenzene 
A)  1-propylphenol 
B)  2-propylphenol 
C)  2-hydroxypropylbenzene 
D)  2-propyl-1-hydroxybenzene

Exam 13: Benzene and Its Derivatives

Which of the following chemists contributed to our understanding of the structure and bonding in benzene?

Which of the following statements about the structure of benzene is true?

Which of the following is true of the reactivity of benzene?

Which of the following statements is false?

How many unpaired electrons are present in an oxygen molecule?

What organic product is formed when benzene reacts with nitric acid in the presence of concentrated sulfuric acid?

If both a methyl group and a hydroxyl group are attached to a benzene ring, which of the following is the preferred way to name the compound in the IUPAC system?

Which of the following compounds is an aliphatic hydrocarbon?

Consider the following structure. If a chlorine at were substituted for each of the labeled hydrogen atoms, which of the following is true of the resulting compound?

Which reagents/catalysts would be needed to convert benzene to p-bromonitrobenzene?

Which of the following is a common feature of catechol, hydroquinone, and resorcinol?

Which of the following is a correct IUPAC name?

What reagents are used to convert nitrobenzene to aniline?

Which of the following is the correct IUPAC name of the following compound?

On what basis was the name aromatic originally given to compounds?

What is an acceptable name of the following compound?

Which of the following compounds is an amine?

Which of the following compounds is an ether?

Which aromatic ring substitution reaction is used in the preparation of synthetic detergents?

Which of the following is the correct IUPAC name of the following compound?

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