Question 1

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

Accepted Answer

A)  They had strong odors. 
B)  Their first application was in aromatherapy. 
C)  Their odors were considered pleasant. 
D)  They were sourced from flowers. 
A)  They had strong odors. 
B)  Their first application was in aromatherapy. 
C)  Their odors were considered pleasant. 
D)  They were sourced from flowers.

Question 2

Consider the following structure.   If one of the hydrogen atoms is replaced with an -NH2 group and another adjacent hydrogen with a -Br group, then what would be the IUPAC name of the compound?

Accepted Answer

A)  1-amino-2-bromo-benzene 
B)  2-amino-1-bromo-benzene 
C)  m-bromoaniline 
D)  2-bromoaniline 
E)  p-bromoaniline 
A)  1-amino-2-bromo-benzene 
B)  2-amino-1-bromo-benzene 
C)  m-bromoaniline 
D)  2-bromoaniline 
E)  p-bromoaniline

Question 3

Identify the product formed when p-nitrobenzoic acid reacts with hydrogen in the presence of Ni catalyst at a pressure of 3 atm.

Accepted Answer

A)  p-nitrobenzyl alcohol 
B)  p-nitrotoluene 
C)  p-aminobenzoic acid 
D)  p-aminophenol 
A)  p-nitrobenzyl alcohol 
B)  p-nitrotoluene 
C)  p-aminobenzoic acid 
D)  p-aminophenol

Question 4

Which of these carbocations is generated as an intermediate in the following reaction?

Accepted Answer

A)    
B)    
C)    
D)  none of the these 
A)    
B)    
C)    
D)  none of the these

Question 5

Which compound derived from natural gas is a starting material for the production of ethylene?

Accepted Answer

A)  acetylene 
B)  benzene 
C)  ethane 
D)  methane 
A)  acetylene 
B)  benzene 
C)  ethane 
D)  methane

Question 6

Propene reacts with hydrogen chloride to form mostly 2-chloropropane. This reaction does not lead to the formation of 1-chloropropane. Why?

Accepted Answer

A)  because it is a substitution reaction 
B)  because it is a hydrogenation reaction 
C)  because it is a regioselective reaction 
D)  because it is a hydration reaction 
A)  because it is a substitution reaction 
B)  because it is a hydrogenation reaction 
C)  because it is a regioselective reaction 
D)  because it is a hydration reaction

Question 7

Which type of alcohol is formed by the acid-catalyzed hydration of 2-methyl-1-pentene?

Accepted Answer

A)  primary 
B)  secondary 
C)  tertiary 
D)  aryl 
A)  primary 
B)  secondary 
C)  tertiary 
D)  aryl

Question 8

Which of the following statements is true of hydroquinone?

Accepted Answer

A)  It contains two hydroxyl groups at positions 1 and 3 of the benzene ring. 
B)  It contains one hydroxyl group at position 1 and one methyl group at position 2 of the benzene ring. 
C)  It contains two hydroxyl groups at positions 1 and 4 of the benzene ring. 
D)  It contains one hydroxyl group at position 1 and one methyl group at position 3 of the benzene ring. 
A)  It contains two hydroxyl groups at positions 1 and 3 of the benzene ring. 
B)  It contains one hydroxyl group at position 1 and one methyl group at position 2 of the benzene ring. 
C)  It contains two hydroxyl groups at positions 1 and 4 of the benzene ring. 
D)  It contains one hydroxyl group at position 1 and one methyl group at position 3 of the benzene ring.

Question 9

Which of the following is true of the IUPAC system of naming alkenes?

Accepted Answer

A)  The alkene is always named based on the shortest carbon chain in a branched structure. 
B)  The position of the double bond is always given the highest possible number. 
C)  The position and identity of substituents determine the number associated with the position of the double bond. 
D)  None of these are correct. 
A)  The alkene is always named based on the shortest carbon chain in a branched structure. 
B)  The position of the double bond is always given the highest possible number. 
C)  The position and identity of substituents determine the number associated with the position of the double bond. 
D)  None of these are correct.

Question 10

How many valence electrons are associated with the positively charged carbon in a carbocation?

Accepted Answer

A)  4 
B)  6 
C)  7 
D)  8 
A)  4 
B)  6 
C)  7 
D)  8

Question 11

Consider the given molecule.   Which of the following is a characteristic of the given molecule?

Accepted Answer

A)  It is an alkene. 
B)  It is a cis isomer. 
C)  It is the stereoisomer of the following molecule.   
D)  All of these are characteristics of this compound. 
A)  It is an alkene. 
B)  It is a cis isomer. 
C)  It is the stereoisomer of the following molecule.   
D)  All of these are characteristics of this compound.

Question 12

Which of the following is true of cis and trans isomers?

Accepted Answer

A)  They have the same structural connectivity. 
B)  They have the same physical properties. 
C)  They have the same structural connectivity and the same physical properties. 
D)  None of these. 
A)  They have the same structural connectivity. 
B)  They have the same physical properties. 
C)  They have the same structural connectivity and the same physical properties. 
D)  None of these.

Question 13

What is the IUPAC name for the following compound?

Accepted Answer

A)  1-amino-2-chloro-5-bromobenzene 
B)  5-bromo-2-chloroaniline 
C)  1-chloro-4-bromo-2-aniline 
D)  4-bromo-1-chloro-2-aniline 
A)  1-amino-2-chloro-5-bromobenzene 
B)  5-bromo-2-chloroaniline 
C)  1-chloro-4-bromo-2-aniline 
D)  4-bromo-1-chloro-2-aniline

Question 14

Which of the following is a correct IUPAC name?

Accepted Answer

A)  2-chloro-3-bromotoluene 
B)  3-bromo-2-chlorotoluene 
C)  2-chloro-4-bromotoluene 
D)  6-bromo-4-chlorotoluene 
A)  2-chloro-3-bromotoluene 
B)  3-bromo-2-chlorotoluene 
C)  2-chloro-4-bromotoluene 
D)  6-bromo-4-chlorotoluene

Question 15

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

Accepted Answer

A)  1-ethyl-4-hydroxybenzene 
B)  4-ethylphenol 
C)  1-hydroxy-4-methylbenzene 
D)  phenolstyrene 
A)  1-ethyl-4-hydroxybenzene 
B)  4-ethylphenol 
C)  1-hydroxy-4-methylbenzene 
D)  phenolstyrene

Question 16

In alkenes, there are four groups bonded to the carbons that constitute the carbon-carbon double bond. Which of the following situations produces cis-trans isomerism?

Accepted Answer

A)  when all four groups are the same 
B)  when one double-bonded carbon is bonded to two identical groups and the other double-bonded carbon is bonded to two other identical groups 
C)  when three of the four groups are the same, but the fourth group is different 
D)  none of these 
A)  when all four groups are the same 
B)  when one double-bonded carbon is bonded to two identical groups and the other double-bonded carbon is bonded to two other identical groups 
C)  when three of the four groups are the same, but the fourth group is different 
D)  none of these

Question 17

By which of the following reactions is ubiquinol converted to ubiquinone?

Accepted Answer

A)  halogenation 
B)  oxidation 
C)  reduction 
D)  neutralization 
A)  halogenation 
B)  oxidation 
C)  reduction 
D)  neutralization

Question 18

What are the products of an iron-catalyzed reaction between benzene and chlorine?

Accepted Answer

A)  chlorobenzene and a hydrogen molecule 
B)  chlorobenzene and chlorine atoms 
C)  chlorobenzene and hydrogen chloride 
D)  chlorobenzene and water 
A)  chlorobenzene and a hydrogen molecule 
B)  chlorobenzene and chlorine atoms 
C)  chlorobenzene and hydrogen chloride 
D)  chlorobenzene and water

Question 19

Which of the following compounds have cis-trans isomers because they lack free rotation about their carbon-carbon bonds?

Accepted Answer

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

Question 20

Which of the following curved arrows correctly describes the first step of the reaction of propene with a hydrogen halide?

Accepted Answer

A)    
B)    
C)    
D)  None of these are correct. 
A)    
B)    
C)    
D)  None of these are correct.

Exam 12: Alkenes, Alkynes, and Aromatic Compounds

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

Consider the following structure. If one of the hydrogen atoms is replaced with an -NH2 group and another adjacent hydrogen with a -Br group, then what would be the IUPAC name of the compound?

Identify the product formed when p-nitrobenzoic acid reacts with hydrogen in the presence of Ni catalyst at a pressure of 3 atm.

Which of these carbocations is generated as an intermediate in the following reaction?

Which compound derived from natural gas is a starting material for the production of ethylene?

Propene reacts with hydrogen chloride to form mostly 2-chloropropane. This reaction does not lead to the formation of 1-chloropropane. Why?

Which type of alcohol is formed by the acid-catalyzed hydration of 2-methyl-1-pentene?

Which of the following statements is true of hydroquinone?

Which of the following is true of the IUPAC system of naming alkenes?

How many valence electrons are associated with the positively charged carbon in a carbocation?

Consider the given molecule. Which of the following is a characteristic of the given molecule?

Which of the following is true of cis and trans isomers?

What is the IUPAC name for the following compound?

Which of the following is a correct IUPAC name?

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

In alkenes, there are four groups bonded to the carbons that constitute the carbon-carbon double bond. Which of the following situations produces cis-trans isomerism?

By which of the following reactions is ubiquinol converted to ubiquinone?

What are the products of an iron-catalyzed reaction between benzene and chlorine?

Which of the following compounds have cis-trans isomers because they lack free rotation about their carbon-carbon bonds?

Which of the following curved arrows correctly describes the first step of the reaction of propene with a hydrogen halide?

Matter, Energy, and Measurement

Atoms

Chemical Bonds

Chemical Reactions

Gases, Liquids, and Solids

Solutions and Colloids

Reaction Rates and Chemical Equilibrium

Acids and Bases

Nuclear Chemistry

Organic Chemistry

Alkanes

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

Aldehydes and Ketones

Carboxylic Acids

Carboxylic Anhydrides, Esters, and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Chemical Communications: Neurotransmitters and Hormones

Nucleotides, Nucleic Acids, and Heredity

Gene Expression and Protein Synthesis

Bioenergetics: How the Body Converts Food to Energy

Specific Catabolic Pathways: Carbohydrate, Lipid, and Protein Metabolism

Biosynthetic Pathways

Nutrition

Immunochemistry

Body Fluids

Filters

Consider the following structure. If one of the hydrogen atoms is replaced with an -NH₂ group and another adjacent hydrogen with a -Br group, then what would be the IUPAC name of the compound?