Question 1

Which of the following reactions involves the addition of different groups to the two ends of a double bond?

Accepted Answer

A)  hydration 
B)  hydrogenation 
C)  both a and b 
D)  neither a nor b 
A)  hydration 
B)  hydrogenation 
C)  both a and b 
D)  neither a nor b A

Question 2

Which of the following is true of ethylene?

Accepted Answer

A)  It is not a very important industrial chemical. 
B)  It is present in large amounts in natural gas. 
C)  Its most important use is as a fuel. 
D)  The vast majority of ethylene is produced by thermal cracking. 
A)  It is not a very important industrial chemical. 
B)  It is present in large amounts in natural gas. 
C)  Its most important use is as a fuel. 
D)  The vast majority of ethylene is produced by thermal cracking. D

Question 3

Which product is formed by the chlorination of 2-butene?

Accepted Answer

A)  2-chlorobutane 
B)  2,2-dichlorobutane 
C)  2,3-dichlorobutane 
D)  1,2-dichlorobutane 
A)  2-chlorobutane 
B)  2,2-dichlorobutane 
C)  2,3-dichlorobutane 
D)  1,2-dichlorobutane C

Question 4

What type of alcohol is formed by the hydration of 1-butene?

Accepted Answer

A)  primary 
B)  secondary 
C)  tertiary 
D)  None of these, the product is not an alcohol. 
A)  primary 
B)  secondary 
C)  tertiary 
D)  None of these, the product is not an alcohol.

Question 5

Which of the following structural features is never associated with cis-trans isomerism?

Accepted Answer

A)  double bonds 
B)  ring systems 
C)  triple bonds 
D)  None, they are all associated with cis-trans isomerism. 
A)  double bonds 
B)  ring systems 
C)  triple bonds 
D)  None, they are all associated with cis-trans isomerism.

Question 6

Currently there is extensive recycling of which of the following polymers?

Accepted Answer

A)  low-density polyethylene 
B)  polystyrene 
C)  poly(vinyl chloride) 
D)  none of these 
A)  low-density polyethylene 
B)  polystyrene 
C)  poly(vinyl chloride) 
D)  none of these

Question 7

Currently there is extensive recycling of which of the following polymers?

Accepted Answer

A)  high-density polyethylene 
B)  polystyrene 
C)  poly(vinyl chloride) 
D)  none of these 
A)  high-density polyethylene 
B)  polystyrene 
C)  poly(vinyl chloride) 
D)  none of these

Question 8

Given an alkane, an alkene, and an alkyne, each of which contains two carbon atoms, which compound will contain most hydrogen atoms?

Accepted Answer

A)  the alkane 
B)  the alkene 
C)  the alkyne 
D)  None, they all contain the same number of hydrogen atoms. 
A)  the alkane 
B)  the alkene 
C)  the alkyne 
D)  None, they all contain the same number of hydrogen atoms.

Question 9

Which of the following monomers can be used to prepare polystyrene?

Accepted Answer

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

Question 10

Low-density polyethylene is produced from ethylene by using which of the following?

Accepted Answer

A)  peroxide initiators 
B)  Ziegler-Natta catalysis 
C)  either a or b 
D)  neither a nor b 
A)  peroxide initiators 
B)  Ziegler-Natta catalysis 
C)  either a or b 
D)  neither a nor b

Question 11

Which of the following is not a correct IUPAC name for an alkene?

Accepted Answer

A)  2-methyl-1-butene 
B)  2-methyl-2-butene 
C)  3-methyl-1-butene 
D)  None, these are all correct IUPAC names. 
A)  2-methyl-1-butene 
B)  2-methyl-2-butene 
C)  3-methyl-1-butene 
D)  None, these are all correct IUPAC names.

Question 12

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.

Question 13

Which of the following, all of which have the molecular formula C5H10, has cis and trans isomers?

Accepted Answer

A)  2-methyl-1-butene 
B)  2-methyl-2-butene 
C)  2-pentene 
D)  none of them 
A)  2-methyl-1-butene 
B)  2-methyl-2-butene 
C)  2-pentene 
D)  none of them

Question 14

Which of the following correctly characterizes the compound represented below?

Accepted Answer

A)  trans isomer 
B)  alkyne 
C)  at least one 120° bond angle 
D)  free rotation around all bonds 
A)  trans isomer 
B)  alkyne 
C)  at least one 120° bond angle 
D)  free rotation around all bonds

Question 15

When the following substance reacts with water in the presence of an acid, which of the following describes the reaction?

Accepted Answer

A)  Two products are produced. 
B)  The product is an alcohol. 
C)  both a and b 
D)  neither a nor b 
A)  Two products are produced. 
B)  The product is an alcohol. 
C)  both a and b 
D)  neither a nor b

Question 16

In alkenes there are four groups bonded to the carbons which 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 the two groups on one atom are the same, but the two groups on the other atom are different from each other and also different from the groups on the first atom 
C)  when three of the four groups are the same, but the fourth group is different 
D)  none of these results in the existence of cis-trans isomerism 
A)  when all four groups are the same 
B)  when the two groups on one atom are the same, but the two groups on the other atom are different from each other and also different from the groups on the first atom 
C)  when three of the four groups are the same, but the fourth group is different 
D)  none of these results in the existence of cis-trans isomerism

Question 17

Which of the following is the starting material derived from natural gas that is used for the production of ethylene?

Accepted Answer

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

Question 18

Markovnikov's rule is useful to predict the outcome of the reaction of hydrogen chloride with which of the following alkenes?

Accepted Answer

A)  1-butene 
B)  2-butene 
C)  both a and b 
D)  neither a nor b 
A)  1-butene 
B)  2-butene 
C)  both a and b 
D)  neither a nor b

Question 19

Which of the following is a correct IUPAC name?

Accepted Answer

A)  4-ethyl-1-methylcyclohexene 
B)  5-ethyl-2-methylcyclohexene 
C)  1-methyl-4-ethylcyclohexene 
D)  5-methyl-2-ethylcyclohexene 
A)  4-ethyl-1-methylcyclohexene 
B)  5-ethyl-2-methylcyclohexene 
C)  1-methyl-4-ethylcyclohexene 
D)  5-methyl-2-ethylcyclohexene

Question 20

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

Accepted Answer

A)  The alkene is always named based on the longest carbon chain. 
B)  The position of the double bond is always given the lowest possible number. 
C)  The position and identity of substituents determines the number associated with the position of the double bond. 
D)  None of the above is correct. 
A)  The alkene is always named based on the longest carbon chain. 
B)  The position of the double bond is always given the lowest possible number. 
C)  The position and identity of substituents determines the number associated with the position of the double bond. 
D)  None of the above is correct.

Exam 12: Alkenes and Alkynes

Which of the following reactions involves the addition of different groups to the two ends of a double bond?

Which of the following is true of ethylene?

Which product is formed by the chlorination of 2-butene?

What type of alcohol is formed by the hydration of 1-butene?

Which of the following structural features is never associated with cis-trans isomerism?

Currently there is extensive recycling of which of the following polymers?

Currently there is extensive recycling of which of the following polymers?

Given an alkane, an alkene, and an alkyne, each of which contains two carbon atoms, which compound will contain most hydrogen atoms?

Which of the following monomers can be used to prepare polystyrene?

Low-density polyethylene is produced from ethylene by using which of the following?

Which of the following is not a correct IUPAC name for an alkene?

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

Which of the following, all of which have the molecular formula C5H10, has cis and trans isomers?

Which of the following correctly characterizes the compound represented below?

When the following substance reacts with water in the presence of an acid, which of the following describes the reaction?

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

Which of the following is the starting material derived from natural gas that is used for the production of ethylene?

Markovnikov's rule is useful to predict the outcome of the reaction of hydrogen chloride with which of the following alkenes?

Which of the following is a correct IUPAC name?

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

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Which of the following, all of which have the molecular formula C₅H₁₀, has cis and trans isomers?