Question 1

Which of the following is the repeating unit of the polymer formed in the polymerization of p-hydroxybenzoic acid?

Accepted Answer

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

Question 2

Which of the following is used to make Teflon?

Accepted Answer

A)  fluoroethene 
B)  1,1,4,4-tetrafluorobutadiene 
C)  1,2-difluoroethene 
D)  tetrafluoroethylene 
A)  fluoroethene 
B)  1,1,4,4-tetrafluorobutadiene 
C)  1,2-difluoroethene 
D)  tetrafluoroethylene

Question 3

Which of the following is the repeating unit of the polymer formed in the polymerization reaction shown below?

Accepted Answer

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

Question 4

Which of the following best describes the polymer chain shown below?

Accepted Answer

A)  atactic polypropylene 
B)  isotactic polypropylene 
C)  syndiotactic polypropylene 
D)  cross-linked polypropylene 
A)  atactic polypropylene 
B)  isotactic polypropylene 
C)  syndiotactic polypropylene 
D)  cross-linked polypropylene

Question 5

Which of the following monomers yields the polymer shown below?

Accepted Answer

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

Question 6

What is the classification of the following polymer in which X and Y represent repeating units?

Accepted Answer

A)  block copolymer 
B)  homopolymer 
C)  alternating copolymer 
D)  random copolymer 
A)  block copolymer 
B)  homopolymer 
C)  alternating copolymer 
D)  random copolymer

Question 7

What is the name given to polymers that soften when heated and harden when cooled?

Accepted Answer

A)  cross-linked polymers 
B)  copolymers 
C)  thermosetting polymers 
D)  thermoplastics 
A)  cross-linked polymers 
B)  copolymers 
C)  thermosetting polymers 
D)  thermoplastics

Question 8

Which of the following is (are) repeating unit(s) of step-growth polymers?

Accepted Answer

A)  Only I 
B)  Only II 
C)  Only III 
D)  I and II 
A)  Only I 
B)  Only II 
C)  Only III 
D)  I and II

Question 9

Which one of the following monomers undergoes cationic polymerization most readily?

Accepted Answer

A)  H2C=CH2 
B)  H2C=CHCH3 
C)  H2C=C(CH3)2 
D)  H2C=CHCN 
A)  H2C=CH2 
B)  H2C=CHCH3 
C)  H2C=C(CH3)2 
D)  H2C=CHCN

Question 10

Which type of polymerization process uses benzoyl peroxide (or other peroxides) as an initiator?

Accepted Answer

A)  free-radical chain-growth 
B)  cationic chain-growth 
C)  anionic chain-growth 
D)  acid-catalyzed step-growth 
A)  free-radical chain-growth 
B)  cationic chain-growth 
C)  anionic chain-growth 
D)  acid-catalyzed step-growth

Question 11

Which of the following is (are) addition polymer(s)? I. polypropylene
II) Teflon
III) nylon

Accepted Answer

A)  Only I 
B)  Only II 
C)  Only III 
D)  Both I and II 
A)  Only I 
B)  Only II 
C)  Only III 
D)  Both I and II

Question 12

Which of the following initiators can be used for anionic chain-growth polymerization?

Accepted Answer

A)  benzoyl peroxide 
B)  CH3CH2CH2CH2Li 
C)  BF3 
D)  Al(CH2CH3)3, TiCl4 
A)  benzoyl peroxide 
B)  CH3CH2CH2CH2Li 
C)  BF3 
D)  Al(CH2CH3)3, TiCl4

Question 13

Which of the following initiators is used to make isotactic polypropylene?

Accepted Answer

A)  benzoyl peroxide 
B)  CH3CH2CH2CH2Li 
C)  BF3 
D)  Al(CH2CH3)3, TiCl4 
A)  benzoyl peroxide 
B)  CH3CH2CH2CH2Li 
C)  BF3 
D)  Al(CH2CH3)3, TiCl4

Question 14

Bakelite is formed by the acid-catalyzed polymerization of phenol with formaldehyde. What is (are) the product(s) of the first step in this polymerization, shown below? (Note: in the answers below the hydroxymethyl group is -CH2OH.)

Accepted Answer

A)  ortho and para-hydroxybenzaldehyde 
B)  meta-hydroxybenzaldehyde 
C)  ortho and para-(hydroxymethyl)phenol 
D)  meta-(hydroxymethyl)phenol 
A)  ortho and para-hydroxybenzaldehyde 
B)  meta-hydroxybenzaldehyde 
C)  ortho and para-(hydroxymethyl)phenol 
D)  meta-(hydroxymethyl)phenol

Question 15

Melamine and formaldehyde combine to form the polymer, Melmac®. How is Melmac® classified, and what physical characteristics are consistent with its structure?

Accepted Answer

A)  polycarbonate, transparent 
B)  polyurethane, elastic 
C)  thermosetting, rigid 
D)  thermoplastic, can be melted and molded into new shapes 
A)  polycarbonate, transparent 
B)  polyurethane, elastic 
C)  thermosetting, rigid 
D)  thermoplastic, can be melted and molded into new shapes

Question 16

Which of the following monomers is used to make the polymer carbowax, shown below?

Accepted Answer

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

Question 17

What is the name given to polymers with two or more different monomers?

Accepted Answer

A)  homopolymers 
B)  copolymers 
C)  block polymers 
D)  random polymers 
A)  homopolymers 
B)  copolymers 
C)  block polymers 
D)  random polymers

Question 18

Which of the following is the repeating unit in polyvinyl chloride (PVC)?

Accepted Answer

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

Question 19

Which of the following best describes the polymer chain shown below?

Accepted Answer

A)  atactic polypropylene 
B)  isotactic polypropylene 
C)  syndiotactic polypropylene 
D)  cross-linked polypropylene 
A)  atactic polypropylene 
B)  isotactic polypropylene 
C)  syndiotactic polypropylene 
D)  cross-linked polypropylene

Question 20

What is the classification of the following polymer in which X and Y represent repeating units?

Accepted Answer

A)  block copolymer 
B)  homopolymer 
C)  alternating copolymer 
D)  random copolymer 
A)  block copolymer 
B)  homopolymer 
C)  alternating copolymer 
D)  random copolymer

Exam 31: Synthetic Polymers

Which of the following is the repeating unit of the polymer formed in the polymerization of p-hydroxybenzoic acid?

Which of the following is used to make Teflon?

Which of the following is the repeating unit of the polymer formed in the polymerization reaction shown below?

Which of the following best describes the polymer chain shown below?

Which of the following monomers yields the polymer shown below?

What is the classification of the following polymer in which X and Y represent repeating units?

What is the name given to polymers that soften when heated and harden when cooled?

Which of the following is (are) repeating unit(s) of step-growth polymers?

Which one of the following monomers undergoes cationic polymerization most readily?

Which type of polymerization process uses benzoyl peroxide (or other peroxides) as an initiator?

Which of the following is (are) addition polymer(s)? I. polypropylene II) Teflon III) nylon

Which of the following initiators can be used for anionic chain-growth polymerization?

Which of the following initiators is used to make isotactic polypropylene?

Bakelite is formed by the acid-catalyzed polymerization of phenol with formaldehyde. What is (are) the product(s) of the first step in this polymerization, shown below? (Note: in the answers below the hydroxymethyl group is -CH2OH.)

Melamine and formaldehyde combine to form the polymer, Melmac®. How is Melmac® classified, and what physical characteristics are consistent with its structure?

Which of the following monomers is used to make the polymer carbowax, shown below?

What is the name given to polymers with two or more different monomers?

Which of the following is the repeating unit in polyvinyl chloride (PVC)?

Which of the following best describes the polymer chain shown below?

What is the classification of the following polymer in which X and Y represent repeating units?

Structure and Bonding

Acids and Bases

Introduction to Organic Molecules and Functional Groups

Alkanes

Stereochemistry

Understanding Organic Reactions

Alkyl Halides and Nucleophilic Substitution

Alkyl Halides and Elimination Reactions

Alcohols, Ethers and Epoxides

Alkenes

Alkynes

Oxidation and Reduction

Mass Spectrometry and Infrared Spectroscopy

Nuclear Magnetic Resonance Spectroscopy

Radical Reactions

Conjugation, Resonance, and Dienes

Benzene and Aromatic Compounds

Electrophilic Aromatic Substitution

Carboxylic Acids and the Acidity of the O-H Bond

Introduction to Carbonyl Chemistry; Organometallic Reagents; Oxidation and Reduction

Aldehydes and Ketones Nucleophilic Addition

Carboxylic Acids and Derivatives

Substitution Reactions of Carbonyl Compounds at the Alpha-Carbon

Carbonyl Condensation Reactions

Amines

Carbon-Carbon Bond Forming Reactions in Organic Synthesis

Pericyclic Reactions

Carbohydrates

Amino Acids and Proteins

Lipids

Filters

Bakelite is formed by the acid-catalyzed polymerization of phenol with formaldehyde. What is (are) the product(s) of the first step in this polymerization, shown below? (Note: in the answers below the hydroxymethyl group is -CH₂OH.)

Melamine and formaldehyde combine to form the polymer, Melmac^®. How is Melmac^® classified, and what physical characteristics are consistent with its structure?