Question 1

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

Question 2

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

Question 3

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

Question 4

The repeating unit of poly(methyl methacrylate) is shown below.Which one of the following is the monomer used to make poly(methyl methacrylate)?

Accepted Answer

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

Question 5

Which of the following sets of products results if nylon 66 is treated with sulfuric acid?

Accepted Answer

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

Question 6

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

Question 7

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

Accepted Answer

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

Question 8

What is the purpose of plasticizers?

Accepted Answer

A) To harden plastics 
B) To soften plastics 
C) To initiate polymerizations 
D) To cross-link polymer chains

Question 9

The monomer used to make superglue is shown below.Which of the following methods of polymerization is most suitable for this type of monomer?

Accepted Answer

A) Free-radical chain-growth 
B) Cationic chain-growth 
C) Anionic chain-growth 
D) Acid-catalyzed step-growth

Question 10

Which monomer and which type of initiator would you use to synthesize the following polymer?

Accepted Answer

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

Question 11

Vulcanization is the process of cross-linking polymer chains in rubber using what chemical?

Accepted Answer

A) Sulfur 
B) Formaldehyde 
C) Benzoyl peroxide 
D) Ethylene glycol

Question 12

What is the name given to polymers with single monomers?

Accepted Answer

A) Homopolymers 
B) Copolymers 
C) Block polymers 
D) Random polymers

Question 13

Identify the repeating unit in the polymer formed from the following reaction sequence.

Accepted Answer

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

Question 14

The acid-catalyzed dimerization of isobutylene gives a mixture of two isomeric alkenes, A and B.Hydrogenation of this mixture gives a single C8H18 hydrocarbon.What is the structure of this hydrocarbon?

Accepted Answer

A) 2,2,4-Trimethylpentane 
B) 2,3,4-Trimethylpentane 
C) 2,4-Dimethylhexane 
D) 2,5-Dimethyhexane

Question 15

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

Question 16

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

Exam 30: Synthetic Polymers

Which of the following is used to make Teflon?

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

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.)

The repeating unit of poly(methyl methacrylate) is shown below.Which one of the following is the monomer used to make poly(methyl methacrylate) ?

Which of the following sets of products results if nylon 66 is treated with sulfuric acid?

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

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

What is the purpose of plasticizers?

The monomer used to make superglue is shown below.Which of the following methods of polymerization is most suitable for this type of monomer?

Which monomer and which type of initiator would you use to synthesize the following polymer?

Vulcanization is the process of cross-linking polymer chains in rubber using what chemical?

What is the name given to polymers with single monomers?

Identify the repeating unit in the polymer formed from the following reaction sequence.

The acid-catalyzed dimerization of isobutylene gives a mixture of two isomeric alkenes, A and B.Hydrogenation of this mixture gives a single C₈H₁₈ hydrocarbon.What is the structure of this hydrocarbon?

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

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