Question 1

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 A

Question 2

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 B

Question 3

What modification occurs when a small amount of p-divinylbenzene is added to the polymerization reaction of styrene to form polystyrene? (Recall that the vinyl group is -CH=CH2.)

Accepted Answer

A) Cross-linking of the polystyrene 
B) Isotactic stereochemistry of the polystyrene 
C) Syndiotactic stereochemistry of the polystyrene 
D) "Softening" of the polystyrene by a plasticizer 
A) Cross-linking of the polystyrene 
B) Isotactic stereochemistry of the polystyrene 
C) Syndiotactic stereochemistry of the polystyrene 
D) "Softening" of the polystyrene by a plasticizer A

Question 4

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 5

What is the name given to polymers with single monomers?

Accepted Answer

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

Question 6

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 7

Identify the monomer(s)needed to make the following polyester.

Accepted Answer

A) 3-Hydroxybutanoic acid 
B) Butanedioic acid 
C) Butanedioic acid and ethylene glycol 
D) Butanedioic acid and ethanol 
A) 3-Hydroxybutanoic acid 
B) Butanedioic acid 
C) Butanedioic acid and ethylene glycol 
D) Butanedioic acid and ethanol

Question 8

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

Question 9

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

Question 10

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 11

In which type of polymer are the chains packed less tightly together,resulting in lower melting points and a softer texture?

Accepted Answer

A) Isotactic polymers 
B) Syndiotactic polymers 
C) Atactic polymers 
D) Cross-linked polymers 
A) Isotactic polymers 
B) Syndiotactic polymers 
C) Atactic polymers 
D) Cross-linked polymers

Question 12

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 13

The repeating unit of a polymer is shown below.This polymer is formed by

Accepted Answer

A) addition of ethylene. 
B) addition of trans-2-butene. 
C) 1,2 addition of butadiene. 
D) 1,4 addition of butadiene. 
A) addition of ethylene. 
B) addition of trans-2-butene. 
C) 1,2 addition of butadiene. 
D) 1,4 addition of butadiene.

Question 14

What monomer(s)would be used to make the polyester shown below?

Accepted Answer

A) Butanedioic acid 
B) 4-Hydroxybutanal 
C) 4-Hydroxybutanoic acid 
D) Butanedioic acid and 1,4-butanediol 
A) Butanedioic acid 
B) 4-Hydroxybutanal 
C) 4-Hydroxybutanoic acid 
D) Butanedioic acid and 1,4-butanediol

Question 15

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 16

Which one of the following monomers undergoes anionic 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 17

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 18

Rank the following monomers (X,Y and Z)in order of increasing ability to undergo anionic polymerization,starting with the least reactive monomer.

Accepted Answer

A) Y< X < Z 
B) Z < Y < X 
C) X < Y < Z 
D) Y < Z < X 
A) Y< X < Z 
B) Z < Y < X 
C) X < Y < Z 
D) Y < Z < X

Question 19

What is the structure of the polymer which results when styrene is reacted with BF3 and H2O?

Accepted Answer

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

Question 20

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

Exam 28: Synthetic Polymers

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

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

What modification occurs when a small amount of p-divinylbenzene is added to the polymerization reaction of styrene to form polystyrene? (Recall that the vinyl group is -CH=CH2.)

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

What is the name given to polymers with single monomers?

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

Identify the monomer(s)needed to make the following polyester.

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

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 (are)repeating unit(s)of step-growth polymers?

In which type of polymer are the chains packed less tightly together,resulting in lower melting points and a softer texture?

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

The repeating unit of a polymer is shown below.This polymer is formed by

What monomer(s)would be used to make the polyester shown below?

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

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

Which of the following monomers yields the polymer shown below?

Rank the following monomers (X,Y and Z)in order of increasing ability to undergo anionic polymerization,starting with the least reactive monomer.

What is the structure of the polymer which results when styrene is reacted with BF3 and H2O?

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

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 Related Compounds

Alkenes and Addition Reactions

Alkynes and Synthesis

Oxidation and Reduction

Radical Reactions

Conjugation,resonance,and Dienes

Benzene and Aromatic Compounds

Reactions of Aromatic Compounds

Introduction to Carbonyl Chemistry; Organometallic Reagents; Oxidation and Reduction

Aldehydes and Ketones - Nucleophilic Addition

Carboxylic Acids and the Acidity of the O-H Bond

Carboxylic Acids and Their Derivatives Nucleophilic Acyl Substitution

Substitution Reactions of Carbonyl Compounds at the a Carbon

Carbonyl Condensation Reactions

Amines

Carbon-Carbon Bond-Forming Reactions in Organic Synthesis

Pericyclic Reactions

Carbohydrates

Amino Acids and Proteins

Lipids

Spectroscopy A: Mass Spectrometry

Spectroscopy B: Infrared Spectroscopy

Spectroscopy C: Nuclear Magnetic Resonance Spectroscopy

Filters

What modification occurs when a small amount of p-divinylbenzene is added to the polymerization reaction of styrene to form polystyrene? (Recall that the vinyl group is -CH=CH₂.)

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?

What is the structure of the polymer which results when styrene is reacted with BF₃ and H₂O?