Question 1

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

Accepted Answer

A)   A
B)   B
C)   C
D)   DE) B) and D)
F) A) and D)

Question 2

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=CHCNE) A) and C)
F) None of the above

Question 3

Melamine and formaldehyde combine to form the polymer, Melmac®. How is Melmac® classified, and what physical characteristics are consistent with its structure? ®. How is Melmac® classified, and what physical characteristics are consistent with its structure?   A)  polycarbonate, transparent B)  polyurethane, elastic C)  thermosetting, rigid D)  thermoplastic, can be melted and molded into new shapes" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

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

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 copolymerE) None of the above
F) B) and C)

Question 5

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

Accepted Answer

A)   homopolymers
B)   copolymers
C)   block polymers
D)   random polymersE) A) and B)
F) B) and C)

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, TiCl4E) All of the above
F) C) and D)

Question 7

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

Accepted Answer

A)   A
B)   B
C)   C
D)   DE) A) and B)
F) All of the above

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 IIE) A) and C)
F) A) and D)

Question 9

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 polypropyleneE) A) and D)
F) None of the above

Question 10

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 polypropyleneE) C) and D)
F) B) and D)

Question 11

Which of the following monomers yields the polymer shown below?

Accepted Answer

A)   A
B)   B
C)   C
D)   DE) C) and D)
F) A) and B)

Question 12

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)   thermoplasticsE) A) and D)
F) B) and D)

Question 13

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 IIE) None of the above
F) A) and D)

Question 14

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

Accepted Answer

A)   benzoyl peroxide
B)   CH3CH2CH2CH2Li
C)   BF3
D)   Al(CH2CH3) 3, TiCl4E) C) and D)
F) All of the above

Question 15

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 copolymerE) B) and C)
F) C) and D)

Question 16

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.)  2OH.)    A)  ortho and para-hydroxybenzaldehyde B)  meta-hydroxybenzaldehyde C)  ortho and para-(hydroxymethyl) phenol D)  meta-(hydroxymethyl) phenol" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   ortho and para-hydroxybenzaldehyde
B)   meta-hydroxybenzaldehyde
C)   ortho and para-(hydroxymethyl) phenol
D)   meta-(hydroxymethyl) phenolE) A) and B)
F) All of the above

Question 17

Which of the following is used to make Teflon?

Accepted Answer

A)   fluoroethene
B)   1,1,4,4-tetrafluorobutadiene
C)   1,2-difluoroethene
D)   tetrafluoroethyleneE) A) and C)
F) A) and D)

Question 18

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-growthE) A) and B)
F) A) and D)

Question 19

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)   DE) C) and D)
F) B) and C)

Question 20

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)   DE) None of the above
F) A) and D)

Exam 31: Synthetic Polymers

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

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Which of the following monomers yields the polymer shown below?

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

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

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

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

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Which of the following is used to make Teflon?

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

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

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

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

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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.)

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

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

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

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

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

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

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

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

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

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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.)

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