Question 1

The most widely used synthetic polymer is

Accepted Answer

A)   polyethylene.
B)   polyvinyl chloride.
C)   polystyrene.
D)   polytetrafluoroethylene (Teflon) .E) All of the above
F) None of the above

Question 2

Thermosetting resins will decompose rather than melt when they are heated to a high temperature.

Accepted Answer

A) True 
 B)False

Question 3

The word polymer means

Accepted Answer

A)   many parts.
B)   many sides.
C)   many rings.
D)   many carbons.E) B) and D)
F) B) and C)

Question 4

Which of the following is NOT true of composite materials?

Accepted Answer

A)   They contain high-strength fibers, often made from glass, graphite or ceramics.
B)   The fibers provide support to the composite material.
C)   The fibers are usually held together by a thermosetting condensation polymer.
D)   The composite materials are not very strong.E) B) and C)
F) A) and B)

Question 5

An object will be used in an environment that has a temperature range of -20°C to 10°C. The object must remain flexible and rubbery. It should have a Tg that is

Accepted Answer

A)   greater than 10°C.
B)   less than 10°C but greater than -20°C.
C)   exactly -20°C.
D)   less than -20°C.E) B) and C)
F) All of the above

Question 6

LDPE finds applications as

Accepted Answer

A)   plastic film.
B)   threaded bottle caps.
C)   drain pipes.
D)   plastic television trays.E) B) and C)
F) C) and D)

Question 7

Which of the following statements about biodegradable polymers is true?

Accepted Answer

A)   They will degrade quickly in a landfill.
B)   Thermosetting polymers are biodegradable, but thermoplastics are not.
C)   They often require specific temperatures or the presence of microorganisms in order to undergo degradation.
D)   Polyvinyl chloride is a biodegradable polymer.E) All of the above
F) B) and C)

Question 8

Which of the following is a naturally occurring polymer?

Accepted Answer

A)   celluloid
B)   nylon
C)   starch
D)   None of the above is a naturally occurring polymer.E) B) and C)
F) A) and D)

Question 9

The segment of a polymer shown below represents a

Accepted Answer

A)   polyamide.
B)   polyester.
C)   polyethylene.
D)   polystyrene.E) B) and C)
F) B) and D)

Question 10

Polyvinyl acetate is used for

Accepted Answer

A)   carpet.
B)   chewing gum resin.
C)   yarns.
D)   floor tile.E) None of the above
F) All of the above

Question 11

One of the advantages of incinerating plastics is

Accepted Answer

A)   the high fuel value.
B)   no air pollution.
C)   all polymers burn efficiently.
D)   All of the above are advantages of incinerating plastics.E) A) and C)
F) B) and C)

Question 12

In the vulcanization of rubber, sulfur

Accepted Answer

A)   is inserted into the carbon chain.
B)   breaks long carbon chains into smaller chains.
C)   forms links between polymer chains.
D)   links all chains into one long chain.E) B) and D)
F) B) and C)

Question 13

Polyethylene has double bonds, but ethylene does not.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following will result from adding a plasticizer to a polymer?

Accepted Answer

A)   They will have a higher glass transition temperature, Tg.
B)   They will be more rigid.
C)   They will be more transparent.
D)   They will be less brittle.E) A) and B)
F) None of the above

Question 15

The main use of elastomers is

Accepted Answer

A)   automobile tires.
B)   synthetic body parts.
C)   waxed paper.
D)   wigs.E) A) and B)
F) B) and C)

Question 16

This formula in which n can be a very large number represents which of the following polymers?

Accepted Answer

A)   polyethylene
B)   polyvinyl chloride
C)   polypropylene
D)   TeflonE) B) and C)
F) A) and B)

Exam 10: Polymers

In the vulcanization of rubber, sulfur

Correct Answer
verified

Which of the following is a naturally occurring polymer?

Correct Answer
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The main use of elastomers is

Correct Answer
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Thermosetting resins will decompose rather than melt when they are heated to a high temperature.

Correct Answer
verified

LDPE finds applications as

Correct Answer
verified

Polyvinyl acetate is used for

Correct Answer
verified

Which of the following will result from adding a plasticizer to a polymer?

Correct Answer
verified

The segment of a polymer shown below represents a

Correct Answer
verified

One of the advantages of incinerating plastics is

Correct Answer
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Which of the following statements about biodegradable polymers is true?

Correct Answer
verified

This formula in which n can be a very large number represents which of the following polymers?

Correct Answer
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Polyethylene has double bonds, but ethylene does not.

Correct Answer
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Which of the following is NOT true of composite materials?

Correct Answer
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An object will be used in an environment that has a temperature range of -20°C to 10°C. The object must remain flexible and rubbery. It should have a T_g that is

Correct Answer
verified

The word polymer means

Correct Answer
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The most widely used synthetic polymer is

Correct Answer
verified

Exam 10: Polymers

In the vulcanization of rubber, sulfur

Correct AnswerverifiedShow Answer

Which of the following is a naturally occurring polymer?

Correct AnswerverifiedShow Answer

The main use of elastomers is

Correct AnswerverifiedShow Answer

Thermosetting resins will decompose rather than melt when they are heated to a high temperature.

Correct AnswerverifiedShow Answer

LDPE finds applications as

Correct AnswerverifiedShow Answer

Polyvinyl acetate is used for

Correct AnswerverifiedShow Answer

Which of the following will result from adding a plasticizer to a polymer?

Correct AnswerverifiedShow Answer

The segment of a polymer shown below represents a

Correct AnswerverifiedShow Answer

One of the advantages of incinerating plastics is

Correct AnswerverifiedShow Answer

Which of the following statements about biodegradable polymers is true?

Correct AnswerverifiedShow Answer

This formula in which n can be a very large number represents which of the following polymers?

Correct AnswerverifiedShow Answer

Polyethylene has double bonds, but ethylene does not.

Correct AnswerverifiedShow Answer

Which of the following is NOT true of composite materials?

Correct AnswerverifiedShow Answer

An object will be used in an environment that has a temperature range of -20°C to 10°C. The object must remain flexible and rubbery. It should have a Tg that is

Correct AnswerverifiedShow Answer

The word polymer means

Correct AnswerverifiedShow Answer

The most widely used synthetic polymer is

Correct AnswerverifiedShow Answer

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An object will be used in an environment that has a temperature range of -20°C to 10°C. The object must remain flexible and rubbery. It should have a T_g that is

Correct Answer
verified

Correct Answer
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Correct Answer
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