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Self-Assessment 9: Polymers

Total questions: 48

Worksheet time: 25mins

Name
Class
Date
1.

Which polymer type is not classified by application and properties?

a)

rubbers

b)

plastics

c)

fibres

d)

synthetic

2.
Which of the following is a thermosetting polymer?
a)
polystyrene
b)
polyolefins
c)
nylons
d)
phenolic resins
3.

What type of polymer is formed when phthalic acid reacts with glycerol?

a)

branch polymer

b)

cross-link polymer

c)

linear polymer

d)

none of these

4.

Which polymer exhibits a lower value of molar cohesion?

a)

wool

b)

silk

c)

vulcanized rubber

d)

polystyrene

5.

Which polymers are known for their high crystallinity?

a)

isotactic

b)

syndiotactic

c)

atactic

d)

none of these

6.
Kevlar is commercial name for
a)
Glass fibers
b)
Carbon fibers
c)
Aramid fibers
d)
Cermets
7.

Characteristic property of polymer material

a)

high temperature stability

b)

high mechanical strength

c)

high elongation

d)

low hardness

8.
Polymers are ______ in nature.
a)
organic
b)
inorganic
c)
organic and inorganic
d)
none of these
9.
Elastic deformation in polymers is due to
a)
slight adjust of molecular chains
b)
slippage of molecular chains
c)
straightening of molecular chains
d)
severe of covalent bonds
10.
Polymers that cannot be recycled
a)
Thermoplasts
b)
Thermosets
c)
Elastomers
d)
All polymers
11.
In general, the strongest polymer group is
a)
Thermoplasts
b)
Thermosets
c)
Elastomers
d)
All polymers
12.
These polymers consist of coil-like polymer chains
a)
Thermoplasts
b)
Thermosets
c)
Elastomers
d)
All polymers
13.

Strong covalent bonds exist between polymer chains in

a)

Thermoplasts

b)

Thermosets

c)

Elastomers

d)

All polymers

14.
The word polymer is meant for materials made from?
a)
single entity
b)
two entities
c)
multiple entities
d)
any entity
15.

Unique to polymeric materials

a)

elasticity

b)

viscoelasticity

c)

plasticity

d)

none of these

16.

The small molecules that form large molecules are called _________.

a)

Polymer

b)

Monomers

c)

Copolymers

d)

Economer

17.

It is composed of the protein keratin, which consists of long polypeptide chains built from eighteen different amino acids.

a)

DNA

b)

Cellulose

c)

Wool

d)

Protein

18.

It is a transparent plastic material with outstanding strength, stiffness and optical clarity. It is easy to fabricate and has superior weathering properties compared to many other transparent plastics.

a)

Silk

b)

Acrylic

c)

Wool

d)

Polymer

19.

Of what range can elastomers stretch and return to their original lengths?

a)

80% - 100%

b)

500% - 1000%

c)

50% - 100%

d)

800% - 1000%

20.

What structure of polymers are tied together via covalent bonding?

a)

Linear Polymers

b)

Branched Polymers

c)

Cross-linked Polymers

d)

Network Polymers

21.

At what degree Celsius does thermoplastic reach its softening point?

a)

20 degree Celsius

b)

250 degree Celsius

c)

25 degree Celsius

d)

200 degree Celsius

22.

It is a natural polymer from insects and spiders, composed of sericin and fibroin. Fibroin is FDA-approved for some medical devices.

a)

Silk

b)

Wool

c)

Nylon

d)

Cellulose

23.

Nylon 6,6 is an example of

a)

copolymer

b)

addition polymer

c)

isotactic

d)

syndiotactic

24.

What recycling number is the least environmentally friendly?

a)

1

b)

2

c)

3

d)

4

25.

Contributes to the flexibility of the polymer

a)

atoms are relatively free to rotate around the C-C backbone

b)

Straight chain

c)

Rigidity

d)

hexagonal arrangement

26.

Polymers can be stiffened through

a)

cross-linking

b)

alloying

c)

ordering

d)

close packing

27.

Buckminsterfullerene is made up of ______ Carbon atoms.

a)

60

b)

32

c)

12

d)

24

28.

Allotrope of carbon studied as a nanomaterial

a)

graphene

b)

graphite

c)

diamond

d)

granite

29.

The material that is difficult to recycle is

a)

polystyrene

b)

polyethylene terephthalate

c)

polyvinyl chloride

d)

low-density polyethylene

30.

Type of polymerization reaction that breaks the double bond of monomers

a)

addition

b)

condensation

c)

oxidation

d)

carboxylation

31.

Nylon is which sort of polymer?

a)

Thermosetting

b)

Elastomer

c)

Ferrous

d)

Thermo plastic

32.

Urea formaldehyde is which sort of polymer?

a)

Thermo setting

b)

Thermo plastic

c)

Elastomer

d)

Composite

33.

Which of the words given below best describe the structure of a polymer?

a)

Crystalline

b)

Grain

c)

Amorphous

d)

Laminated

34.

Which of the following types of chains would be found in a thermo plastic?

a)

Cross linked chain

b)

Branched chain

c)

Laminated chain

d)

Continuous chain

35.

Which type of chain would be found in a thermosetting plastic?

a)

Branched chain

b)

Continuous chain

c)

Cross linked chain

d)

Linear chain

36.

Polymers are derived from what raw materials?

a)

Fossil fuels

b)

Wood pulp

c)

Clay

d)

Metallic oxides

37.

Which two of the following are plastic forming processes?

a)

Sand casting

b)

Rotational moulding

c)

Upset moulding

d)

Line moulding

e)

Blow moulding

38.

Thermosetting Plastics

a)

Can be reshaped using heat and pressure.

b)

Are lighter plastics

c)

Can be recycled

d)

Can not be reshaped using heat and pressure

39.

Which of the following is a non-flammable plastic?

a)

Nylon

b)

HIPS

c)

PVC

d)

ABS

40.

The type of chain structure shown here is referred to as a

a)

Mesh chain

b)

Branched chain

c)

Cross linked chain

d)

linear chain

41.

The term degree of polymerisation refers to

a)

The length of polymer chain.

b)

How well the plastic has been educated.

c)

The number of atoms in the monomer.

d)

The strength of the bonds in a polymer chain.

42.
Proteins are composed of what smaller subunits?
a)
amino acids
b)
nucleic acids
c)
fatty acids
d)
nucleotides
43.
Starch is composed of what monomers?
a)
sucrose
b)
glucose
c)
nucleic acids
d)
glycogen
44.
What are the monomers of DNA?
a)
glycerols
b)
amino acids
c)
fatty acids
d)
nucleotides
45.
Why do you think people use plastic for their products ?
a)
Because it's strong
b)
Because its very cheap and it's easy to make
c)
Because it's expensive
d)
Because it's rare and it's good for the enviorment
46.

Define polymer

a)

circular molecule made with many repeating units

b)

short molecule made of a few repeating units

c)

long, chain-like molecule made of repeating units

d)

chain-like molecule that contains hydrogen and oxygen

47.

What is the process to make long polymer (plastic) chains?

a)

Fractional Distillation

b)

Curing

c)

Fracking

d)

Polymerization

48.

What kind of chemical bonds create polymers?

a)

ionic

b)

covalent

c)

hydrogen

d)

metallic

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