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Polymers
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Q.1
Polymers not made by condensation polymerisation
Nylon
Kevlar
Polyester
PVC
Q.2
In condensation polymerisation the byproduct formed is
Oxygen
Carbondioxide
Water
Hydrogen
Q.3
The properties of Polymer is determined by
Monomer
Temperature
Pressure
All of above
Q.4
Once formed, it can be heated and reformed over and over again
thermoset
thermoplastic
elastomer
kevlar
Q.5
A polymer made in the laboratory (or industry) usually made from petrochemicals
nature polymer
natural polymer
protein
synthetic polymer
Q.6
Which of the following is a type of natural polymer?
Sodium Alginate
poly vinyl acetate
polystyrene
polytetrafluoroethylene
Q.7
Which is not a naturally occuring polymer
DNA
Teflon
Starch
Silk
Q.8
Which below are natural polymers?
Cellulose
Nylon
Silk
Polyester
Q.9
One explanation for Teflon's low coefficient of friction, hydrophobic and biologically inert properties is.
The electronegativity of Fluorine
The thin, smooth surface is impossible for another molecule to create a cross-link
The IMF of the individual monomers in the structure make it difficult for other molecules to bond.
The highly branched and cross-linked nature of the polymer doesn't create any areas of adhesion for other molecules.
Q.10
A thermoplastic polymer will be ______________________.below its glass transition temperature.
soft and flexible
rigid and brittle
translucent
rubbery
Q.11
The birefringence effect that occurs when a polymer is viewed between two polarizing filters represents the _________________ regions of the polymer.
Crystalline
Amorphous
Cross-Linked
Branched
Q.12
Sodium alginate is
synthesized in the lab by heating salt in the presence of hydrophobic molecules.
a natural polymer obtained from kelp and seaweed
used as a synthetic replacement for salt.
not a polymer.
Q.13
The term degree of polymerisation refers to
The length of polymer chain.
How well the plastic has been educated.
The number of atoms in the monomer.
The strength of the bonds in a polymer chain.
Q.14
Polymers are derived from what raw materials?
Fossil fuels
Wood pulp
Clay
Metallic oxides
Q.15
Which of the following types of chains would be found in a thermo plastic?
Cross linked chain
Branched chain
Laminated chain
Continuous chain
Q.16
ABS is which sort of polymer?
Thermo plastic
Thermosetting plastic
Elastomer
Composite
Q.17
Urea formaldehyde is which sort of polymer?
Thermo setting
Thermo plastic
Elastomer
Composite
Q.18
Which of the words given below best describe the structure of a polymer?
Crystalline
Grain
Amorphous
Laminated
Q.19
Which of the following are found in the structure of a polymer?
Chains
Grains
Brains
Lanes
Q.20
Which two of the following are plastic forming processes?
Blow moulding
Rotational moulding
Upset moulding
Line moulding
Both A & B
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