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1000 Polymer Engineering
Quiz 1
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Q.1
Which of the following polymer type is not classified on the basis of its application and properties?
a) plastics
b) rubbers
c) synthetic
d) fibres
Q.2
Which of the following polymerization is also known as pearl polymerization?
a) emulsion polymerization
b) suspension polymerization
c) solution polymerization
d) bulk polymerization
Q.3
Which of the following reaction may allow the biphasic interfacial polymerization technique?
a) condensation polymerization
b) addition polymerization
c) both of the mentioned
d) none of the mentioned
Q.4
Which of the following is correct for the resultant polymer product formed, when molecules of phthalic acid react with molecules of glycerol?
a) cross-link polymer
b) linear polymer
c) branch polymer
d) none of the mentioned
Q.5
Polymer A, also available as copolymer with trifluoroethylene, is a crystalline polymer with a melting point greater thanᵒC and is used in coatings and insulation materials. What is the name of polymer A?
a) polytetrafluoroethylene
b) polyvinyl chloride
c) polyvinyl fluoride
d) polyvinylidene fluoride
Q.6
Which of the following polymerization technique allows the increase in both the rate and degree of polymerization simultaneously by increasing a certain parameter?
a) emulsion polymerization
b) suspension polymerization
c) solution polymerization
d) bulk polymerization
Q.7
What is the utilization of living polymerization?
a) synthesis of functional-ended polymers
b) monodisperse polymers
c) synthesis of block polymers
d) all of the mentioned
Q.8
Which of the following is the most widely used polymerization technique to produce polyvinyl actate?
a) emulsion polymerization
b) suspension polymerization
c) solution polymerization
d) all of the mentioned
Q.9
When should the measurement of the initiator decomposition be done?
a) independent of time
b) during polymerization
c) before polymerization
d) after polymerization
Q.10
Which of the following polymerization proceeds without the change in the composition of feed as well as copolymer?
a) ideal polymerization
b) azeotropic polymerization
c) alternate polymerization
d) block polymerization
Q.11
Which of the following polymers contains −C−C− linkages only?
a) condensation polymers
b) copolymers
c) addition polymers
d) none of the mentioned
Q.12
In which of the following polymer steric placements of the substituent are arranged in such a way to give alternate d and l configurations?
a) syndio-tactic polymer
b) isotactic polymer
c) atactic polymer
d) none of the mentioned
Q.13
Which of the following is true about polymer systems in polycondensation?
a) insoluble beyond a critical molecular weight
b) have higher viscosity than small non-polymeric molecules
c) both of the mentioned
d) none of the mentioned
Q.14
Which of the following is true about an end functional group, having a terminal reactive centre, of a polymer molecule?
a) cannot be determined
b) has greater mobility than the polymer molecule as a whole
c) has a lower mobility than the polymer molecule as a whole
d) same as polymer molecule
Q.15
Which of the following polymerization mechanism can polymerize the styrene monomer?
a) radical polymerization
b) anionic polymerization
c) cationic polymerization
d) all of the mentioned
Q.16
What does the ratio of number to weight average degree of polymerization for a bifunctional system represent?
c) breadth of molecular size
d) none of the mentioned
a) extent of reaction
b) degree of polymerization
Q.17
Which of the following monomer molecule’s presence could lead to the formation of cross linking polymer, when hydroxyl caproic acid and carboxyl acid monomers (f>are polymerized together?
a) ethanol
b) diamines
c) glycol
d) none of the mentioned
Q.18
Which of the following cannot initiate the chain reaction in polymerization of acrylo-nitrile?
a) coordination
b) anion
c) cation
d) free radical
Q.19
Which of the following reaction is not accompanied by elimination of a byproduct molecule?
a) condensation polymerization
b) addition polymerization
c) both of the mentioned
d) none of the mentioned
Q.20
Which of the following factors does initiator efficiency depend on?
a) polymerization condition
b) solvent
c) initiator molecules
d) all of the mentioned
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