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Q.1
Polyvinyl acetate is never used for making
Moulded articles
Fibres
Adhesives
All of the above
Q.2
Polymethyl methacrylate (PMMA) is known as
Bakelite
Teflon
Perspex
Nylon-6
Q.3
A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of
Siloxane elastomers
Polyamides
Vinyl polymers
Urea-formaldehyde resins
Q.4
Which of the following is stretched into fibres?
Saturated polyester
Unsaturated polyester
Isoprene
Bakelite
Q.5
Flexible plastic pipes are made of
High density polyethylene (HDPE)
Low density polyethylene (LDPE)
Polypropylene
Unsaturated polyester
Q.6
Synthetic polymer produced by using terephthalic acid and ethylene glycol is
Terylene
Nylon-66
PVC
Polyesterene
Q.7
Thermal pyrolysis of ethylene dichloride produces
Trichlorethylene
Vinyl chloride
Ethanol amine
Ethylene oxide
Q.8
The monomer of poly vinyl chloride (PVC) is
Chloroethene
Ethylene dichloride
Ethyl chloride
Chloroform
Q.9
Molecular weight of polymers are in the range of
10 to 10³
10²-10⁷
10⁷-10⁹
10⁹-10¹¹
Q.10
Identify the group in which all the polymers mentioned can be used to make fibres.
Butadiene copolymers, Polyamides, Urea aldehyde
Cellulose derivatives, Polyisoprene, Polyethylene
Cellulose derivatives, Polyamides, Polyurathane
Polypropylene, Poly vinyl chloride, Silicon
Q.11
Acrylonitrile is mainly used in the __________ industry.
Polymer
Printing
Dyeing
Photographic
Q.12
Non sulphonated hard bakelites are not used for making
Ion-exchange resins
Fountain pen barrels
Formica table tops
Combs
Q.13
Polyhexamethylene adipimide is also known as
Bakelite
Nylon-66
Epoxy resin
Silicone rubber
Q.14
Vulcanisation of rubber does not increase its
Elasticity
Plasticity
Ductility
None of these
Q.15
__________ fibres are made of polyamides.
Dacron
Nylon
Rayon
Orion
Q.16
Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from __________ resins.
Epoxy
Phenol formaldehyde
Urea formaldehyde
Melamine formaldehyde
Q.17
Epoxy resin is
Not used for surface coating
A good abrasive
An elastomer
A polyester
Q.18
Neoprene which is used for making shoe heels & belts is superior to natural rubber in its stability to aerial oxidation and resistance to oils & other solvents. The monomer used for making neoprene is
Chloroethane
Chlorophrene
Isoprene
None of these
Q.19
Neoprene is rendered non-inflammable, because of
Its cross-linked structure
Its linear chain structure
The presence of chlorine atoms in its monomer
The absence of chlorine atoms in its monomer
Q.20
Molecular weights of plastics ranges from
1000 to 5000
5000 to 1000
20000 to 25000
10⁹ to l0¹¹
Q.21
Elastomers are
Thermosetting material
Exemplified by protein derivatives
Having high flexural strength
Having very high tensile strength and heat resistance
Q.22
Polymerisation process in which two or more monomers of chemically different nature take part is called
Copolymerisation
Addition polymerisation
Chain polymerisation
None of these
Q.23
Cellulose is the main contituent of most __________ fibres.
Acrylic
Spandex
Synthetic
Natural
Q.24
Gutta parcha rubber is
Soft & tacky at room temperature
An isomer of natural rubber
A thermosetting resin
Recovered by coagulation of rubber latex
Q.25
Which of the following is an elastomer?
Thiokol
Phenol formaldehyde
Urea formaldehyde
Polystyrene
Q.26
The repeating units of PTFE are
Cl₂CH = CH₃
F₂ C = CF₂
F₃ C = CF₃
FClC = CF₂
Q.27
Thiokol is nothing but
Polysulphide rubber
Polyamide fibre
Engineering plastic
Exponded polystyrene
Q.28
Which of the following rubbers has the widest service temperature range (-75 to 275°C) ?
Butyl rubber
Silicon rubber
Nitrile rubber
Silicone rubber
Q.29
Phenol formaldehyde is produced by condensation polymerisation. It is also known as
Teflon
Bakelite
Polyester
Nylon-66
Q.30
Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of __________ percent.
1-1000
1000-1500
1500-2000
2000-2500
Q.31
Polyesters are manufactured by the polycondensation reaction of
Dibasic acid with dihydric alcohol
A single monomer
Carboxylic acid with ethylene
Inorganic acid with ethylene glycol
Q.32
Which of the following has the weakest intermolecular forces?
Polyisoprene
Nylon-66
Polystyrene
Bakelite
Q.33
__________ is a copolymer.
Nylon-66
Polyrophylene
PVC
Poly tetra flouro ethylene
Q.34
The conversion of caprolactum in the above case is about __________ percent.
25
50
70
90
Q.35
Neoprene is chemically known as
Polybutandiene
Styrene butadiene rubber (SBR)
Polyurethane
Poly chloroprene
Q.36
__________ are produced by reacting polybasic acid (e.g. phthalic anhydride) with polyhydric alcohol (e.g., glycerol).
Unsaturated polyester
Alkyd resins
Saturated polyester
Amino resins
Q.37
Silicone resins, which are highly water repellant and has good heat resistance can not be used
As room temperature adhesive
As grease & lubricant
Hydraulic fluid for heat transfer
Resin for lamination
Q.38
Ebonite is a/an
Highly vulcanised rubber
Natural rubber
Unvulcanised raw rubber
Adhesive
Q.39
Polymethyl methacrylate (PMMA) which is also known as perspex and is produced by bulk polymerisation of methyl methacrylate is not a __________ polymer.
Thermoplastic
Thermosetting
Linear
Glass like transparent
Q.40
The monomer of natural rubber is
DMT
Isoprene
2 methyl-1-propene
Both B and C
Q.41
Collapsible tubes for tooth paste are produced by __________ extrusion.
Direct
Indirect
Impact
None of these
Q.42
Nitrile rubber is produced by the polymerisation of
Acrylonitrile & butadiene
Acrylonitrile & styrene
Isobutylene & isoprene
None of these
Q.43
Cellulose content in bomboo fibre is about __________ percent.
10
20
50
85
Q.44
Thermocole (expanded polystyrene) is not used for
Low temperature thermal insulation as in refrigerator and air conditioners
Accoustic control and ceiling for building
High temperature thermal insulation in furnaces
Packing of delicate electronic gadgets
Q.45
Low density polythene as compared to high density polythene is
Harder
Tougher
Chemically inert
More flexible
Q.46
Caprolactum, a raw material for the manufacture of nylon-6, is produced from
Phenol
Naphthalene
Benzene
Pyridine
Q.47
Buna-N is also called
Butyl rubber
Nitrile rubber
Neoprene
Thiokol
Q.48
Dacron is a
Condensation polymerisation product of hexamethylene diamine and adipic acid
Condensation polymerisation product of dimethyl terephthalate (DMT) and ethylene glycol
Thermosetting material
None of these
Q.49
Dacron is a/an
Polyester
Unsaturated polyester
Polyamide
Inorganic polymer
Q.50
Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styrene-acrylonitfile copolymer with butadiene based elastomer, is a/an
Rigid foam
Engineering plastic
Thermosetting polymer
Spongy rubber
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