POLYMERS – 2

1) Which of the following is a natural polymer ?
a) Nylon
b) Bakelite
c) Perspex
d) Gutta percha

2) Nylon may be dyed with
a) Acid dyes
b) Basic dyes
c) Both
d) none

3) Pick out the incorrect statement;
a) Silk and wools are polymers of proteins
b) Starch and cellulose are the polymers of glucose
c) Natural rubber is a polymer of isoprene
d) All plastics are biodegradable

4) Addition polymerisation is catalysed by
a) Free radicals
b) Lewis acids
c)
d) All of these

5) An example of an azo-dye is
a) Congo red
b) Butter yellow
c) Methyl orange
d) All of these

6) Wood and silk are dyed using
a) Direct dyes
b) Disperse dyes
c) Ingrain dyes
d) Mordanted dyes

7) Dynamite
a) Is a mixture of nitroglycerine with diatomaceous earth and sawdust
b)
c) was discovered by Alfred Nobel
d) All of these

8) Which of the following is used in making explosives ?
a) Methanol
b) Oxalic acid
c) Glycerol
d) Urea

9) Teflon, polystyrene and neoprene are all
a) Copolymers
b) Condensation polymers
c) Homopolymers
d) Monomers

10) A homopolymer is obtained by polymerisation of
a) One type of monomer unit
b) Two types of monomer units
c) Either of these
d) None of these

11) Thermosetting plastics
a) Are cross linked polymers
b) Do not melt or soften on heating
c) are those in which cross linking is usually developed at the time of moulding
d) All the above

12) Which one of the following is a protein fibre ?
a) Cotton
b) Rayon
c) Silk
d) Polyester

13) Natural and artificial silk differ in one respect, that one of them contains
a) N
b) S
c) P
d) None

14) Which of the following rubbers is not a polydiene ?
a) Polyisoprene
b) Polychloroprene
c) Thiokol
d) Nitrile rubber

15) Which of the following is not a cellulose product ?
a) Gun cotton
b) Celluloid
c) Rayon
d) Dacron

16) A copolymer of vinyl chloride and vinylidene chloride is
a) Dynel
b) Saran
c) Vinylon
d) Orlon

17) Which of the following natural products is not a polymer ?
a) Cellulose
b) DNA
c) ATP
d) Urease

18) Nylons, polyesters and cotton all possess strength due to
a) Intermolecular H-bonding
b) van der Waals attraction
c) Dipole dipole interaction
d) None of these

19) Which can absorb over 90% of its own mass of water and does not stick to a wound ?
a) Rayon
b) Gun cotton
c) Thiokol
d) Saran

20) Which of the following is not a natural polymer ?
a) Starch
b) Cellulose
c) Glycogen
d) Glyptal

21) Which of the following is not correct ?
a) PMMA is called plexiglass
b) PTFE is called teflon
c) SBR is called natural rubber
d) LDPE is low density polyethylene

22) Which of the following cannot be grouped as a polyolefin ?
a) Polythene
b) Polypropene
c) Polystyrene
d) Polyoxythene

23) Which polymer is generally used for carry bags ?
a) polyester
b) Bakelite
c) Polyethylene
d) Alkyl resin

24) A high molecular weight molecule built from a large number of simple molecules Is called a
a) Monomer
b) Isomer
c) Polymer
d) Tautomer

25) A high molecular weight molecule which does not contain repeating structural units is called a
a) Polymer
b) Macromolecule
c) Both (a) and (b)
d) None of the above

26) The simple molecules from which a polymer is made are called
a) Monomers
b) Metamers
c) Rotamers
d) Eantiomers

27) Which of the following is not a biopolymer?
a) Proteins
b) Nucleic acids
c) Cellulose
d) Neoprene

28) Which of the following is a synthetic polymer?
a) Starch
b) Silk
c) Protein
d) Polystyrene

29) Homopolymers are made from
a) Only one type of monomers
b) Two different types of monomers
c) Three different types of monomers
d) Several different types of monomers

30) Amongst the following,which is a homopolymer?
a) PMMA
b) Bakelite
c) Glyptal
d) Dacron

31) Which of the following is a copolymer ?
a) Buna-S
b) PAN
c) Polythene
d) PTFE

32) Which of the following is a linear polymer?
a) Nylon
b) Bakelite
c) Alkyl resin
d) Melamine-formaldehyde polymer

33) Amongst the following, the branched chain polymer is
a) PVC
b) Polyester
c) Low density polythene
d) Nylon-66

34) A copolymer of acrylonitrile and 1, 3-butadiene is called
a) Buna-N
b) Polystrene
c) Neoprene
d) Buna-S.

35) Which of the following is wrong?
a) PMMA is called plexiglass
b) PTFE is called teflon
c) SBR is natural rubber
d) LDPE is called low density polythene.

36) Which of the following statement/s is/are correct?
a) Vinyon is a copolymer of vinyl chloride and vinyl acetate
b) Saran is a copolymer of vinyl chloride and vinylidene chloride
c) Butyl rubber in a copolymer of isobutylene and isoprene
d) All are correct

37) Mark the correct statement about thiokol rubber
a) It is a synthetic polysulphide rubber
b) It is obtained by condensation of ethylene chloride with sodium tetrasulphide
c) It is resistant to oils and abrasion
d) All are correct

38) Which of the following pairs is not correctly matched?
a) Terylene—condensation polymer of terephthalic acid and ethylene glycol
b) Teflon—thermally stable cross linked polymer of phenol and formaldehyde
c) Perspex—A homopolymer of methyl methacrylate
d) Synthetic rubber—A copolymer of butadiene and styrene

39) Which of the following polymers contains 1, 3-butadiene as one of the monomers?
a) SBR
b) Nitrite rubber
c) ABS rubber
d) All the above

40) Which of the following is not an addition polymer ?
a) Polystyrene
b) PVC
c) Polypropylene
d) Nylon

41) An example of an addition copolymer is
a) Polythene
b) Butyl rubber
c) Neoprene
d) Natural rubber

42) Which of the following is an addition homopolymer ?
a) Polythene
b) Teflon
c) PVC
d) All the three above

43) Which of the following sets contain only addition homopolymers ?
a) Polythene, natural rubber, cellulose
b) Starch, nylon, polyester
c) Teflon, bakelite, orlon
d) Neoprene, PVC, polythene

44) Which of the following is not a condensation (step growth) polymer ?
a) Melamine-formaldehyde resin
b) Bakelite
c) Polythene
d) Polyester

45) An example of a condensation homopolymer is
a) Bakelite
b) Melamine-formaldehyde resin
c) Alkyl resin
d) Perlon or Nylon-6

46) A polymer formed by coordination polymerization is
a) Low density polythene
b) High density polythene
c) Nylon-6
d) Dacron

47) Low density polythene is prepared by
a) Free radical polymerization
b) Cationic polymerization
c) Anionic polymerization
d) Zeigler-Natta polymerization

48) The best way to prepare polyisobutylene is
a) Coordination polymerization
b) Free radical polymerization
c) Cationic polymerization
d) Anionic polymerization

49) Isoprene is
a) 1,3-Butadiene
b) 2-Methyl-1, 3-butadiene
c) 2-Methyoxy-1,3-butadiene
d) 2-Chloro-1,3-butadiene

50) Natural rubber is
a) Polyvinyl chloride
b) cis-Polyisoprene
c) trans-Polyisoprene
d) Polychloroprene

51) Gutta percha is
a) trans-polyisoprene
b) A synthetic polymer
c) A very hard material
d) All statements are correct

52) Natural silk is a
a) Polypeptide
b) Polysaccharide
c) Polychloroprene
d) Polyacrylonitrile

53) Artificial silk is a
a) Polypeptide
b) Polysaccharide
c) Polythene
d) Polyvinyl chloride

54) Which of the following is not a polyamide ?
a) Wool
b) Leather
c) Nylon
d) Natural rubber

55) Among the following polymers, the strongest intermolecular forces of attraction are present in Â
a) Elastomers
b) Fibres
c) Thermoplastics
d) Thermosetting polymers

56) Among the following, the weakest interparticle forces of attraction are present in
a) Thermosetting polymers
b) Thermoplastic polymers
c) Fibres
d) Elastomers

57) Thermoplastics are
a) Linear polymers
b) plastics which soften or melt on heating
c) Molten polymers which can be moulded in desired shapes
d) All are correct

58) Thermosetting polymers are
a) Cross-linked polymers
b) plastics which do not melt or soften on heating
c) plastics in which cross-linking occurs during heating when it hardens irreversibly
d) All are correct

59) Which of the following is not a thermosetting polymer ?
a) Alkyl resin
b) Bakelite
c) Melmac
d) SBR

60) Which are true for elastomers ?
a) They possess elasticity
b) possess weak intermolecular forces of attraction between polymer chains
c) Vulcanized rubber is an example of elastomer
d) All are correct

61) Which of the following can be remelted time and again without producing any change ?
a) Thermosetting polymers
b) Thermoplastic polymers
c) Bakelite
d) Melamine-formaldehyde polymer

62) The tensile strength, elasticity and resistance to abrasion can be increased by a process called
a) Diazotisation
b) Vulcanization
c) Isomerization
d) Polymerization

63) The process of vulcanization was introduced by
a) Charles Goodyear
b) Kolbe
c) Wohler
d) Zeigher

64) In vulcanization of rubber,
a) Sulphur reacts to form a new compound
b) Sulphur cross-links are introduced
c) Sulphur forms a very thin protective layer over rubber
d) All statement are correct

65) Vulcanized rubber resists
a) Wear and tear due to friction
b) Cryogenic temperature
c) High temperature
d) Action of acids

66) The polymer obtained by the condensation of sebacic acid and hexamethylenediamine is called
a) Nylon 66
b) Nylon 6
c) Nylon 610
d) Dacron

67) The linear chains in nylon are held together by
a) H-bonds
b) Covalent bonds
c) Ionic bonds
d)

68) Caprolactam needed for manufacture of nylon-6 is obtained by Beckmann rearrangement of
a) Benzophenone oxime
b) Acetophenone oxime
c) Cyclohexanone oxime
d) Cyclopentanone oxime

69) The repeating structural unit in neoprene is
a) Chloroprene
b) Chloropicrin
c) Chloroethene
d) Chlorotrifluoroethylene

70) The chemical name for Chloroprene is
a) 2-Methyl-1,3-butadiene
b) 2-Chloro-1,3-butadiene
c) 2, 3-Dimethyl-1, 3-butadiene
d) 2-Chloro-3-methyl-1,3-butadiene

71) Chloroprene is obtained by the addition of HCl to
a) Acetylene
b) Vinylacetylene
c) Divinylacetylene
d) Phenylacetylene

72) The monomer used for the manufacture of PVC is obtained by the addition of
a)
b)
c) HCI to ethylene
d)

73) To make PVC a flexible plastic, the additive used is called
a) Filler
b) Antioxidant
c) Stabilizer
d) Plasticizer

74) Which of the following cannot be used as a plasticizer ?
a) Diethyl phthalate
b) Di-n-butylphthalate
c) Di-n-octylphthalate
d) Tricresyl phosphate

75) A polymer of prop-2-enenitrile is called
a) Saran
b) Orlon
c) Dacron
d) Teflon

76) The polymer melmac is obtained by
a) Addition polymerization of melamine and formaldehyde
b) Condensation polymerization of melamine and formaldehyde
c) Coordination polymerization of melamine
d) Free-radical polymerization of tetra-fluoroethylene

77) The chemical name for melamine is
a) 1,3,5-Triamino-2,4,6-triazine
b) 2,4,6-Triamino-1,3,5-triazine
c) 2-Amino-1,3,5-triazine
d) 2,4-Diamino-1,3,5-triazine

78) Starch is the condensation polymer of
a)
b)
c)
d)

79) The repeating disaccharide unit of starch is
a) Lactose
b) Sucrose
c) Maltose
d) Cellobiose

80) Cellulose is a condensation polymer of
a)
b)
c)
d)

81) The repeating disaccharide unit of cellulose is
a) Cellobiose
b) Maltose
c) Lactose
d) Sucrose

82) A polymer which has better light transmission properties than even glass is
a) Perspex
b) Bakelite
c) Buna-S
d) Poly (ethyl acrylate)

83) The polymer used in the manufacture of electrical goods such as switches, plugs etc. is
a) Polythene
b) Bakelite
c) Melamine-formaldehyde resin
d) Neoprene

84) The polymer used for coating electrical wires, cables etc. is
a) Natural rubber
b) Neoprene
c) Nitrile rubber
d) PVC

85) A polymer which is commonly used as a packaging material is
a) Polythene
b) Polypropylene
c) PVC
d) Bakelite

86) A synthetic rubber which is resistant to the action of oils, gasoline and other solvents is
a) Buna-S
b) Polyisoprene
c) Neoprene
d) Polystyrene

87) The monomer unit of silicone, a water repellant, heat and acid resistant polymer, is
a) Si
b)
c)
d)

88) If N,, N2, N3……are the number of molecules with molecular masses M1, M2, M3……respectively, then the weight average molecular mass () is expressed as Â
a)
b)
c)
d)

89) If N,, N2, N3…… are the number of molecules with molecular masses M,, M2, M3…… respectively then the number average molecular mass ( ) is given by
a)
b)
c)
d)

90) Number average molecular mass () and weight average molecular mass () of synthetic polymers are related as
a)
b)
c)
d)

91) The abbreviation PDI refers to
a) Name of the polymer
b) Poly dispersity index
c)
d) Poly diagonal index

92) Polymerization occurs through the intermediate formation of Â
a) Carbocations
b) Carbanions
c) Free radicals
d) All the above

93) A polymer obtained by condensation polymerization is
a) Polythene
b) Teflon
c) Phenol-formaldehyde
d) Nitrile rubber

94) Which is an example of a thermosetting polymer ?
a) Polythene
b) PVC
c) Neoprene
d) Bakelite

95) Among the following which is an elastomer?
a) Natural rubber
b) Low sulphur rubber
c) Buna-S
d) All the above

96) Which one of the following can be used as a monomer in a polymerization reaction ?
a)
b)
c)
d)

97) The catalyst used in the manufacture of polyethylene by Ziegler method is Â
a) Titanium tetrachloride and triphenyl aluminium
b) Titanium tetrachloride and tri-ethylaluminium
c) Titanium dioxide
d) Titanium isopropoxide

98) Bakelite is obtained from phenol by reacting it with Â
a) Acetaldehyde
b) Acetal
c) Formaldehyde
d) Chlorobenzene

99) Synthetic human hair wigs are made from a copolymer of vinyl chloride and acrylonitrile called
a) PVC
b) Polyacrylonrtrile
c) Cellulose
d) Dynel

100) An example of a biopolymer is
a) Teflon
b) Rubber
c) Nylon-66
d) DNA


Answer :

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