Download Multiple choice questions Unit III: Synthetic organic polymers 1

Multiple choice questions
Unit III: Synthetic organic polymers
1.Polymer formed by the polymerization of hexamethylene diamine and adipic acid is
i)Teflon
ii)Nylon 6,10
iii)Nylon 6,6
iv)Bakelite
2.Polymer obtained by the polymerization of only one type of monomer molecule is
i)Homopolymer
ii)Copolymer
iii)Heteropolymer
iv)Addition polymer
3.Polymer obtained by the polymerization of two or more different types of monomer molecules is
i)Homopolymer
ii)Copolymer
iii)Heteropolymer
iv)Addition polymer
4.Stereoregular polymers are
i)Isotactic, syndiotactic, atactic
ii)Natural and synthetic
iii)Addition and condensation
iv)Elastomers, plastics and fibres
5.Compounding converts
i)Plastics in to resins
ii)Resins in to plastics
iii)Vulcanized rubber
iv)All the above
6.Polymerisation of tetra fluoro ethylene yields
i)PTFE
ii)PMMA
iii)Butyl rubber
iv)Bakelite
7.Plexi glass (PMMA) is obtained by the polymerization of
i)Methyl meth acrylate
ii)Isobutylene
iii)Isocyanate
iv)Urethane
8.Teflon is made soft by adding
i)Di -iso n –butyl phthalate
ii)Quartz
iii)Silicate
iv)Camphor 1
9.Disproportionation of polymer chain growth yields
i)Polymer with longer chain length
ii)Two polymers with shorter chain lengths
iii)Three Polymers
iv)Any of the above is possible
10.Degree of crystallinity
i)Decreases Tg value
ii)Stabilises Tg value
iii)Increases Tg value
iv)Does not affect Tg value
11.Mol wt of a polymer usually
i)Decreases Tg value
ii)Stabilises Tg value
iii)Increases Tg value
iv)Does not affect Tg value
12.Branching in the polymer chain
i)Decreases Tg value
ii)Stabilises Tg value
iii)Increases Tg value
iv)Does not affect Tg value
13.Which of the following polymer is a very good
insulator
i)Nylon 6,6
ii)Teflon
iii)Polyethylene
iv)Neoprene
14.Repeating unit present in natural rubber is
i)Isoprene
ii)Chloroprene
iii)Butane
iv)Propene
15.Repeating unit present in neoprene rubber is
i) Isoprene
ii)Chloroprene
iii)Butane
iv)Propene
16.Polyureathane is formed by the polymerization of
i)Isobutylene and isoprene
ii)Phenol and formaldehyde
iii)Di isocyanate and diol
iv)Urethane
17.Bakelite is a polymer of
i)Phenol and formaldehyde
ii)Urea and formaldehyde
iii)2-methyl, 1,3-butadiene
iv)Di isocyanate and diol
18.Polymer used as cement to hold electric bulb to hold their metal holders is
i)Bakelite
ii)Novolac
iii)Butyl rubber
iv)Polyurethane
19.Polymer used in army weapons is
i)Bakelite
ii)Teflon
iii)Urea-formaldehyde resin
iv)None of the above
20.IUPAC name of chloroprene is
i)2-chloro-1,3-butadiene
ii)2-methyl-1,3-butadiene
iii)Isobutene
iv)Isobutene and isoprene
21.IUPAC name of isoprene is
i)2-chloro-1,3-butadiene
ii)2-methyl-1,3-butadiene
iii)Isobutene
iv)Isobutene and isoprene
22.Conducting polymers can be obtained from the following reaction
i)Doping
ii)Chlorination
iii)Polymerisation
iv)Bromination
23.The most suitable oxidizing agent for oxidative doping of polyacetylene is
i)Acidified potassium dichromate
ii)Iodine vapours
iii)Iodine in carbon tetrachloride
iv)Sodium naphthalide in THF
24.The most suitable reducing agent for reductive doping of polyacetylene is
i)Acidified potassium dichromate
ii)Iodine vapours
iii)Iodine in carbon tetrachloride
iv)Sodium naphthalide in THF
25. Oxidative doping of polymers is
i)p-doping
ii)n-doping
iii)Both i) and ii)
iv)None of tha above
26.Following polymer is an organic metal
i)Conducting polyacetylene
ii)Conducting polyaniline
iii)Conducting polythiophene
iv)All the conducting polymers
27.Which of the following polymers is used in smart windows
i)Conducting polyacetylene
ii)Conducting polyaniline
iii)Conducting polythiophene
iv)All the conducting polymers
28.Commercial name of epoxy resin is
i)Epon & Araldite
ii)Teflon
iii)Plexi glass
iv)Novolac
29.Epoxy resin is prepared by the polymerization of
i)Bisphenol A
ii)Epichlorohydrin
iii)Bisphenol A and epichlorohydrin
iv)Phenol and formaldehyde
30.Which of the following polymers has higher Tg value
i)Teflon
ii)Polyethylene
iii)PVC
iv)Nylon66
31.The polymers used in telecommunication system, air crafts wiring, solar cells is
i)Conducting polymers
ii)Synthetic rubbers
iii)Epoxy resins
iv)All the polymers
32.Polymers containing polar groups dissolve in or readily attacked by
i)Non polar solvents
ii)Polar solvents
iii)All the organic solvents
iv)Water
33.Polymers containing non polar groups dissolve in/readily attacked by
i) Non polar solvents
ii)Polar solvents
iii)All the organic solvents
iv)Water
34.Starch is a polymer of
i)α –glucose
ii)β-glucose
iii)Fructose
iv)Galactose
35.Cellulose is a polymer of
i) α –glucose
ii) β-glucose
iii) Fructose
iv)Galactose
36.The process of adding plasticizers is called
i)Plasticization
ii)Polymerisation
iii)Condensation
iv)None of these
37.Proteins are natural polymers containing
i)α- amino acids
ii)β-amino acids
iii)Both i) and ii)
iv)None of the above
38.Bakelite is a thermosetting polymer because
i)It consists of 2 different monomer molecules
ii)Long linear chain
iii)The different chains of Bakelite are held together through strong covalent(Sigma) bonds
iv)Reason is not clear
39.Polymer used in the preparation of automobile tyres and tubes is
i)Buna-s
ii)Polysytrene
iii)Neoprene rubber
iv)Butyl rubber
40.Excellent substitute for glass is
i)PMMA (plxiglass/Lucite)
ii)Buna-s
iii)Teflon
iv)Polyurethane
41.Polymer used in artificial eye parts, airplane cockpit, signal light lens and Televisionscreens is
i)PMMA
ii)Buna-S
iii)Polycarbonate
iv)Polyurethane
42.Bullet proof polymer is
i)Polycarbonate
ii)P-F resin
iii)Polyurethane
iv)Conducting polymers
43.The polymer which is used for making non stick utensils is
i)Polyurethane
ii)Bakelite
iii)Teflon
iv)All the above
44.The function of sulphur in the vulcanization of rubber is
i)It decreases the elasticity
ii)More ductile
iii)Less plastic and non stick
iv)All the above
45.Addition polymerization reactions
i)Need initiators
ii)Acid catalysed reactions
iii)Base catalysed reactions
iv)Will initiate without initiators
46.Bisphenol A is manufactured by the reaction of
i)Phenol and acetone
ii)Phenol and aromatic aldehyde
iii)Phenol and formaldehyde
iv)Phenol and aniline
47.Collodion is
i)Cellulose nitrate
ii)Cellulose acetate
iii)Ethyl and methyl cellulose
iv)Cellulose
48.Celluloids are
i)Cellulose nitrate
ii)Cellulose acetate
iii)Ethyl and methyl cellulose
iv)Cellulose
49.When P/F is less than 1, the product formed is
i)Novolac
ii)Bakelite
iii)Mixture of Novolac and Bakelite
iv)None of the above
50.When P/F is greater than 1, the product formed is
i)Novolac
ii)Bakelite
iii)Mixture of Novolac and Bakelite
iv)None of the above
51.Arrange the following polymers in increasing order of their intermolecular forces: Nylon-66, Buna-S,
Plythene
i)Polythene < Buna-S < Nylon-66
ii)Polythene < Nylon-66 < Buna-S
iii)Nylon-66 < Buna-S < Poythene
iv)Buna-S < Polythene <Nylon-66
52.Tg value of which of the following polymers is very high: Polyethylene,Polypropylene, PVC, PTFE
i)PTFE
ii)PVC
iii)Polyethylene
iv)Polypropylene
53.Colloids are used in
i)Emulsion polymerization
ii)Bulk polymerization
iii)Suspension polymerization
iv)Solution polymerization
54.Surfactant/is used in
i)Emulsion polymerization
ii)Bulk polymerization
iii)Suspension polymerization
iv)Solution polymerization
55.Preparation of Novolac is an
i)Acid catalysed reaction
ii)Base catalysed reaction
iii)Dibenzoyl peroxide initiates the reaction
iv)Any of the above
56. Bakelite preparation is
i) Acid catalysed reaction
ii) Base catalysed reaction
iii) Dibenzoyl peroxide initiates the reaction
iv) Any of the above
57. Number of monomer molecules which take part in polymerization is
i) Degree of polymerization
ii) Molecular weight of polymer
iii) Tg of polymer
iv) None of the above
58. Tetra fluoro ethylene is the monomer of
i) Nylon66
ii) Neoprene
iii) Teflon
iv) PVC
59. Sulphur is used particularly in
i) Manufacture of buna-S
ii) Corrosion control
iii) Compounding of resin
iv) Vulcanisation of rubber
60. The monomer phenol is
i) monofunctional
ii) bifunctional
iii) trifunctional
iv) polyfunctional
61. The polymer used as electrodes in rechargeable batteries is
i) Conducting polyaniline
ii) Teflon
iii) Polyacetylene
iv) Polyaniline
62. Compounding of resins
i) Modifies the properties of polymer
ii) Imparts additional properties
iii) Helps in polymer processing
iv) All the above
63. The polymers used in aerospace components, telecommunication systems, conductivefabrics,
photovoltaic cells are
i) Teflon
ii) Conducting polymers
iii) Bakelite & Novolac
iv) None of the above
64. Which of the following polymer has ozone resistance
i) Butyl rubber
ii) Neoprene rubber
iii) Natural rubber
iv) both i and ii
65. which of the following polymer can hold organic solvents
i) Natural rubber
ii) butyl rubber
iii) polysulphide rubber
iv) all the above
66. Polymer used as corrosion control paint is
i) PMMA
ii) Bakelite
iii) Teflon
iv) all the above
67. Conducting polyaniline is prepared by the
i) Oxidative doping of polyanilne
ii) Reductive doping of polyanilne
iii) Protonic acid doping of polyaniline
iv) all the above
68. The commonly used reagent in protonic acid doping is
i) Sulphuric acid & Ammonium sulphate
ii) HCl and Ammonium sulphate
iii) Sodium naphthalide inTHF
iv) Iodine in CCl
Answer:
1)iii6) i11) iii16) iii2)i7) i12) i17) i3)ii8) I13) ii18) ii4)i9) ii14) i19) iii5)ii10) iii15) ii20) i21) ii22) i23) iii
24) iv25) i26) ii27) ii28) i29) iv30) i31) i32) ii33) i34) i35) i36) i37) i38) iii39) iv40) i41) i42) i43) iii44) i
v45) i46) i47) i48) ii49) i50) ii51) i52) i53) iii54) i55) i56) ii57) i 58) iv59) iv60) iii61) I62) iv63) ii64) iv
65) iii66) iii67) iii68) i