Engg.Chemistry Unit-3 Synthetic Organic Polymers MCQ's

Updated on 2019/03/21 10:07

Q.1.  The word polymer meant for material made from ....
A)    Single entity
B)    Two entities
C)    Multiple entities
D)    Any entity

Q.2.  Polymers are ... in nature.
A)    Organic
B)    Inorganic
C)    Both (a) and (b)
D)    None

Q.3.  Following is the unique property of polymeric materials.
A)    Elasticity
B)    Viscoelasticity
C)    Plasticity
D)    None 

Q. 4. Which one of the following is natural polymer?
A)    Polyisoprene
B)    Nylon - 6
C)    Neoprene
D)    SBR 

Q.5.  Which of the following is homopolymer?
A)    SBR
B)    LDPE
C)    Epoxy resin
D)    Buna-S 

Q.    6. Which type of polymer is Nylon-6?
A) Polyester
B) Polyamide
C) Polyether
D) none of these

Q.    7. Which of the following statements are correct for Linear polymer?
A) Linear polymers may be condensation as well as addition polymers
B) Structure is well packed in nature
C) Linear polymers have higher density, higher m.p. and higher tensile strength.
D) All are correct 

Q.    8.  Which of the following cannot be monomer?
A)    Propanol
B)    Ethylene diamine
C)    Adipic acid
D)    Ethylene glycol 

Q.    9. Which is not true about polymer?
A) Polymers do not carry any charge
B) Polymers have high viscosity
C) Polymers scatter light
D) Polymers have low molecular weight  

Q.    10. Polymer attains...state below Tg and..state above Tg.
A) Viscoelastic; Glassy
B) Viscofluid; Glassy
C) Glassy; Viscoelastic
D) Semi liquid; Viscofluid  

Q.    11. Polymer exists in....state between Tg and Tf value.
A) Viscoelastic
B) Viscofluid
C) Glassy
D) Semi liquid

Q.    12. Due to addition of plasticizers, Tg value of polymer....
A) increases
B) decreases
C) fluctuates
D) remain unaffected  

Q.    13. Polymer attains...state above Tm value.
A)    Viscoelastic
B)    Viscofluid
C)    Glassy
D)    Semi liquid 

Q.    14. Increasing cross linking of polymer Tg value....
A) increases
B) decreases
C) fluctuates
D) remain unaffected  

Q.    15. Glass transition temperature of polymer ...with increase in molecular weight.
A) increases
B) decreases
C) fluctuates
D) remain unaffected  

Q.    16. In order to form Polymer, monomers must be at least..
A) monofunctional
B) bifunctional  
C) trifunctional
D) polyfunctional  

Q.    17. Polymer crystallinity can be measured by ...
A)    potentiometer  
B)    CRO  
C)    X-ray diffraction  
D)    Electrodialysis 

Q.    18. The relation between Tg and Tm for symmetrical polymers is...
A) Tg = 3/2 Tm
B) Tg = 2/3 Tm
C) Tg = 1/2 Tm
D) Tm= 1/2 Tg  

Q.    19. Knowledge of Tg value is important because..
A)    It gives idea about working temperature range of particular polymer  
B)    It gives idea of choosing right temperature for polymer  
C)    It is a measure of flexibility of polymer  
D)    None of the above 

Q. 20.  An example of trifunctional monomer is
A)    Styrene  
B)    Glycerol  
C)    Ethylene glycol  
D)    1, 4-dimethyl Benzene 

Q. 20.  An example of trifunctional monomer is
A)    Styrene  
B)    Glycerol  
C)    Ethylene glycol  
D)    1, 4-dimethyl Benzene 

Q.21.  An example of tetra functional monomer is
A)    Ethyl benzene  
B)    Glycerol  
C)    Urea  
D)    1, 4-dimethyl Benzene 

Q. 22.  Factors affecting crystallinity of a polymer are...
A)    intermolecular forces  
B)    Bulky side groups  
C)    Rate of cooling during crystallization
D)All of the above 

Q.23.  Highly crystalline polymers will have
A)    Low density  
B)    High Tg value  
C)    Low softening temperature  
D)    All of the above 

Q.24. Polystyrene has more Tg value than Polyethylene due to
A)    presence of double bond  
B)    absence of functional group  
C)    presence of bulky side group  
D)    absence of polarity 

Q.25. ....is Vinylic  monomer and ....is functional group monomer.
A)    Glycol and Ethylene diamine  
B)    Vinyl chloride and Styrene  
C)    Propylene and Adipic acid  
D)    Benzene and Terephthalic acid 

Q.26.  A high molecular weight material that can be easily moulded into desired shape is..
A)    graphite  
B)    plastic  
C)    glass  
D)    metal 

Q.27. Degree of polymerization is,
A)    Total number of monomer molecules joined in polymer molecule  
B)    Minimum number of monomer molecules joined in polymer molecule  
C)    Maximum number of monomer molecules joined in polymer molecule  
D)    Average number of monomer molecules joined in polymer molecule 

Q.28. As the polymer molecule in a polymeric chain differs in its length and sizes, the molecular weight of a polymer is always....
A)    approximation  
B)    average  
C)    sharp value  
D)    all of these 

Q. 29......Can be measured by Colligative property and....is by light scattering method.
A) Mn ̅̅̅̅ ; Mv ̅̅̅̅
B) Mw̅̅̅̅̅ ; Mn ̅̅̅̅
C) Mw̅̅̅̅̅ ; Mv ̅̅̅̅
D) Mn ̅̅̅̅ ; Mw̅̅̅̅̅

Q.30. The weight average molecular weight of a polymer is determined by...
A)    light scattering
B)    ultracentrifugation method
C)    both A and B
D)    none of these 

Q.31. Identify the correct statement
A)    Polymer above Tg is rigid and below Tg is brittle
B)    Polymer above Tg is flexible and below Tg is brittle
C)    Polymer above Tm is rigid  and below Tg is brittle
D)    Polymer above Tg is rigid and above Tm is viscous 

Q.32. General relation of Tg and Tm for Vinylic polymers is, approximately
A)Tg = 3/2 Tm
B)Tg = 2/3 Tm
C)Tg = 1/2 Tm
D)Tm = 1/2 Tg  

Q.    33. The denser packing of polymer chains is observed when the polymer is..
A)Partially crystalline
B) Amorphous
C) Highly crystalline
D) Independent of its crystallinity  

Q.34.The extent to which polymer molecules are arranged in an ordered fashion is called..
A) Functionality
B) Crystallinity
C) Polymerizability
D) None of these  

Q.35. Branched polymers are..
A)    amorphous in nature
B)    having regular arrangement of polymer molecules
C)    crystalline in nature
D)    mechanically strong 


  

Q.36. In propagation step the reaction intermediate of radical polymerization is
A)    Carbanion
B)    Carbocation
C)    Carbene
D)    free radical

Q.    37. Which monomer will undergo radical polymerization most readily?
A) Ethylene
B) Styrene
C) Propene
D) 2-methyl 1-propene

Q.    38. Which of the following monomers can undergo radical, cationic as well as anionic polymerization with equal ease?
A)    Acrylonitrile
B)    iso-butylene
C)    Styrene
D)    Ethylne 

Q.39.  Free radical polymerization can be initiated by
A)    Hydrogen peroxide
B)    Benzoyl peroxide
C)    Azo bis-isobutyronitrile
D)    all of these 

Q.40. Out of following polymers which one is addition copolymer?
A) Neoprene
B) Buna-S
C) Nylon 6,6
D) PVC

Q.41. By which polymerization technique almost 100% pure polymer is obtained?
A) Solution  
B)    Emulsion
C)    Suspension
D)    Bulk 

Q.42. Which polymerization technique is used exclusively for preparation of block copolymers?
A)    Solution
B)    Emulsion
C)    Suspension
D)    Bulk 

Q.43. In which technique, monomer is uniformly dispersed in aqueous phase but not in the form of discrete droplets?
A)    Solution
B)    Emulsion
C)    Suspension
D)    Bulk 


  

Q.44. Micelles of surfactants shows ..nature to inner side and ....end remain outward.
A) non polar - polar
B) polar - non polar
C) non polar - non polar
D) polar - polar 

Q.45.  Micelles are related to which technique of polymerizations?
A)    Solution
B)    Emulsion
C)    Suspension
D)    Bulk 

Q. 46. Styrene divinyl benzene copolymer resin is prepared by ÖÖ..technique of polymerization.
A)    Solution
B)    Emulsion
C)    Suspension
D)    Bulk

Q.47. Which polymerization technique is also known as bead or pearl polymerization technique?
A)    Solution
B)    Emulsion
C)    Suspension
D)    Bulk 

Q.48. Expandable polystyrene beads are polymerized by which polymerization technique?
A) Solution
B) Emulsion
C) Suspension
D) Bulk 

Q.49. Bis-Phenol A and Epichlorohydrin are the monomers of ..
A)    PF resin
B)    Epoxy resin
C)    Melamine formaldehyde resin
D)    Buna -S 

Q. 50. Which of the following polymers are condensation polymers?
A)    Bakelite
B)    Teflon
C)    ABS
D)    PS 

Q.51.  Choose the reaction that occurs as addition copolymerization.
A)    n (Vinyl chlorid ?PVC
B)    n (HMDA) + n (Adipic acid) ?Nylon
C)    n (Butadien + n (Styren ? SBR
D)    n (3-hydroxy butyric acid) + n (3-hydroxy valeric acid) ? HBHV 

Q. 52.  Choose the reaction that occurs as condensation polymerization.
A)    n (Vinyl chlorid ?PVC
B)    n (HMDA) + n (Adipic acid) ?Nylon
C)    n (Butadien + n (Styren ? SBR
D)    n (Propylen ? Polypropylene

Q.53.  Match the following:    

  1.    Bulk polymerization        P. Tiny bulk reactor
    2.    Solution polymerization      Q. Surfactant
    3.    Emulsion polymerization      R. Task of solvent removal
    4.    Suspension polymerization    S. Pure polymer

A)    1-R, 2-P, 3-S, 4-Q
B)    1-S, 2-R, 3-Q, 4-P
C)    1-P, 2-Q, 3-R, 4-S
D)    1-Q, 2-S, 3-P, 4-R 

Q. 54.  Match the following:    

  1.    Functionality of monomer    P.  Step growth polymerization
    2.    Condensation polymerization    Q.  One saturated and other unsaturated polymer
    3.    Coupling    R.  Number of reactive sites in the monomer
    4.    Disproportination    S. Two growing polymers form a macromolecule

A)    1-R, 2-P, 3-S, 4-Q
B)    1-S, 2-Q, 3-P, 4-R
C)    1-P, 2-Q, 3-R, 4-S
D)    1-R, 2-S, 3-P, 4-Q 

Q.55.  Which of the following is not a free-radical catalyst?
A)    Diazobenzene
B)    H2O2
C)    Benzene
D)    Benzoyl peroxide 

Q.56. The free radical initiator for a chain reaction is formed by...
A)    Homolytic fission
B)    Chain transfer
C)    Disproportion
D)    Termination

Q.57.  .... is a catalyst for free radical polymerization mechanism.
A)    HCl
B)    H2O2
C)    BF3
D)    Zeigler-Natta 

Q.58.  Addition reaction of polymerization is...
A)    Exothermic
B)    Slow
C)    Endothermic
D)    Noncatalytic 

Q.59. Initiator used in addition polymerization is...
A)    Benzoyl peroxide
B)    Hydrogen peroxide
C)    Acetyl peroxide
D)    All of these 

Q.60.  Free radical addition polymerization is terminated by
A)    coupling
B)    disproportionation
C)    chain transfer
D)    all of these 

Q.61.  Feature of addition polymerization is
A)    monomer contains single bond
B)    initiator is required to start polymerization reaction
C)    reactions is endothermic
D)    by products are formed 

Q.62.  A polymer with 'Live' ends on both side is,
A)    Polypropylene
B)    Polystyrene
C)    PVC
D)    Polycarbonate

Q.63. Which of the following is not true for chain growth polymerization...
A)    Molecular weight of polymer is integral multiple of monomer
B)    Polymer chains are not active after termination
C)    Average molecular weight increases with reaction time
D)    It is endothermic reaction 

Q.    64. Order of ease of heat and mass transfer for technique of polymerization with the progress is..
A) Bulk > Suspension > Solution
B) Suspension > Bulk > Solution
C) Solution > Bulk > Suspension
D) Solution > Suspension > Bulk 

Q.    65.  For suspension polymerization initiator should be
A)    Water soluble
B)    Monomer soluble
C)    Soluble in both water and monomer
D)    Insoluble in water and monomer 

Q.66.  Initiator used in emulsion polymerization should be..
A)    Soluble in monomer
B)    Soluble in water
C)    Soluble in monomer-solvent mixture
D)    None of these 

Q.67.  By solution polymerization technique the polymer obtained is in the form of..
A)    Beads
B)    Latex
C)    Adhesive
D)    None of these

Q.68.  The technique of polymerization that uses surfactants to its critical concentration is..
A)    Bulk
B)    Solution
C)    Suspension
D)    Emulsion 

Q.69.  These polymers cannot be recycled
A)    Thermoplasts
B)    Thermosets
C)    Elastomers
D)    All polymers 

Q.70.  In general, strongest polymer group is _______
A)    Thermoplasts
B)    Thermosets
C)    Elastomers
D)    All polymers 

Q.71.  Strong covalent bonds exists between polymer chains in ______
A)    Thermoplasts
B)    Thermosets
C)    Elastomers
D)    All polymers 

Q. 72.  Which type of polymer the Melamine Formaldehyde is?
A)    Thermoplastic
B)    Thermosetting
C)    both a and b
D)    none of these 

Q. 73.  Monomers of PF resin are
A)    Phenol and methanol
B)    Phenol and Methanal
C)    Phenol and Ethylene glycol
D)    Both b and c 

Q.    74. In which polymer strength of intermolecular forces is highest?
A) Elastomer
B) Thermoplastic
C) Fibre
D) Cross-linked polymer

Q.    75. Out of following polymers, which is not Thermosoftening polymer?
A) PE
B) PVC
C) Nylon
D) Urea formaldehyde resin  

Q.    76.  Out of following polymers, which is thermosetting polymer?
A)    PE
B)    PVC
C)    Nylon
D)    PF resin 

Q.77.  Which polymer can be recycled?
A)    Thermosetting
B)    Thermo softening
C)    Cross linked
D)    None of these 

Q.78.  Bakelite is a product of reaction between... and ...
A)    Phenol; Formaldehyde
B)    Formaldehyde; NaOH
C)    Aniline; Formaldehyde
D)    Urea ; Formaldehyde 

Q.79.  Which is an example of thermosetting polymer?
A)    Polyethylene
B)    Neoprene
C)    Bakelite
D)    Isoprene 

Q. 80.  Which of the following are characteristics of thermosetting polymers?

i. Heavily branched cross linked polymers
ii. Linear slightly branched long chain molecules
iii. Become infusible on moulding so cannot be reused iv. Soften on heating and harden on cooling, can be reused.

A)    i and iii
B)    ii and iv
C)    only i
D)    i, ii and iii 

Q.81.  Match the following:    

  1.    Thermoplastic polymer      P.  Barium Sulphate
    2.    Cross-linked polymers      Q.  Polystyrene
    3.    Fillers      R.  Urea formaldehyde
    4.    Thermosetting polymer      S.  Increased Tg

A)    1-R, 2-P, 3-S, 4-Q
B)    1-S, 2-Q, 3-P, 4-R
C)    1-P, 2-Q, 3-R, 4-S
D)    1-Q, 2-S, 3-P, 4-R 

Q.82.  Which of the following is linear polymer?
A)    LDPE
B)    HDPE
C)    PF resin
D)    none 

Q.83.  Zeigler-Natta Catalyst is...
A)    triethyl aluminium
B)    titanium tetrachloride
C)    triethyl aluminium & titanium tetrachloride
D)    triethyl borane and titanium dichloride 

Q.84.  The Structure of HDPE is......
A)    Linear
B)    Highly Branch-chain
C)    Cross-linked
D)    Any one of these

Q.85.  Which of the following is strong adhesive?
A)    Epoxy resin
B)    Melamine formaldehyde resin
C)    Bakelite
D)    PVC 

Q.86.  Bis-Phenol A and Epichlorohydrin are the monomers of ....
A)    PF resin
B)    Epoxy resin
C)    Melamine formaldehyde resin
D)    Buna -S 

Q. 87. The structural formula of HDPE is
A)    - (CH=CH)n-
B)    - (CH2 =CH2)n
C)    - (CH-CHCl)n-
D)    - (CH2-CH2)n- 

Q.88.  Zeigler-Natta catalyst required for preparation of ...
A)    LDPE
B)    HDPE
C)    PVC
D)    Epoxy resin 

Q.89.  For paper coating....is used.
A)    LDPE
B)    HDPE
C)    SBR
D)    All of these 

Q.90.  Araldite is composed of Öpolymer.
A)      PS
B)    PPF
C)    Epoxy Resin
D)    Buna ñS 

Q.91.  Out of following, which one used as curing agent for Epoxy resin?
A)    Diols
B)    Diacids
C)    Diamines
D)    None of these 

Q.92.  The Low density polyethylene synthesis reaction can be given as:
A)  nCH 2 = CH2    --------H2O2 / 4.5 X 105 Pa, 50-700C-------    >    -(CH2-CH2)n-
B)  nCH 2 = CH2 -------    H2O2 / 1.5 X 108 Pa, 180-2500C-----    >    -(CH2-CH2)n-
C)  nCH 2    = CH2 -- -----    Zeigler -Natta / 4.5 X 103 Pa, 50-700C-------        >  -(CH2-CH2)n-
D)  nCH 2 = CH2 -- -----    Zeigler -Natta / 4.5 X 102 Pa, 50-4000C-------    >  -(CH2-CH2)n-

Q. 93. The High density polyethylene synthesis reaction can be given as:
A)  nCH 2 = CH2 --------    H2O2 / 4.5 X 105 Pa, 50-700C-------    >    -(CH2-CH2)n-
B)  nCH 2    = CH2 -------    H2O2 / 1.5 X 108 Pa, 180-2500C-----    >    -(CH2-CH2)n-
C)  nCH 2    = CH2 -- -----    Zeigler -Natta / 4.5 X 105 Pa, 50-700C-------        >  -(CH2-CH2)n-
D)  nCH 2 = CH2 -- -----    Zeigler -Natta / 180-2500C-------    >  -(CH2-CH2)n-

Q. 94.  An epoxy resin is...
A)    Polyester
B)    Polyamide
C)    Polyether
D)    Polycarbonate 

Q.95.  In the synthesis of epoxy resin, the catalyst used is....
A)    AlCl3
B)    NaOH
C)    HCl
D)    H2O2 

Q. 96.  A thermoplastic is formed generally by,
A)    condensation polymerization
B)    Nitration
C)    Addition polymerization
D)    Cross linking of chains of polymers 

Q.97.  A plastic which softens on heating and hardens on cooling reversibly is known as
A)    Thermo elastic
B)    Thermoplastic
C)    Thermosetting
D)    Thermo stable 

Q.98.  Ethylene polymerization using free radical catalyst results in
A)    LDPE
B)    HDPE
C)    Epoxy Resin
D)    All of these 

Q.99. Crystallinity of LDPE and HDPE are ...& ... respectively.
A) 40%; 50%
B) 40%: 90%
C) 90%; 40%
D) 50%; 40%  

Q.100. Epoxy resin is an example of..
A)    Thermosoftening resin
B)    Thermosetting resin
C)    Elastomer
D)    Fibre 

Q.101. The density and crystallinity of LDPE is... gm/cm3  and.. %respectively
A)    0.94; 40
B)    0.91; 90
C)    0.95; 70
D)    0.91; 40 

Q.102.  Which one of the following is natural polymer?
A)    Polyisoprene
B)    Nylon - 6
C)    Neoprene
D)    SBR 

Q.103. Which type of polymer the Vulcanized rubber  is?
A)    Linear
B)    Cross-linked
C)    Branch-chain
D)    none of these 

Q.104. Which one of the following compound is monomer of Natural rubber?
A)    1, 3 - Butadiene
B)    2- methyl 1-Butene
C)    2-methyl 1,3-butadiene
D)    2-Chloro 1, 3-butadiene 

Q.105.  Which one of the following contains Isoprene units?
A)    Natural rubber
B)    Nylon - 6,6
C)    PE
D)    Neoprene rubber 

Q. 106. Who has discovered Vulcanization process of rubber?
A)    Christopher Columbus
B)    Du Pond
C)    Pristley
D)    Thomas Hancock and Charles Goodyear 

Q.107.  Natural Rubber is ....type of polymer.
A) polyamide
B)    polyester
C)    polyether
D)    polyene 

Q.108.  Out of following which can be used as vulcanizing agent?
A)    Zeigler- Natta catalyst
B)    Sulphuryl chloride
C)    Sulphur
D)    Both b and c 

Q.109. In vulcanization of rubber..
A)    sulphur reacts to form new compound
B)    sulphur crosslinks are introduced
C)    sulphur forms very thin protective layer on rubber
D)    None of these 

Q.110.  Natural rubber is a polymer of...
A)    Trans- isoprene
B)    Cis- isoprene
C)    Cis-trans isoprene
D)    Cis-chloroprene 

Q.111. Which one of the following statements is not true?
A)    Natural rubber has the Trans configuration at every double bond
B)    Buna-S is a copolymer of butadiene and styrene
C)    Natural rubber is a 1, 4-polymer of isoprene
D)    In vulcanization, the sulphur crosslinks makes rubber harder and stronger. 

Q.112. The monomers of Buna-S rubber are..
A)    styrene and butadiene
B)    isoprene and butadiene
C)    vinyl chloride and sulphur
D)    butadiene and ethylene 

Q.113.  GR-S is a common name of which polymer?
A)    Neoprene rubber
B)    Silicone rubber
C)    Natural rubber
D)    SBR 

Q.114.  Which of the following are examples of synthetic rubber?
A)    Polychloroprene
B)    Polyisoprene
C)    SBR
D)    both a and c 

Q.115.  Which of the following polymer is not elastomer?
A)    Buna-S
B)    Neoprene
C)    LDPE
D)    Polyisoprene 

Q.116.  Vulcanization makes rubber ....
A)    more elastic
B)    soluble in inorganic solvent
C)    with more tackiness
D)    more stiff and hard 

Q. 117.  Match the following:    

  1. Neoprene rubber  P. Swells in organic solvent
    2.    Raw rubber  Q. Buna -S
    3.    Synthetic rubber  R. Vulcanizing agent
    4.    Sulphuryl chloride S. Oil action resistant rubber

A)    1-R, 2-P, 3-S, 4-Q
B)    1-S, 2-P, 3-Q, 4-R
C)    1-P, 2-Q, 3-R, 4-S
D)    1-Q, 2-S, 3-P, 4-R 

Q.118. Choose the correct option giving the properties of SBR 

  1.    Readily oxidized by oxygen in atmosphere
    2.    High resilience, resistance to heat
    3.    High abrasion resistance
    4.    Swells in water and polar solvents
    5.    High load bearing capacity
    6.    Cannot be vulcanized 

A)1,2,4
B)2,3,5
C)3,4,6
D)1,4,5

Q.119.  Choose the correct option giving the applications of SBR

  1.    Manufacture of vehicle tyres
    2.    Used in making of floor tiles, shoe soles, gaskets, tank linings
    3.    Impregnated on fabric for crease resistant and shrinkage control
    4.    Used in making conveyor belts
    5.    Used to manufacture panels and wings for fighter jets
    6.    Used as an adhesive 

A)1,2,4
B)2,3,5
C)3,4,6
D)1,4,5

Q.120.  Choose the correct option giving the drawbacks of raw rubber

  1.    Low plasticity
    2.    Tensile strength is only 20 Kg/cm2
    3.    Large water absorption capacity
    4.    Soluble in non-polar solvents like oils, benzene, CCl4
    5.    Attacked by reducing agents like chromic acid, sodium hypochlorite
    6.    High tackiness 

A)2,3,4
B)1,3,4
C)3,5,6
D)3,4,6

Q.122. Mastication of natural rubber involves  .
A)    Cross linking of chains
B)    Coiling of chains  
C)    Reducing the molecular weights of chains
D)    Raising of molecular weights of chains 

Q. 123. Natural rubber is obtained from the tree named .
A)    Hevea brazilensis
B)    Mangifera Indica
C)    Hevea crailensis
D)    None of these 

Q.124. During vulcanization of rubber by use of S2Cl2 the cross links introduced are..
A)    -S-S-
B)    -C-C-
C)    -C-O-
D)    -O-O- 

Q.125. The weight percentage of styrene in SBR is .
A)    25%
B)    50%
C)    75%
D)    None of these 

Q.126.  The weight percentage of Butadiene in SBR is .
A)    25%
B)    50%
C)    75%
D)    None of these 

Q.127. Tackiness of rubber is  .
A)    Its ability to absorb water
B)    Its ability to stick together
C)    Its ability to stretch
D)    Its ability to undergo slippage 

Q.128.  Tensile strength of vulcanized rubber is about
A) 2000 Kg/cm2
B) 200 Kg/cm2
C) 20 Kg/cm2
D) 2 Kg/cm2 

Q.129. The two C=C bond in cis-isoprene at 1,2 and 3,4 positions undergo change after polymerization into natural rubber, can be expressed as
A)    both double bonds used for polymerization
B)    Double bond at 1,2 position used and other double bond remains unchanged
C)    Double bond at 3,4 position used and other double bond remains unchanged
D)    Due to delocalization of p electrons new double bond created at 2,3 position. 

Q.130. Rubber is kept in smokehouse for 3 days at 500C to..
A) increase tensile strength
B) increase impact resistance
C) increase resilience
D) increase resistance to attack by microorganisms.  

Q.131. Select the property of natural rubber from the following :
A) Working temperature range is 10-600C
B) High water absorption capacity
C) Low chemical resistance
D) All of these 

Q.132. Select the property of vulcanized rubber from the following:
A) Working temperature range is -40 to 1000C
B) Low water absorption capacity
C) High chemical resistance
D) All of these 

Q.133. Vulcanization of natural rubber is carried out with Sulphur at temperature range of
A)      50 to 700C
B)    70 to 1000C
C)    110 to 1300C
D)    150 to 1700C

Q.134. Process of vulcanization of natural rubber makes it,
A)    more tacky
B)    softer
C)    stronger
D)    more elastic 

Q.135. The fact that vulcanized natural rubber has better ageing resistance; is due to,
A)    Number of C=C increases on vulcanization
B)    Presence of S atoms in vulcanized rubber
C)    Number of C=C decreases on vulcanization
D)    Vulcanization is a physical process 

Q.136. Styrene is copolymerized with butadiene to form
A)    SBR
B)    Butyl rubber
C)    Neoprene rubber
D)    Vulcanized rubber 

Q.137. SBR used for...
A)    making of crates, tubes, troughs, water tanks, pipes, drums, etc
B)    packaging, laminations, flexible pipes, insulation of wires
C)    making adhesive like araldite
D)    making of vehicle tyres, floor tiles, shoe soles 

Q.138.  Choose the correct reaction showing polymerization of isoprene:
A)
B)
C)
D)

Q. 139. Structure of Polyisoprene polymer can be written as:
A)
B)
C)
D)

Q.140.  Kevlar is commercial name for _______.
A)    Glass fibers
B)    Carbon fibers
C)    Aramid fibers
D)    Cermets 

Q.141. Which of the following is not  biodegradable?
A)    Protein
B)    Nucleic acid
C)    PVC
D)    Cellulose 

Q.142. Which polymer is also known as 'Synthetic Metals'.
A)    Kevlar
B)    PE
C)    Polycarbonate
D)    Polyacetylene 

Q.143. Polyacetylene is used in ...
A)    insulating material
B)    biodegradable articles
C)    printed circuit boards
D)    all of these 

Q.144. Out of following polymers which one is used as electroluminescent polymer?
A)    Polystyrene
B)    Polyacetylene
C)    SBR
D)    Polyphenylene vinylene 

Q.145. Out of following which one acts as LCP?
A)    Polyacetylene
B)    Polyphenylene vinylene
C)    Kevlar
D)    Polycarbonate 

Q. 146.  Monomers....and... form biodegradable polymer-HBHV.
A)    3-hydroxybutanoic acid ; 3-hydroxypentanoic acid
B)    Ethylene glycol ; HMDA
C)    Ethylene glycol ; Phthaleic acid
D)    Caprolactum; Ethylene glycol 

Q.147.  Polycarbonates are..
A)    Polyamides
B)    Polyethers
C)    Polyenes
D)    Polyesters 

Q.148.  BIOPOL is common name of ... polymer.
A)    PPF
B)    PHBV
C)    PPV
D)    Both of A & B 

Q. 149.  n- doping and p-doping of conducting polymer is done by.. &.. respectively.
A)    I2 & FeCl3
B)    I2 & Li
C)    FeCl3 & I2
D)    Na & I2 

Q.150. Polyacetylene in undoped state acts as...
A)    good conducting polymer
B)    insulator
C)    semiconductor
D)    none of these

Q.151. Out of following which one acts as plasticizer?
A)    Phenol
B)    Tricresyl phosphate
C)    Phthalate esters
D)    Both b and c 

Q.152.  In OLED of polyphenylene vinylene ..acts as anode and ..acts as cathode.
A)    Calcium; Indium tin oxide
B)    Magnesium; Indium tin oxide
C)    Aluminium; Calcium
D)    Indium tin oxide; Calcium 

Q.153.  Trans-polyacetylene has ...conductivity than its cis isomer.
A)    higher
B)    less
C)    equal
D)    very less 

Q.154.  Lexan is nothing but...
A)    PPV
B)    Polyisoprene
C)    Kevlar
D)    Polycarbonate 

Q.155.  CDs and DVDs can be made by using..
A)    Polycarbonate
B)    PPV
C)    PHBV
D)    Kevlar 

Q.156.  Kevlar is...type of liquid crystal.
A) Smectic
B) Cholesteric
C) Thermotropic
D) Lyotropic 

Q.157. Which of the following is not true for PPV?
A)    It is diamagnetic material
B)    It shows yellow-green fluorescence
C)    Its conductivity increases on doping
D)    It is water soluble 

Q.158.  Electroluminescence of PPV is due to....
A)    Conjugated pi bond system
B)    Doping
C)    Combination of holes and electrons
D)    None of these 

Q. 159. Which of the following application does not belong to PHBV (HB-HV- Copolymer)?
A)    Structural material
B)    Drug delivery
C)    Internal suture
D)    Packing 

Q.160.  Match the following:    

  1.    Functionality of monomer P.  Ordinary arithmetic mean
    2.    Number average MW  Q.  Kevlar
    3.    Conducting polymer R.  Number of reactive sites in the monomer
    4.    Lyotropic LCP  S. Polyacetylene

A)    1-R, 2-P, 3-S, 4-Q
B)    1-S, 2-Q, 3-P, 4-R
C)    1-P, 2-Q, 3-R, 4-S
D)    1-R, 2-S, 3-P, 4-Q 

Q.161. Match the following:    

  1.    Carborandum  P. Heat stabilizer
    2.    Sodium stearate  Q. Soaps
    3.    Camphor   R. Plasticizer
    4.    Vinylidene chloride S. Extra hardness

A)    1-R, 2-P, 3-S, 4-Q
B)    1-S, 2-Q, 3-R, 4-P
C)    1-P, 2-Q, 3-R, 4-S
D)    1-Q, 2-S, 3-P, 4-R 

Q. 162. Structure of PHBV is:
A)    ñ[O-CH(CH3)-CH2-CO]x-[O- CH(C2H5)-CH2-COO]y-
B)    ñ[O-CH(C2H5)-CH2-CO]x-[O- CH(C2H5)-CH2-COO]y-
C)    ñ[O-CH(CH3)-CH2-COO]x-[O- CH(C2H5)-CH2-COO]y-
D)    ñ[O-CH(CH3)-CH2-CO]x-[O- CH(C2H5)-CH2-CO]y- 

Q. 163. The plasticizers added during compounding of plastics can be
A)    Vegetable oils
B)    Phthalate form of esters
C)    Tricresyl phosphate
D)    All of these 

Q.164. The plasticizers added during compounding of plastics can be .
A)    Vegetable oils
B)    Saw dust
C)    Zinc oxide
D)    All of these 

Q.165. The Fillers added during compounding of plastics can be .
A)    Vegetable oils
B)    Saw dust
C)    Zinc oxide
D)    All of these 

Q.166. The accelerator added during compounding of plastics can be.
A)    Vegetable oils
B)    Saw dust
C)    Zinc oxide
D)    All of these

Q.167. The lubricant added during compounding of plastics can be.
A)    Vegetable oils
B)    Saw dust
C)    Zinc oxide
D)    All of these 

Q.168. The mica added as a filler during compounding of plastics also imparts .
A)    Extra hardness to the plastic
B)    Heat, flame resistance to the plastic
C)    Heat, flame and corrosion resistance to the plastic
D)    All of these 

Q.169. Synthetic polymer can be biodegraded by blending with polymer like .
A)    Starch
B)    Polycarbonate
C)    Polyethylene
D)    Adipic acid 

Q.170. Biopol is the commercial name of .
A)    Polyhydroxybutyrate
B)    Polyhydroxyvalarate
C)    Polyhydroxybutyrate-hydroxyvalarate
D)    Hydroxybutyrate-hydroxyvalarate 

Q.171. Electroluminescent polymers .
A)    Emit light in response to the passage of an electric current
B)    Emit light in response to the passage of an magnetic field
C)    Absorb light in response to the passage of an electric current
D)    Emit light in response to the passage of an heat 

Q.172. First reported electroluminescent polymer is
A)    Polyamide
B)    Poly-phenylene-vinylene polymer
C)    Polyacetylene
D)    Poly vinyl chloride 

Q.173. In a polymer light emitting diode, for generation of light .
A)    Thin HBHV film is sandwiched between two electrodes
B)    Thin PPV film is placed in liquid
C)    Thin PPV film is sandwiched between two electrodes
D)    None of these 

Q.174. Composite materials are made up of two phases namely .
A)    Matrix and suspended phase
B)    Matrix and dispersed phase
C)    Matter and dispersed phase
D)    None of these 

Q.175. Materials that are used for reinforcement can be in the form of
A) Fibres
B)Powders
C)Sheets
D)All of these  

Q.176. In a polymer composite the resin and the reinforcing material are held together by
A)Strong bonding at the interface
B)Strong bonding at the surface
C)strong bonding at the interior of a face
D)None of these

Q.177. It is desirable that biodegradable polymer should be...
A)Conducting
B)Hydrophilic
C)Epoxy resin
D)Heterotrophic

Q.178. Clay and BaSO4 can be used in compounding of plastic as...
A) accelerators
B)stabilizers
C)lubricants
D)fillers  

Q.179. CDs, and DVDs can be made from...
A)    Polycarbonates
B)    Polypropylene
C)    PHBV
D)    Kevlar 

Q.180. Polycarbonate is not used for...
A)    Ultra light sunglasses
B)    Substitute for window glasses
C)    Camera/ binocular bodies
D)    Surgical implants and sutures 

Q.181. Which of the following are correct applications for PHBV

1. High strength fibres
2. Antistatic coating
3. Drug delivery
4. Electrode material
5. Internal sutures
6. LED

A)    1 & 5
B)    3 & 5
C)    4 & 6
D)    2 & 5 

Q.182. Which of the following polymer is easily biodegradable?
A)    Vinylic polymer
B)    Highly crystalline polymer
C)    Hydrophilic polymer
D)    Hydrophobic polymer 

Q.183. The Biodegradable polymer is
A)    HBHV
B)    Cellulose
C)    PVC
D)    Both A and B 

Q. 184. Choose the correct option giving the applications of Biopol.

1. Useful for electric and electronic appliances
2. Useful for components of camera, projector housing
3. Useful for surgical sutures
4. Useful for packaging, lamination
5. Useful for making disposable bottles
6. Used for photodiodes

A)    1,2,5
B)    2,4,6
C)    3,4,5
D)    1,5,6 

Q. 185. Match the following:

1.    Trans-Polyacetylene    L. Synthetic rubber
2.    PPV    M. Semiconductor
3.    SBR    N. Electroluminescent
A)    1-L, 2-N, 3-M
B)    1-M, 2-N, 3-L
C)    1-N, 2-M, 3-L
D)    1-N, 2-L, 3-M 

Q.186. The polymer backbone that shows conductivity is
A)    -(CH2-CH2)n-
B)    -(CH2-COO)n-
C)    -(CH2-CH2-O)n-
D)    -(C6H4)n- 

Q. 187. The correct order for conductivity of polyacetylene is
A)    doped trans- PA > trans-PA = cis-PA
B)    doped trans- PA > trans-PA > cis-PA
C)    trans-PA > cis-PA > doped trans- PA  
D)    doped trans- PA = trans- PA > cis- PA 

Q.188. Polyacetylene is doped with Ö.to increase conductivity
A)    Germanium
B)    Silicon
C)    Iodine
D)    Benzene 

Q.189. On polymer backbone, P-doping creates
A)    Positive charge
B)    Negative charge
C)    Neutral state
D)    None of these 

Q.190.  An intrinsically conducting polymer has
A)    delocalized n electrons in the polymer backbone
B)    delocalized sigma electrons in the polymer backbone
C)    localized pi electrons in the polymer backbone
D)    delocalized pi electrons in the polymer backbone 

Q.191. N-doping of Polyacetylene is a reaction of the type
A)    oxidation
B)    reduction
C)    hydrolyis
D)    degradation 

Q.192. An example of n-dopant is
A)      Bromine
B)      FeCl3
C)    Iodine
D)    Sodium metal 

Q.193. Conductive polymers are used for
A)      Photodiodes
B)      Photovoltaic cell
C)      Electromagnetic screening materials
D)      All of these 

Q.194. Trans- Polyacetylene has conductivity...
A)    400S/cm
B)    1.7S/cm
C)    4.0 X 105 S/cm
D)    1.4 X 10-9 S/cm

Q.195. Cis- Polyacetylene has conductivity...
A)    400S/cm
B)    1.7S/cm
C)    4.0 X 105 S/cm
D)    1.4 X 10-9 S/cm

Q.196. The polymer, trans -Polyacetylene in its original form is...
A)Highly conducting
B)Semiconductor
C)Insulator
D)None of these  

Q. 197. Trans ñPA is an example of
A)Biodegradable polymer
B)Semiconducting polymer
C)Electroluminescent polymer
D)LCP

Q.198. Which is not doping agent for making PA conducting?
A)Iodine
B)Sodium Metal
C)HClO4
D)Fe

Q.199. Polyaniline is easily doped with..
A)Reducing agent
B)Acid
C)Oxidizing agent
D)Alkali

Q.200. p-doping of conducting polymer is done by...
A)Iodine
B)Sodium metal
C)Lithium metal
D)SnCl4

Q.201. Matrix phase of polymer composite is formed by
A)Fibres
B)Particulars
C)Polymer
D)Flakes

Q. 202. Match the polymer and applications

  1.    Kevlar P. Film based uses
    2.    SBR Q. Ropes, landline communication
    3.    LDPE R. Tyres of vehicles

A)    1-Q, 2-P, 3-R
B)    1-R, 2-Q, 3-P
C)    1-R, 2-P, 3-Q
D)    1-Q, 2-R, 3-P 

Q.202. In a polymer composite the resin and the reinforcing material are held together by
A)    strong bonding at the interface
B)    strong bonding at the surface
C)    strong bonding at the interior of a face
D)    None of these 

Q.203.The properties of fibre reinforced plastics are influenced by
A)    length of the fibres
B)    orientation of the fibres relative to one another
C)    concentration of the fibres in the matrix
D)    all of these 

Q.204. Polymer composites exhibit the properties
A)    of the matrix phase
B)    of dispersed phase
C)    other than the matrix and dispersed phases
D)    of both matrix and dispersed phases 

Q.205. The shredded cloth added as a filler during compounding of plastics also impart
A)    extra hardness to the plastic
B)    heat, flame, resistance to the plastic
C)    corrosion resistance to the plastic
D)    mechanical strength 

Q.206.  Which is not function of matrix phase of a FRP
A)    Binds dispersed phase
B)    Causes increase in strength of FRP
C)    Holds fibres with orientation
D)    Prevents propagation of cracks 

Q.207. Properties of fibre reinforced composite depend on...
A)    Nature of fibres
B)    Orientation of fibres
C)    Distribution of fibres
D)    All of these 

Q.208. The polymer which can exhibit liquid crystal property is...
A)    Epoxy resin
B)    Kevlar
C)    PVC
D)    PE 

Q. 210. ...is aromatic polymer and ...is aliphatic polymer.
A)    HDPE; Epoxy resin
B)    Kevlar; Natural rubber
C)    Kevlar; Epoxy resin
D)    LDPE; Kevlar 

Q.211.  The examples of LCP are
A)    Nomex and PE
B)    Kevlar and PS
C)    Nomex and PS
D)    Kevlar and Nomex 

Q.212.  In the structure of Kevlar, all the amide groups are separated by
A)    para-phenylene
B)    meta-phenylene
C)    ortho-phenylene
D)    none of these 

Q.213. The thermal stability of Kevlar is due to...
A)    amide group
B)    aramid ring structure
C)    long chain
D)    all of these 

Q.214.  Kevlar has very high strength due to
A)    intramolecular hydrogen bond between >CO group and >NH group
B)    intermolecular hydrogen bond between >CO group and >NH group
C)    intramolecular hydrogen bond between aromatic ring and >NH group
D)    intramolecular hydrogen bond between CO and aromatic ring 

Q.215. Kevlar is a ....
A)    smectic Lyotropic LCP
B)    nematic Lyotropic LCP
C)    smectic thermotropic LCP
D)    nematic thermotropic LCP 

Q.216.  The chemical composition of Kevlar is
A)    para poly phenylene terephthalene
B)    poly phenyl para terephthalamide
C)    poly para phenylene terephthalamide
D)    poly terephthalene para phenylene 

Q.217.The backbone chain of Kevlar polymer contains regular repetition of ....
A)    ester linkages
B)    ether linkages
C)    amide linkages
D)    anhydride linkages 

Q. 218.The fibre of highest tensile strength is
A)    Kevlar
B)    Polyester
C)    Nylon
D)    Acrylic fibre 

Q.219. Polypara phenylenevinylene is  ....polymer
A)    Biodegradable
B)    Conducting
C)    Electroluminescent
D)    Liquid crystal 

Q.220. Electroluminescent polymers.....
A)    emit light in response to the passage of an electric current
B)    emit light in response to the passage of a magnetic field
C)    absorb light in response to the passage of an electric current
D)    emit light in response to the passage of heat 

Q.221. In an electroluminescent polymer colour and wavelength of emitted light depend on
A)    energy gap between forbidden band and conduction band
B)    energy level between valence band and conduction band
C)    energy gap between valence band and conduction band
D)    energy gap above valence band and conduction band 

Q.222.  In a polymer light emitting diode for generation of light
A)    Thin HBPV film is sandwiched between two electrodes
B)    Thin PPV film is placed in a liquid
C)    Thin PPV film is sandwiched between two electrodes
D)    None of these 

Q.223. Polypara-phenylenevinylene shows....fluorescence
A)    Red
B)    Yellow-green
C)    Blue
D)    Orange 

Q.224. Electroluminescence is observed because of ...
A)       Conjugated p bonds in structure
B)       Doping of the polymer
C)    Recombination of holes and electrons
D)    all of these 

Q.226. In which of the following polymers is bisphenol-A is present as a monomer unit:

  1. Polycarbonate
    2. Polypara phenylenevinylene
    3. Epoxy resin
    4. Kevlar
    A)    Only 1
    B)    Both 1 and 2
    C)    Both 1 and 3
    D)    Both 1 and 4 

Q.227. Compounding of plastic is the process of.....
A)    Formation of complex with polymer
B)    Mixing various ingredients into polymer matrix to develop required properties
C)    Moulding or remolding of plastic
D)    Fabrication of plastic 

Q.228. Stabilizers are added to plastics to
A)    reduce thermal stability
B)    improve strength
C)    reduce weight
D)    improve thermal stability 

Q.229.Accelerators added during compounding of plastics can be
A)    Vegetable oils
B)    Saw dust
C)    Zinc oxide
D)    All of these 

Q.230.  Crushed asbestos added as a filler during compounding of plastics also impart.....
A)    extra flexibility to the plastic
B)    heat, flame resistance to the plastic
C)    heat, flame resistance and tensile strength to the plastic
D)    all of these 

Q.230.  Crushed asbestos added as a filler during compounding of plastics also impart.....
A)    extra flexibility to the plastic
B)    heat, flame resistance to the plastic
C)    heat, flame resistance and tensile strength to the plastic
D)    all of these 

Q.232. Controlled release of fertilizers and pesticides is a use of .....polymer
A)    Conducting
B)    Biodegradable
C)    LCP
D)    Electroluminescent 

Q. 233. Polyaniline and Polypyrrole are the examples of.....polymer
A)    Conducting
B)    Biodegradable
C)    LCP
D)    Electroluminescent 

Q.234. Ethylene diamine is ......monomer.
A)    Monofunctional
B)    Bifunctional
C)      Trifunctional
D)    None of these 

Q.235.  Adipic acid is a type of monomer which can form.....type of polymer
A)    Chain
B)    Step
C)    Both A and B
D)    None of these 

Q.236.  Melamine Formaldehyde is ....type of polymer
A)    Thermoplastic
B)    Thermosetting
C)    Either of these
D)    None of these 

Q.237. A plastic is compounded with.......to make it impervious to X-rays.
A)    Sodium salt
B)    Potassium salt
C)    Barium salt
D)    Organic compounds 

Q.238. Which of the following chemical, stabilizes the plastic at the moulding temperature?
A)    Glass fibre
B)    Lubricant
C)    Barium salt
D)    Benzoyl peroxide 

Q.239. The chain structure of the polymer having low strength, flexibility and amorphous nature is......
A)    Linear
B)    Branched
C)    Cross linked
D)    Vulcanized 

Q. 240. Match the following:

  1.    Synthetic rubber      P.    cis-1,4-polyisoprene
    2.    Natural rubber        Q.    trans-1,4-polyisoprene
    3.    Gutta percha          R.    Sulphur cross linked rubber
    4.    Vulcanized rubber     S.    SBR 

A) 1-Q, 2-P, 3-R, 4-S
B) 1-S, 2-P, 3-Q, 4-R
C) 1-R, 2-P, 3-Q, 4-S
D) 1-Q, 2-S, 3-P, 4-R  

Q.241. Which one of the following is Elastomer?
A)    PVC
B)    Epoxy resin
C)    Nylon
D)    Poly-cis-isoprene 

Q.242. Which of the following is trifunctional monomer?
A)    Glycerol
B)    Butadiene
C)    Propylene
D)    Ethylene 

Q.243. Which of the following is not a monomer?
A)    1,3-Butadiene
B)    Adipic acid
C)    Propanol
D)    Propylene 

Q.244. Out of following which one is not rubber?
A)    GRS
B)    Neoprene
C)    PE
D)    All of these 

Q.245. The mixture of Triethyl aluminium and Titanium tetrachloride is called as.....
A)    Polymer composite
B)    GRP
C)    Zeigler ñNatta catalyst
D)    Haberís Catalyst 

Q.246.  Match the following:    

  1.    GRS    P. Step polymerization
    2.    Condensation polymerization Q. Synthetic rubber
    3.    HDPE    R. Hydrogen peroxide
    4.    LDPE    S.  Zeigler-Natta catalyst

A)    1-Q, 2-P, 3-S, 4-R
B)    1-S, 2-P, 3-Q, 4-R
C)    1-R, 2-P, 3-Q, 4-S
D)    1-Q, 2-S, 3-P, 4-R 

Q. 247.  Match the following:    

  1.    Bulk  P. Pearl or Bead like appearance of polymer
    2.    Solution  Q. Micelle formation
    3.    Suspension R. Block copolymer
    4.    Emulsion  S.  Purity of Polymer

A)    1-Q, 2-P, 3-S, 4-R
B)    1-S, 2-R, 3-P, 4-Q
C)    1-R, 2-P, 3-Q, 4-S
D)    1-Q, 2-S, 3-P, 4-R 

Q.248.  A transparent plastic used for making camera projector lenses, a bullet proof Vests, etc is.....
A)      PPV
B)      PHBV
C)      Polycarbonate
D)       PA 

References

  • Questions by Prof. Mr. S. P. Charhate, Engineering Science Department, Sinhagarh COE, Pune
  • Wikinote Foundation
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Created by Vishal E on 2019/03/21 10:07
    
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