CBSE Questions for Class 12 Engineering Chemistry Polymers Quiz 6 - MCQExams.com

Super glue or crazy glue is:
  • polymethyl methacrylate
  • polyethyl acrylate
  • polymethyl αα-cyanoacrylate
  • polyethyl methacrylate
Polypropylene can be obtained by polymerisation of :
  • CH2=CHCH3CH2=CHCH3
  • CH2=CH2CH2=CH2
  • CH4CH4
  • CH3CH3CH3CH3
The monomer for the given compound is:
640399_b1a258f5c74b4114abd7d245b75492ca.jpg
  • 2-methylpropene
  • Styrene
  • Propylene
  • Ethene
Which of the following statements is not true about low density polythene?
  • Tough
  • Highly branched structure
  • Poor conductor of electricity
  • Hard
In elastomer, intermolecular forces are:
  • Nil
  • Weak
  • Strong
  • Very strong
Which type of polymer is natural rubber?
  • Condensation polymer
  • Addition polymer
  • Coordination polymer
  • None of the above
Perlon is:
  • terelene
  • nylon-6
  • rubber
  • polyester
Neoprene is a polymer of:
  • isoprene
  • butadiene
  • styrene
  • chloroprene
Structure of (monomer unit of) natural rubber is
  • (CH2CH2)n(CH2CH2)n
Which of the following is not a biopolymer?
  • Starch
  • Rubber
  • Proteins
  • Nucleic acids
A polyamide synthetic polymer prepared by prolonged heating of caprolactum, is:
  • nylon-6, 6
  • nylon-6
  • nylon-6, 10
  • glyptal
Which of the following is used to make non-stick cook-wares?
  • Polyvinyl chloride
  • Polytetra fluoro ethylene
  • Polystyrene
  • Polyethylene terephthalate
Dacron is an example of:
  • polyamide
  • polypropylene
  • polyurethane
  • polyester
Buna-S is a polymer of:
  • butadiene only
  • butadiene and nitrile
  • styrene only
  • butadiene and styrene
[NH(CH2)6NHCO(CH2)4CO]n[NH(CH2)6NHCO(CH2)4CO]n is a:
  • thermosetting polymer
  • homopolymer
  • copolymer
  • addition polymer
Which of the following is a biodergradable polymer?
  • Polythene
  • PVC
  • Bakelite
  • PHBV
Which one of the following statements is not true?
  • Buna-S is a co-polymer of butadiene and styrene
  • Natural rubber is a 1, 4-polymer of isoprene
  • In vulcanization, the formation of sulphur bridges between different chains make rubber harder and stronger
  • Natural rubber has the trans-configuration at every double bond
Buna-N synthetic rubber is a co-polymer of 
  • H2C=CHCH=CH2H2C=CHCH=CH2 and H5C6CH=CH2H5C6CH=CH2
  • H2C=CHCNH2C=CHCN and H5C=CHCH=CH2H5C=CHCH=CH2
The polymer of natural rubber is
  • all trans isoprene
  • Buna-N
  • all cis isoprene
  • none of these
The raw material used in nylon-6 is:
  • adipic acid
  • phthalic acid
  • ethylene glycol
  • caprolactum
Mark out the most unlike form of polymerization of H2C=CHCH=CH2H2C=CHCH=CH2
Which is not a polymer?
  • Sucrose
  • Enzyme
  • Starch
  • Teflon
Condensation product of caprolactum is:
  • nylon-6
  • nylon-6,6
  • nylon-60
  • nylon-6,10
Identify XX in the reaction.

CHCl3SbF3HFCHF2Cl1070K(X)+2HClCHCl3SbF3−−HFCHF2Cl1070K(X)+2HCl
  • F2C=CF2F2C=CF2
  • ClFC=CFClClFC=CFCl
  • F2C=CFClF2C=CFCl
  • F2C=CCl2F2C=CCl2
The characteristics of condensation polymerization are given below:
I. only C-C linkages present in the polymer structure
II. use of bifunctional or polyfunctional monomers
III. elimination of a small byproduct molecule
Which of the following is true?
  • I, II, III
  • Only III
  • I and II
  • II and III
Dacron (a polymer) is obtained by the condensation polymerization of:
  • Phenol and formaldehyde
  • Phenol and phthalic acid
  • Terepthalic acid and formaldehyde
  • Dimethyl terephthalate and ethylene glycol
Which of the following statements is not true?
  • Step growth polymerisation requires a bifunctional monomer.
  • Nylon 6 is an example of step-growth polymerisation
  • Chain growth polymerisation includes both homopolymerisation and copolymerisation.
  • Chain growth polymerisation involves homopolymerisation only.

Which step is the chain propagation step in the above mechanism?

1185210_6010e3acf9ab46c6b8d694f40de02934.png
  • 11
  • 22
  • 33
  • 44
Which of the following is an example of condensation polymer?
  • Teflon
  • Melamine
  • Nylon-6
  • BUNA-S
Which of the following has cross-linked polymer?
  • Vulcanised rubber
  • Nylon
  • Phenol-formaldehyde resins
  • Both AA and CC
The structure of the polymer obtained by the following reaction is:
1287596_4e046ccb2916407685c18024262a3330.png
The solution containing 4.0 % PVC in one litre of dioxane was found to have osmotic pressure of 6.0×1046.0×104 atm at 300 K. The molecular mass of polymer is
  • 6.4×1026.4×102
  • 3.0×1023.0×102
  • 1.6×1051.6×105
  • 5.6×1045.6×104
Polymer with highest softening point is 
  • LDPE
  • HDPE
  • teflon
  • bakelite
Polymer formation from monomers starts by:
  • Condensation reaction between monomers
  • Coordination reaction between monomers
  • Conversion of one monomer into other monomer
  • Hydrolysis of monomers
Natural rubber is a polymer of isoprene (2-methyl buta-1,3-diene). If natural rubber is treated with O3O3 followed by Zn/H2OZn/H2O, the final product will be:
  • CH3O||CCH2CH2CHO
  • CH3CH2O||CCH2CHO
Which of the following polymers shows a sharp melting point?
  • Butyl rubber
  • Polystyrene
  • Bakelite
  • Nylon-6,6
Which of the following is an example of elastomers?
  • Rubber
  • Nylon-6,6
  • PVC
  • Bakelite
Natural rubber is a polymer of 
  • Co-cis-trans isoprene
  • trans-isoprene
  • cis-isoprene
  • none of these
Favourable conditions for preparation of low density polythene (LDP) is: 
  • high P, low T
  • low P, high T
  • high P, high T
  • low P, low T
Caprolactum is the monomer for 
  • Nylon -6
  • Nylon 6,6
  • Nylon-2- Nylon-6
  • Terylene
Which of the following polymer is condensation as well as cross-linked polymer?
  • Bakelite
  • Nylon-6.6
  • Nylon-2,,Nylon-6
  • Dacron
Which polymer is used in the preparation of hose-pipe?
  • Orlon
  • Polystyrene
  • Teflon
  • Altame
A polymer used in paints is:
  • nomex
  • thiokol
  • saran
  • glyptal
Rubber is very soft. Therefore, it is vulcanized and used in tires. Vulcanised rubber resists:
  • drops of acid rain
  • cold temperatures
  • jerking movement
  • wear and tear due to friction
Which of the following polymer is used in pigment?
  • Buna- S
  • Neoprene
  • Teflon
  • Orlon
Consider the following repeat unit structure:
1337074_53347213c47c45419d2ba05cac4f265c.png
  • Poly(amide-imide)
  • Polyacrylonitrile
  • Polybutadiene
  • Polyethylene
Natural fibre is :-
  • Bakelite
  • Cellulose
  • Rubber
  • Nylon-6
Which of the following cannot be grouped as polyolefins?
  • Polethene
  • Polypropene
  • Nylon-6
  • none
Which one of the following polymer is step-growth polymer?
  • Polyethylene
  • Nylon-6,6
  • Buna-S rubber
  • Orlon
Which of the following is not addition copolymer?
  • Saran
  • BUNA -N
  • SBR
  • PVC
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