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CBSE Questions for Class 12 Engineering Chemistry Polymers Quiz 2 - MCQExams.com

The number of πbonds present in the monomer of polyacrylonitrile is:
  • 2
  • 1
  • 3
  • 4
Which of the following is the IUPAC name of the aromatic monomer is present in melmac?
  • 2,4,6 -Triamino - 1,3,5 - triazine
  • Methanal
  • 1,3,5 - Triamine - 2,4,6 - triazine
  • Melamine
The formation of polyethylene from calcium carbide takes places as follows :
CaC2+2H2OCa(OH)2+C2H2
C2H2+H2C2H4
nC2H4(CH2CH2)n
The amount of polyethylene obtained from 64 kg of CaC2 is :
  • 14 kg
  • 7 kg
  • 21 kg
  • 28 kg
Which of the following is not correctly matched?
Statement 1: Polybutadiene is an example of step growth polymer.
Statement 2: Copolymerisation of butadiene and acrylonitrile gives Buna-N.
  • Statement 1 and statement 2 is true and statement 2 is the correct explanation of statement 1
  • Statement 1 and statement 2 is true but statement 2 is not the correct explanation of statement 1
  • Statement 1 is true and statement 2 is false
  • Statement 1 is false and statement 2 is true
Which of the following sets contains only co-polymers ?
  • PVC, Neoprene
  • Polythene, Polyester
  • Nylon-6, Teflon
  • Melmac, Bakelite
Which of the following is the biodegradable polymer of polyamide class ?
  • Nylon - 6,6
  • Nylon - 2 - nylon - 6
  • Dextran
  • PHBV
The PDI (polydisersity index) is the ratio of weight to number-average molecular masses, Mˉw/Mˉn. In natural polymers, which are generally monodispersed, PDI is ............. and in synthetic polymers which are always polydispersed, PDI is ............. because Mˉw is always ............. than Mˉn. Fill in the blanks. 
  • greater than 1, 1, higher
  • 1, greater than 1, higher
  • less than 1, 1, lower
  • 1, less than 1, lower
Statement 1: Teflon has high thermal stability and chemical inertness.

Statement 2: It has strong C-F bonds.

Choose the correct option:
  • Statement 1 is true: Statement 2 is true; statement 2 is the correct explanation of statement 1
  • Statement 1 is true: statement 2 is true; statement 2 is not the correct explanation of statement 1
  • Statement 1 is true; statement 2 is false
  • Statement 1 is false; statement 2 is true
Which of the following is a step-growth polymer ?
  • Polyacrylonitrile
  • Polyisoprene
  • Nylon
  • Polythene
Which of the following are condensation copolymers ?
  • Nylon - 6
  • Nylon - 6,6
  • Dacron
  • Glyptal
The monomeric repeating units of nylon - 6 is:
  • caprolactam
  • phenol and formaldehyde
  • tetrafluoroethylene
  • butadiene
Which one of these is a monomer of Bakelite?
  • Vinyl acetate
  • Tetrafluoroethylene
  • Formaldehyde
  • Propylene
The polymer that can be classified as polyester polymer is: 
  • Bakelite
  • Melamine
  • Nylon-6, 6
  • Terylene
Which of the following processes can be used to prepare polystyrene ?
  • Anionic
  • Cationic
  • Free radicals
  • Ziegler-Natta
What is the monomer unit for teflon?
Which of the following are made of polyamides ?
  • Wool
  • Natural silk
  • Rayon
  • Nylon
Which of the following are biopolymers ?
  • Nucleic acids
  • Leather
  • Baklite
  • Orlon
Which material is used for vulcanisation of rubber?
  • Iron
  • Sulphur
  • Chlorine
  • Calcium Carbonate
The chemical name of melamine is_________.
  • 2,4-Diamino-1,3,5-triazine
  • 2-Amino-1,3,5-triazine
  • 2,4,6-Triamino-1,3,5-triazine
  • 1,3,5-Triamino-2,4,6-triazine
Which of the following is not a condensation polymer ?
  • Nylon - 6,6
  • PTFE
  • Dacron
  • Glyptal
Which one of the following polymer is prepared by condensation polymerization?
  • Polystyrene
  • Nylon - 6,6
  • Teflon
  • Rubber
The product that you would expect to obtain from catalytic hydrogenation of natural rubber is_________.
  • syndiotactic
  • atactic
  • isotactic
  • either atatic or isotatic
Bakelite is ___.
  • rubber
  • rayon
  • brittle plastic
  • plasticisers
Silk worm : Cocoon :: Wool: ?
  • Hair of rabbit
  • Cotton plant
  • Fleece of sheep
  • Jute of hemp
The plastic product which can be remoulded is
  • bakelite
  • melamine
  • polyethene
  • polycot
Teflon is :
  • a natural fibre
  • a synthetic fibre
  • a polymer
  • a cellulose
Which of the following is/are not a condensation copolymer?
  • Nylon-6
  • Nylon-6,6
  • Dacron
  • PVC
[CH2CHOHCH2CHOHCH2CHOH]n

Polyvinyl alcohol (as shown above) is a unique polymer having high affinity for water. Which of the following procedures would be most suitable for its preparation?
  • radical chain polymerisation of CH2=CHCH2OH
  • radical chain polymerisation of CH2=CHOH
  • radical chain polymerisation of CH2=CHCO2CH3, following by base catalysed hydrolysis
  • radical chain polymerisation of CH2=CHOCOCH3, followed by acid catalysed hydrolysis
  • radical chain polymerisation of CH2=CHOCOCH3, followed by base catalysed hydrolysis
The repeating unit present in nylon 6 is:
  • [NH(CH2)6NHCO(CH2)4CO]
  • [CO(CH2)5NH]
  • [CO(CH2)6NH]
  • [CO(CH2)4NH]
  • [NH(CH2)4NHCO(CH2)6CO]
The monomers used in preparation of dextron are:
  • lactic acid and glycolic acid
  • 3-hydroxy butanoic acid and 3-hydroxy pentanoic acid
  • styrene and 1, 3-butadiene
  • hexamethylenediamine and adipic acid
Tubeless tyres are co-polymers of isoprene and :
  • neoprene
  • silicons
  • isobutylene
  • PAN
Which one of the following statement is not true?
  • Natural rubber has trans configuration at every double bond
  • BUNA-S is copolymer of butadiene and styrene
  • Natural rubber is 1,4 polymer of isoprene
  • In vulcanization, the formation of sulphur bridges between different chains makes rubber harder and stronger
Under high pressure and in presence of nickel cyanide catalyst, acetylene on polymerisation gives:
  • Benzene
  • Mesitylene
  • Cyclo-octatetraene
  • Vinyl acetylene
Which of the following is/are true for teflon?
  • It is yellow, dense, amorphous, extremely chemically reactive compound.
  • It is good electrical conductor.
  • It has self lubricating property.
  • It is used in manufacturing artificial hip joints used for the patients with arthritis.
When 280 gm of ethylene polymerises to polyethene according to the equation. 

nCH2=CH2(CH2CH2)n

The weight and mole of polyethylene formed will be:
  • 280, 10n
  • 280n, n
  • 280n, 280
  • 280, 10n
Teflon is an example of polymer which is a/an:
  • polyamide
  • addition polymer
  • polyester
  • formaldehyde resin
Which among the following is not a natural polymer?
  • Wool
  • Silk
  • Rubber
  • PVC
During long distance travel you would like to take drinking water in a bottle made up of :
  • glass
  • plastic
  • leather
  • steel
PP (Polypropylene) is used for making _____________.
  • disposable cups
  • liquid detergents
  • grocery bags
  • electric switches
Which of the following are polyesters?
Cotton, Terylene, Nylon, PET, Rayon, Acrylic.
  • Cotton, Nylon, Rayon
  • Acrylic, PET, Cotton
  • Terylene, PET, Acrylic
  • PET, Nylon, Rayon
The polymer, which is the constituent of cotton is:
  • cellulose
  • ester
  • rayon
  • nylon
Rubber is heated with sulphur and the process is known as:
  • Galvanization
  • Vulcanization
  • Bessemerization
  • Sulphonation
The monomer of Buna-S are:
  • styrene and butadiene
  • isoprene and butadiene
  • vinyl chloride and Sulphur
  • butadiene.
When formaldehyde is heated with phenol in the presence of an alkali, the product formed is:
  • rubber
  • bakelite
  • chloroprene
  • neoprene
The polymer formed by condensation of adipic acid and hexamethylene diamine is:
  • Isoprene
  • Rayon
  • Terylene
  • Nylon-6,6
Bakelite is obtained from phenol by reaction with : 1
  • Acetaldehyde
  • Acetal
  • Formaldehyde
  • Chlorobenzene
What is Modacrylic?
  • Modified acrylic
  • Natural fibre acrylic
  • Acrylic and polyester
  • None of above
The monomer of Natural Rubber is:
  • CH2=CCH=CH2|CH3
  • Cl|CH2=CCH=CH2
  • CH2=CHCH=CH2
  • None of these
Which of the following is an addition polymer ?
  • Neoprene
  • Teflon
  • Polyvinylchloride
  • All of the above
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