CBSE Questions for Class 12 Engineering Chemistry Polymers Quiz 4 - MCQExams.com

Identify the type of polymer.
(i) - A - A - A - A - A - A-
(ii) - A - B - B - A - A - A - B - A -
  • (i) Homopolymer, (ii) Copolymer
  • (i) Natural polymer, (ii) Synthetic polymer
  • (i) Linear polymer, (ii) Branched polymer
  • (i) Fibre, (ii) Elastomer
Which of the following are example of synthetic rubber?
  • Polychloroprene
  • Polyacrylonitrile
  • Buna$$-N$$
  • cis-polyisoprene
Polymers are often gigantic molecules consisting of long chains of repeating chemical-units. Which of the following is not a polymer?
  • Rubber
  • Cellulose
  • Protein
  • Glucose
Neoprene is a polymer made by using acetylene as a raw material. It is used as:
  • rubber in diving suits
  • plastic for car panels
  • plastic for dining tables
  • material for electrical switches
The S in buna-S refers to:
  • sulphur
  • styrene
  • sodium
  • salicylate
The cross-linked polymer(F) is:
1771292_246ed6b8b8a649889efd987b5b908910.png
  • Resol
  • Novolac
  • Bakelite
  • Decron
Non-stick frying pans are coated black with Teflon, a material that is resistant to heat. Teflon is a polymer of:
  • fluoromethane
  • styrene
  • ethylene
  • tetrafluoroethylene
The commercial name of polyacrylonitrile is
  • Dacron
  • Orion
  • $$PVC$$
  • Bakelite
Which of the following statements is wrong ?
  • PVC stands for polyvinyl chloride.
  • PTFE stands for teflon
  • PMMA stands for polymethyl methyl acrylate
  • Buna-S stands for natural rubber.
Teflon and Neoprene are the example of:
  • copolymer
  • monopolymer
  • homopolymer
  • condensation polymer.
When cellulose from wood or cotton is cooked in large tanks containing caustic soda and then through a narrow slit into another tank containing acid, we get:
  • cellophane, a paper-like plastic
  • rayon, a textile fibre
  • bakelite, an insulator
  • unvulcanized rubber
Plywood sheets are stuck together by unpolymerized:
  • nylon
  • carbon black
  • urea-formaldehyde resins
  • styrene and butadiene
Which of the following is a monomer of natural rubber?
  • Chloroprene
  • Caprolactam
  • Urea
  • None of these
Bakelite is an example of:
  • elastomer
  • fibre
  • thermoplastic
  • thermosetting polymer
Which of the following is a natural polymer ?
  • Poly (Butadiene-styrene)
  • Polybutadiene
  • Poly (Butadiene-acrylonitrile)
  • cis-1,4-polyisoprene
Terylene is a condensation polymer of ethylene glycol and:
  • benzoic acid
  • phthalic acid
  • terephthalic acid
  • salicylic acid
Composition of Ziegler-Natta catalyst is:
  • $$({ Et }_{ 3 })_{ 3 }Al. { Ti }{ Cl }_{ 2 }$$
  • $$\left( Me \right) _{ 3 }Al. { Ti }{ Cl }_{ 2 }$$
  • $$\left( Et \right) _{ 3 }Al. { Ti }{ Cl }_{ 4 }$$
  • $$\left( Et \right) _{ 3 }Al. { Pt }{ Cl }_{ 4 }$$
Synthetic polymer prepared by using caprolactam is known as:
  • terylene
  • teflon
  • nylon-6
  • neoprene
Which of the following is a condensation polymer?
  • Teflon
  • PVC
  • Polyester
  • Neoprene
Bakelite is obtained from phenol by reaction with:
  • $$HCHO$$
  • $$(CH_{2}OH)_{2}$$
  • $$CH_{3}CHO$$
  • $$CH_{3}COCH_{3}$$
Low-density polyethene (LDP) is used in the insulation of electricity carrying wires and manufacture of flexible pipes and squeeze bottles because:
  • it is tough, hard and rigid
  • it is chemically inert, tough, flexible and poor conductor of electricity
  • it is very tough, good conductor of electricity and flexible
  • it is chemically inert, very soft, water absorbent and poor conductor of heat
Formation of nylons and polyesters are called step growth polymerization because:
  • the polymers are formed by adding a monomer step by step
  • the polymers are formed by condensation and monomers are joined by loss of simple molecules like water
  • the monomers used for condensation are unsaturated molecules
  • the polymers are formed by addition of a large number of free radicals formed by monomers
Which of the following is not true about high density polythene?
  • Tough
  • Hard
  • Inert
  • Highly branched
Which polymer has 'chiral' monomer(s)?
  • $$PHBV$$
  • Nylon $$6,6$$
  • Buna$$-N$$
  • Neoprene
Which of the following polymers is synthesized using a free radical polymerization technique?
  • Terylene
  • Melamine polymer
  • Nylon 6,6
  • Teflon
Preparation of Bakelite proceeds via reactions :
  • Electrophilic substitution and dehydration
  • Electrophilic addition and dehydration
  • Nucleophilic addition and dehydration
  • Condensation and elimination
Which of the following is a biodegradable polymer?
  • $$-\!\!\![\,HN-(CH_2)_6NHCO-(CH_2)_4-\overset{O}{\overset{||}C}\,]\!\!\!-_n$$
  • $$-\!\!\![\,HN-(CH_2)_5-\overset{O}{\overset{||}C}]\!\!\!-_n$$ 
  •  $$-\!\!\![\,HN-(CH_2)_5CONH-CH_2-\overset{O}{\overset{||}C}\,]\!\!\!-_n$$
  • Both assertion and reason are correct and the reason is the correct explanation for the assertion
  • Both assertion and reason are correct but the reason is not the correct explanation for the assertion
  • Assertion is incorrect statement but the reason is correct
  • Both assertion and reason are incorrect
Choose the correct options(s) from the following.
  • Teflon is prepared by heating tetrafluoroethene in presence of a persulphate catalyst at high pressure
  • Natural rubber is polyisoprene containing trans alkene units
  • Nylon-6 has amide linkages
  • Cellulose has only $$\alpha-D-glucose$$ units that are joined by glycosidic linkages.
Which one of the following structures represents the neoprene polymer?
On complete hydrogenation, natural rubber produces :
  • ethylene-propylene copolymer
  • vulcanised rubber
  • polypropylene
  • polybutylene
Natural rubber has:
  • all cis-configuration
  • all trans-configuration
  • alternate cis- and trans-configuration
  • random cis-and trans-configuration
Nylon is an example of:
  • polyester
  • polysaccharide
  • polyamide
  • polythene
Which one of the following sets forms the biodegradable polymer?
  • $${H}_{2}N-{CH}_{2}-COOH$$ and $${H}_{2}N-{({CH}_{2})}_{5}-COOH$$
  • $$HO-{CH}_{2}-{CH}_{2}-OH$$ and $$COOH-C_6H_4-COOH$$
  • $$C_6H_5-CH=CH_2 $$ and $${CH}_{2}=CH-CH={CH}_{2}$$
  • $${CH}_{2}=CH-CN$$ and $${CH}_{2}=CH-CH={CH}_{2}$$
Isoprene is:
  • $$3$$-methyl-$$1, 2$$-butadiene
  • $$2$$-methyl-$$1, 3$$-butadiene
  • $$3$$-chloro-$$1, 2$$-butadiene
  • $$2$$-chloro-$$1, 3$$-butadiene
Polymer used in bullet proof glass is:
  • lexan
  • PMMA
  • nomex
  • kevlar
Polymer obtained by condensation polymerization is :
  • polythene
  • teflon
  • PVC
  • bakelite
Neoprene is:
  • Polyster
  • Polyamide
  • Polysaccharide
  • Polyhalodiene
$$CH_{2}= CH_{2}$$ is a ___.
  • monomer
  • polymer
  • isomer
  • equimer
The process of vulcanization was introduced by ____
  • Charles Goodyear
  • Kolbe
  • Wohler
  • Zeigher
The S in Buna- S refers to:
  • sulphur
  • styrene
  • sodium
  • just a trade name
Buna-S is a copolymer of:
  • styrene and $$1,\:3$$ - butadiene
  • styrene and ethylene
  • $$1,\:3$$ - butadiene and ethylene
  • $$1,\: 3$$ - butadiene and acrylonitrile
Among the following a natural polymer is:
  • Cellulose
  • PVC
  • Teflon
  • Polyethylene
Which of the following are co-polymers?
  • Bakelite
  • Melamine
  • Buna-S
  • Nylon-6,6
Natural rubber is which type of polymer?
  • Condensation polymer
  • Addition polymer
  • Co-ordination polymer
  • None of these
Polythene is:
  • Thermoplastic
  • Thermosetting
  • Both (a) and (b)
  • None of these
Which of the following is Teflon
  • $$[ -CF_2 - CF_2 - ]_n$$
  • $$CF_2 = CF_2$$
  • $$CF \equiv CF$$
  • None of these
The above shown polymer is obtained when a carbon compound is allowed to stand. It is a white solid. The polymer is
1763114_c3bf689451a648bda83f183ecaae1606.PNG
  • Trioxane
  • Formose
  • Paraformaldehyde
  • Metaldehyde
Natural rubber is:
  • Polyester
  • Polyamide
  • Polyisoprene
  • Polysaccharide
Example of formation of polymer is.
  • Formaldehyde $$\rightarrow $$ meta-formaldehyde
  • Acetaldehyde $$\rightarrow $$ para-aldehyde
  • Acetone $$\rightarrow $$ mesityl oxide
  • Ethene $$\rightarrow $$ polyethene
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