CBSE Questions for Class 12 Engineering Chemistry Polymers Quiz 8 - MCQExams.com

Teflon is a polymer of :
  • ethylene
  • vinyl chloride
  • acetonitrile
  • tetrafluoroethene
Benzene is a polymer of
  • Methane
  • Acetylene
  • Ethane
  • Ethylene
Which polymer is used  in non-stick cooking vessels ?
  • Polythene
  • Isoprene
  • Teflon
  • Neoprene
The biodegradable polymer is:
  • Nylon -6,6
  • Nylon -2-Nylon 6
  • Nylon -6
  • Buna-S
Which polymer is obtained in the following sequence of reactions?
$$CHCl_3 \xrightarrow[SbF_3]{HF} X \xrightarrow{800^0C} Y \xrightarrow{polymerization} \underset{(Polymer)}{Plastic}$$
  • Bakelite
  • Teflon
  • Polythene
  • Nylon-6, 6
Rubber is a:
  • conducting polymer
  • oriented polymer
  • elastomer
  • strong commercial fabric
What substance is formed when $$F_2C = CF_2$$ is polymerized?
  • Polyethylene
  • Polyurathene
  • PVC
  • Teflon
Chain-growth polymerization may proceed by the following mechanism:
  • free radical polymerization
  • cationic polymerization
  • anionic polymerization
  • all of the above
X and Y are:
1721013_1cb3d0c72881475f93e8346c1d5e6eb8.PNG
  • X - Natural rubber
    Y - gutta percha
  • X - gutta percha
    Y - Natural rubber
  • X - Natural rubber
    Y - Natural rubber
  • X - gutta percha
    Y - gutta percha
List-l                         List-ll                                    
A)Rayon                   1)$$CH_{2}O+C_{6}H_{5}OH$$

B)Silicone polymers  2) $$F_{2}C= CF_{2}$$
 
                                             R
                                              |
C) Bakelite              3)  HO-Si-OH
                                              |
                                              R
D) Teflon                     4)Cellulose
  • A-4 B-3 C-1 D-2
  • A- 1 B-3 C-2 D-4
  • A-4 B-2 C-3 D-1
  • A-2 B-4 C-3 D-1
Which of the following is isoprene?
  • $$CH_{2}= CH-CH= CH_{2}$$
  • $$CH_{2}= C(CH_3)-CH= CH_{2}$$
  • $$CH_{2}= C(Cl)-CH= CH_{2}$$
  • $$CH_{2}= C(CH_3)-C(CH_3)= CH_{2}$$
Which of the following is not a synthetic rubber?
  • Cis - $$1, 4$$ - polyisoprene
  • Neoprene
  • Buna -S
  • Buna - N
Polymerization in which two or more chemically different monomers take part is called:
  • Addition polymerization
  • Copolymerization
  • Chain polymerization
  • Homo polymerization
A polyamide polymer is:
  • neoprene
  • PVC
  • acrilon
  • nylon - 6, 6
Which of the following monomer will make PHBV more flexible?
  • $$\beta -$$ hydroxy butyric acid
  • $$\beta -$$ hydroxy velaric acid
  • Glycine
  • Lactic acid
The IUPAC name of the compound formed when natural rubber is subjected to ozonolysis is _____.
  • $$3$$-oxopentanal
  • $$5$$-formyl-$$2$$-pentanone
  • $$4$$-oxopentanal
  • $$4$$-formyl-$$2$$-pentanone

Assertion: Natural rubber is all cis-polyisoprene. 

Reason: trans - polyisoprene cannot be formed.
  • Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion
  • Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion
  • Assertion is correct but Reason is incorrect.
  • Assertion is incorrect but Reason is correct.
Phenol gives two polymers on condensation with formaldehyde:

X and Y are
1721020_8890e0318dc9453e92cfb68207de7ea9.PNG
  • X = bakelite;
    Y = novolak
  • X = novolak;
    Y = bakelite
  • X = bakelite;
    Y = bakelite
  • X = novolak;
    Y = novolak
The figure below shows three steps (A, B, C) of Polymerase Chain Reaction (PCR). Select the option giving
correct identification together with what it represents ?

71416.jpg
  • A - Denaturation at a temperature of about $$50^0C$$
  • C - Extension in the presence of heat stable DNA polymerase
  • A - Annealing with two sets of primers
  • B - Denaturation at a temperature of about $$98^0C$$ separating the two DNA strands
Which one of the following statements is not true?
  • Buna-S is a copolymer 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
Vulcanization of rubber helps to make rubber hard and resistant to hot and cold conditions.
  • True
  • False
Which of the following is/are polyamide molecule?
  • Terylene
  • Rayon
  • Nylon - $$6$$
  • Polystyrene
Nylon is:
  • Polyester fibre
  • Polyamide fibre
  • Polythene derivative
  • Polyethylene methyl acrylate fibre
Which of the following is not made up of polyamides?
  • Artificial silk
  • Natural silk
  • Wool
  • Nylon
Select the correct statement:
  • High density polythene is a linear polymer
  • Low densiy polythene is a branched chain polymer
  • Chain growth polymers are also known as addition polymer
  • Step growth polymer is also known condensation polymer
State, whether the following statements are True or False.
2-Chlorobutadiene is a monomer of synthetic rubber.
  • True
  • False
The process of addition of sulphur to rubber is called ____________ .
  • vulcenization
  • vulcanization
  • valcanization
  • vulcanisation
In the process of vulcanization:
  • natural rubber is heated with sulphur
  • natural rubber is heated with carbon
  • natural rubber is heated with phosphorous
  • natural rubber is heated with sodium
In fractional distillation of petroleum, the vapours with highest boiling point:
  • condense in uppermost portion
  • condense in lowermost portion
  • condense in middle portion
  • do not condense
The monomer that undergo radical polymerisation most easily is:
  • $$CH_{2}=CH_{2}$$
  • $$C_{6}H_{5}CH=CH_{2}$$
  • $$C_6H_6$$
  • $$CH_{3}-CH=CH_{2}$$
The polymer obtained when monomeric unit ($$CH_{2}=C(Cl)-CH=CH_{2}$$) used is:
  • neoprene
  • stilbene
  • styrene
  • chloropicrin
The non-metal used to treat rubber in the process of vulcanization is:
  • sulphur
  • phosphorus
  • carbon
  • chloride
Which of the following statements is not true about polymers ?
  • Polymers have high viscosity
  • Polymers do not carry any charge
  • Polymers scatter light
  • Polymers have low molecular weight
Which of the following is a co-polymer ?
  • Polytetrafluoroethylene
  • Polyvinyl chloride
  • Polyethylene
  • Nylon - $$6, \:6$$
  • Natural rubber
Which of the following is a fully flourinated polymer ?
  • Thiokol
  • Teflon
  • Neoprene
  • PVC
State, whether the following statements are True or False.
Bakelite is an example of thermoplastic.
  • True
  • False
Which one of the following is an example of co-polymer?
  • Teflon
  • Buna-S
  • PVC
  • Polypropylene
1,3-Butadine and styrene on polymerisation give: 
  • Buna-S
  • Terylene
  • Teflon
  • Bakelite
Trans-form of polyisoprene is:
  • Gutta-percha
  • Hydrochloride rubber
  • Buna-N
  • Synthetic rubber
Natural silk is a
  • Polyester
  • Polyamide
  • Polyacid
  • Polysaccharide
Statement 1: Novolac is soft and has a low melting point.

Statement 2: It is highly cross-linked polymer.
  • 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 polymers can be used for lubrication and as an insulator ?
  • SBR
  • PAN
  • PTFE
  • PVC
Acrylonitrile, butadiene and styrene are a kind of:
  • addition polymer
  • co-polymer
  • homopolymer
  • thermosetting polymer
Chloroprene is the monomer of:
  • PVC
  • Neoprene
  • Polystyrene
  • Polythene
Which of the following monomers gives the polymer neoprene on polymerisation ?
  • $$CCl_2=CCI_2$$
  • $$CH_2=CHCl$$
  • $$CH_2=C(Cl)-CH=CH_2$$
  • $$CF_2=CF_2$$
Which of the following is a polyamide?
  • Telfon
  • Nylon-6, 6
  • Bakelite
  • Terylene
Which of the following is not a polymer ?
  • Sucrose
  • Teflon
  • Starch
  • Enzyme
The people who weave the clothes are called:
  • weavers
  • clothesmans
  • tailors
  • workers
Woolen clothes are prepared from : 
  • Wool warms
  • Carbon compounds
  • Fleece of sheep
  • Cotton plants
Match List 1 with List 2 and choose the correct option.

List 1List 2 
A. TeflonMaking electrical switches
B. PVCFlame resistant
C. MelamineNon-stick coating of cookware
D.  BakeliteThermoplastic
  • A-4, B-3, C-2, D-1
  • A-3, B-4, C-2, D-1
  • A-3, B-4, C-1, D-2
  • A-2, B-4, C-3, D-1
0:0:1


Answered Not Answered Not Visited Correct : 0 Incorrect : 0

Practice Class 12 Engineering Chemistry Quiz Questions and Answers