Class 12 Chemistry Chapter 15 Polymers MCQs | Class 12 Chemistry Chapter 15 Polymers Very Short Questions and Answers

Questions
1 The turbidity of a polymer solution measures
A light transmitted by the solution
B light scattered by the solution
C a light absorbed by the solution
D none of these

Answer:a light absorbed by the solution
2 Orlon has a unit of
A glycol
B isoprene
C vinyl cyanide
D acrolein

Answer: vinyl cyanide
3 The best way to prepare polyisobutylene is
A coordination polymerization
B free-radical polymerization
C cationic polymerization
D anionic polymerization

Answer:cationic polymerization
4 Which of the following is a biodegradable polymer?
A cellulose
B nylon-6
C polythene
D polyvinylchloride

Answer:cellulose
5 The substance used to harden the rubber for tire manufacture is
A CaC2
B wax
C carbon black
D 1, 3-butadiene

Answer: carbon black
6 Which of the following is not correct regarding terylene?
A synthetic fiber
B thermosetting plastic
C step-growth polymer
D condensation polymer

Answer: thermosetting plastic
7 Perlon is another name of
A Nylon-6, 10
B Nylon-4, 4
C Nylon 6, 6, 6
D Nylon-6

Answer: Nylon-6
8 Cellulose is a condensation polymer of
A α-galactose
B α-glucose
C β-glucose
D β-galactose

Answer:β-glucose
9 Toluene di-isocyanate is used to prepare
A polyamides
B polyurethanes
C polycarbonates
D polyesters

Answer:polycarbonates
10 Which of the following is an elastomer?
A Dacron
B Melamine
C Vulcanized rubber
D Polystyrene

Answer:Vulcanized rubber
11 Which one of the following pairs of monomers are used in the manufacture of 'Dacron'?
A acrylonitrile and vinyl acetate
B terephthalic acid and ethylene glycol
C phthalic acid and ethylene glycol
D adipic acid and hexamethylene diamine

Answer:terephthalic acid and ethylene glycol
12 Consider the following sequence of reactions.

The polymer (Y) is
A PVC
B Saran
C Neoprene
D Chloroprene

Answer:Neoprene
13 Which of the following is the chemical name of 'melamine'?
A l, 3, 5-triamine-2, 4, 6-triazine
B 2, 4, 6-triamine-l, 3, 5-triazine
C 2-amino-l, 3, 5-triazine
D 2, 4-diamino-l, 3, 5-triazine

Answer:2, 4, 6-triamine-l, 3, 5-triazine
14 Peroxide initiated polymerizations occur via
A hydrocarbon combustion
B natural process synthesis
C isomeric saponification
D free radical chain propagation

Answer:free radical chain propagation
15 Which of the following can be remelted time and again without producing any change?
A Bakelite
B Urea-formaldehyde resin
C PVC
D Melamineformaldehyderesin

Answer:PVC
16 Which of the following statement is correct?
A Vinyon is a copolymer of vinyl chloride and vinyl acetate
B Saran is a copolymer of vinyl chloride and vinylidene chloride
C Butyl rubber in a copolymer of isobutylene and isoprene
D All are correct

Answer:All are correct
17 Which of the following polymer can be used for lubrication and as an insulator?
A SBR
B PVC
C PTFE
D PAN

Answer:PTFE
18 The number average molecular mass and mass aver molecular mass of a polymer are respectively 30,000 and 40,000. The polydispersity index of the polymer is
A < 1
B > 1
C 1
D 0

Answer: > 1
19 Which is true about polymers?
(1) polymers have a low molecular weight
(2) polymers have high viscosity
(3) polymers scatter light
(4) polymers do not carry any charge
A 1, 2 and3
B 1, 2 and 4
C 2, 3 and 4
D 1, 3 and 4

Answer:2, 3 and 4
20 Which /are correct about spandex?
(I) It is a polyurethane
(II) It is a flexible polymer
(III) It is a polymer of toluene 2, 6 di isocyanates, and glycol
(IV) lt is a polymer of ammonium carbamate
A I, II, III
B I, I1, IV
C I1, I1, IV tt
D I, II, III, IV

Answer:I, II, III

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