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

(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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