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Reaction Mechanism Based Polymer MCQs With Solutions:

1. The monomer of the polymer is

<p><img alt=”” src=”https://itquiz.in/wp-content/uploads/2024/09/chem_YCT_Chem_Vol_II_ch15.Q327.png” style=”height:200px; width:200px” /></p>

A. <p><img alt=”” src=”https://itquiz.in/wp-content/uploads/2024/09/chem_YCT_Chem_Vol_II_ch15.Q327.option1.png” style=”height:200px; width:200px” /></p>
B. CH₂=CH-CH₂
C. CH₂=CH-C₆H₅
D. (CH₃)₂C=C(CH₃)₂

Answer: A

2. Which one of the following statements is not true?

A. Buna-S is a copolymer of butadiene and styrene
B. Natural rubber is a 1,4-polymer of isoprene
C. In vulcanization, sulphur bridges make rubber stronger
D. Natural rubber has trans-configuration at every double bond

Answer: D

3. Of the following which one is classified as polyester polymer?

A. Terylene
B. Bakelite
C. Melamine
D. Nylon-6,6

Answer: A

4. Which is the monomer of neoprene in the following?

A. <p><img alt=”” src=”https://itquiz.in/wp-content/uploads/2024/09/chem_YCT_Chem_Vol_II_ch15.Q330.option1.png” style=”height:200px; width:200px” /></p>
B. CH₂=CH-C≡CH
C. CH₂=CH-CH=CH₂
D. <p><img alt=”” src=”https://itquiz.in/wp-content/uploads/2024/09/chem_YCT_Chem_Vol_II_ch15.Q330.option4.png” style=”height:200px; width:200px” /></p>

Answer: A

5. Which compound polymerizes to form dacron?

A. Propylene + para HO-(C₆H₄)-OH
B. Benzoic acid + ethanol
C. Terephthalic acid + ethylene glycol
D. Benzoic acid + para HO-(C₆H₄)-OH

Answer: C

6. Which polymer is prepared by addition polymerization?

A. Dacron
B. Teflon
C. Nylon-6,6
D. Novolac

Answer: B

7. Bakelite is obtained from phenol by reacting with

A. Acetaldehyde
B. Acetal
C. Formaldehyde
D. Chlorobenzene

Answer: C

8. Which of the following is cross-linked polymer?

A. Teflon
B. Orlon
C. Nylon
D. Bakelite

Answer: D

9. Teflon polymer is formed by polymerization of

A. CH₂=CH-CN
B. F₂C=CF₂
C. CCl₂=CH₂
D. H₂C=CHCl

Answer: B

10. Teflon is an example of

A. Polyamide
B. Addition polymer
C. Polyester
D. Formaldehyde resin

Answer: B

11. F₂C=CF₂ is a monomer of

A. Teflon
B. Nylon
C. Glyptal
D. Buna-S

Answer: A

12. Which one of the following is a condensation polymer?

A. PVC
B. Teflon
C. Dacron
D. Polystyrene

Answer: C

13. Among the following the branched chain polymer is

a) Polyvinyl chloride
b) Bakelite
c) Low density polythene
d) High density polythene

Answer: c

14. Which one of the following polymer is a copolymer formed by condensation polymerisation?

a) Buna-S
b) Neoprene
c) Polythene
d) Melamine-formaldehyde

Answer: d

15. Natural rubber is a polymer of monomer isoprene. During polymerisation

a) 1,4-addition takes place
b) 1,2-addition takes place
c) 1,3-addition takes place
d) Both double bonds are converted into single bond

Answer: a

16. Which of the following is not true?

a) In vulcanisation the rubber becomes harder and stronger
b) Natural rubber has trans configuration at every double bond
c) Buna-S is a copolymer of butene and styrene
d) Natural rubber is 1,4-polymer of isoprene

Answer: d

17. The monomers used for preparation of nylon 2-nylon 6 is/are

a) ε-caprolactam
b) Alanine and amino caproic acid
c) Glycine and amino caproic acid
d) Hexamethylenediamine and adipic acid

Answer: c

18. Which among the following polymer does not show cross linking in it?

a) Nylon-6
b) Bakelite
c) Melamine
d) Vulcanised rubber

Answer: a

19. The monomers used in the preparation of dextron are

a) Glycine and α-amino caproic acid
b) 3-hydroxy butanoic acid and 3-hydroxy pentanoic acid
c) Glycine and lactic acid
d) Lactic acid and glycolic acid

Answer: d

20. Lactic acid and glycolic acid are the monomers used for preparation of polymer

a) Nylon-2-nylon-6
b) Dextron
c) PHBV
d) Buna-N

Answer: b

21. Which of the following can absorb over 90% of its own mass of water and also does not stick to wounds?

a) Saran
b) Thiokol
c) Rayon
d) Gun cotton

Answer: c

22. Adipic acid is used in the preparation of

a) Nylon-6
b) Dacron
c) Nylon-66
d) Novolac

Answer: c