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Free Radical Polymerization MCQs Practice Set with Answers:

1. The polymer which is used in non-sticky kitchenware is

A. PVC
B. Teflon
C. Rayon
D. Isoprene
Answer: B

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2. Terylene polymer is obtained by condensation of

A. Ethane-1,2-diol and Benzene-1,3-dicarboxylic acid
B. Propane-1,2-diol and Benzene-1,4-dicarboxylic acid
C. Ethane-1,2-diol and Benzene-1,4-dicarboxylic acid
D. Ethane-1,2-diol and Benzene-1,2-dicarboxylic acid
Answer: C

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3. Match List I with List II

A → II (Phenol formaldehyde resin → Novolac)
B → III (Butadiene + styrene → Buna-S)
C → I (Polyester glycol + phthalic acid → Glyptal)
D → IV (Polyester glycol + terephthalic acid → Dacron)

Answer: A-II, B-III, C-I, D-IV

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4. Vulcanization of rubber is carried out by heating a mixture of

A. Isoprene and styrene
B. Neoprene and sulphur
C. Isoprene and sulphur
D. Neoprene and styrene
Answer: C

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5. The polymer manufactured by condensation polymerization is

A. Polyethylene
B. Polystyrene
C. Polypropylene
D. Polyvinyl chloride
Answer: A

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6. The rearrangement used in Nylon-6 preparation is

A. Wolff rearrangement
B. Hofmann rearrangement
C. Curtius rearrangement
D. Beckmann rearrangement
Answer: D

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7. Which of the following is called a polyamide?

A. Rayon
B. Nylon
C. Terylene
D. Orlon
Answer: B

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8. The polymer obtained with methylene bridges is

A. PVC
B. Buna-S
C. Polyacrylonitrile
D. Bakelite
Answer: D

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9. Polymer formed using caprolactam is

A. Nylon-6,6
B. Nylon-2-nylon-6
C. Melamine polymer
D. Nylon-6
Answer: D

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10. Example of chain-growth polymer is

A. Bakelite
B. Teflon
C. Nylon
D. Terylene
Answer: B

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11. Which is not a semi-synthetic polymer?

A. Cis-polyisoprene
B. Cellulose nitrate
C. Cellulose acetate
D. Vulcanised rubber
Answer: A

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12. Assertion-Reason (Vulcanisation)

Answer: B

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13. Nylon-66 is made from

A. HOOC(CH₂)₄COOH + H₂N(CH₂)₆NH₂
B. CH₂=CH-C(CH)=CH₂
C. CH₂=CH₂
D. None
Answer: A

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14. Chain transfer reagent is

A. CCl₄
B. CH₄
C. O₂
D. H₂
Answer: A

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15. Polymer with low degree of polymerization is

A. Higher polymer
B. Oligomer
C. Macromolecule
D. Copolymer
Answer: B

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16. Conversion in free radical polymerization increases with

A. Temperature
B. Time
C. Monomer concentration
D. All of these
Answer: D

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17. Buna-N is a copolymer of

A. Butadiene + styrene
B. Butadiene + acrylonitrile
C. Adipic acid + diamine
D. Ethylene glycol + terephthalic acid
Answer: B

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18. PHBV is formed by

A. 3-hydroxybutanoic acid + 3-hydroxypentanoic acid
B. Only butanoic acid
C. Only pentanoic acid
D. Glycolic + lactic acid
Answer: A

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19. Caprolactam gives

A. Nylon-6
B. Nylon-6,6
C. Nylon-60
D. Nylon-6,10
Answer: A

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20. Synthetic wigs polymer is

A. PVC
B. PAN
C. Cellulose
D. Dynel
Answer: D

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21. Not a chain growth polymer

A. Neoprene
B. Buna-S
C. PMMA
D. Glyptal
Answer: D

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22. Dimethyl terephthalate + ethylene glycol gives

A. Nylon-6
B. Nylon-66
C. Dacron
D. Neoprene
Answer: C

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23. Ziegler catalyst is

A. Titanium oxide
B. Titanium isopropoxide
C. TiCl₄ + Al(C₂H₅)₃
D. Lithium compound
Answer: C

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24. Bakelite is formed from

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

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25. Terylene is made from

A. Benzoic acid
B. Phthalic acid
C. Salicylic acid
D. Terephthalic acid
Answer: D

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26. Monomer of neoprene

A. CF₂=CF₂
B. CH₂=CHCl
C. CCl₂=CCl₂
D. Chloroprene
Answer: D

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27. Polyethylene from 64.1 kg CaC₂ is

A. 7 kg
B. 14 kg
C. 21 kg
D. 28 kg
Answer: D

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28. CF₂=CF₂ polymerization gives

A. PMMA
B. PAN
C. PVC
D. None
Answer: D

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29. Another monomer giving neoprene

A. CH₂=CHCl
B. CCl₂=CCl₂
C. Chloroprene structure
D. CF₂=CF₂
Answer: C

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30. Which is a biopolymer?

A. Dexton
B. PCTFE
C. Nylon-6,6
D. Neoprene
Answer: A

In conclusion, Free Radical Polymerization MCQs Practice Set with Answers is an indispensable tool for mastering polymer chemistry. It not only strengthens conceptual understanding but also improves speed, accuracy, and analytical thinking. By consistently practicing Free Radical Polymerization MCQs Practice Set with Answers, students can achieve better results and gain confidence in tackling complex chemistry problems.