NEET Previous Year Questions (2014-20): Polymers Notes | EduRev

NEET: NEET Previous Year Questions (2014-20): Polymers Notes | EduRev

The document NEET Previous Year Questions (2014-20): Polymers Notes | EduRev is a part of the NEET Course Chemistry 31 Years NEET Chapterwise Solved Papers.
All you need of NEET at this link: NEET

Q.1. Which one of the following polymers are prepared by addition polymerization?      (2021)
(a) Novolac
(b) Dacron
(c) Teflon
(d) Nylon-66
Ans: 
C
Solutions:
Teflon are prepared by addition polymerisation from tetrafluroethene.

Nylon-66, Novolac, Dacron are prepared by condensation polymerisation.

Q.2. Which of the following is a natural polymer?      (2020)
A: polybutadiene 

B: poly (Butadiene-acrylonitrile) 
C: cis-1,4-polyisoprene 
D: poly (Butadiene-styrene)
Ans: 
C
Solution:


Q.3. The biodegradable polymer is:     (2019)
A: Nylon-6,6
B: Nylon-2-Nylon 6
C: Nylon-6
D: Buna-S

Ans: B

Q.4. Regarding cross-linked or network polymers, which of the following statements is incorrect?    (2018)
A: They contain covalent bonds between various linear polymer chains.
B: They are formed from bi-and tri-functional monomers.
C: Examples are bakelite and melamine.
D: They contain strong covalent bonds in their polymer chains.
Ans:
D
Solution:

Cross-linked or network polymers are usually formed from bi-functional & tri-functional monomers and contains strong covalent bond between various linear polymer chains like Melamine, Bakelite etc.

Q.5. Natural rubber has:    (2016)
A: Random cis - and trans-configuration
B: All cis-configuration
C: All trans-configuration
D: Alternate cis - and trans - configuration
Ans: 
B
Solution:

The repeating unit in natural rubber has the cis-configurations with chain extensions on the same side of the ethylene double bond, which is essential for elasticity. If the configuration is trans, the polymer is hard plastic.

All cis-configuration.

Q.6. Biodegradable polymer which can be produced from glycine and aminocaproic acid is:    (2015)
A: Nylon 6, 6
B: Nylon 2 – nylon 6
C: PHBV
D: Buna – N
Ans:
B
Solution:

Nylon-2-nylon-6 or Nylon-2,6 is an alternating polyamide co-polymer of glycine and amino caproic acid.



Q.7. Which of the following organic compounds polymerizes to form the polyester Dacron?   (2014)
A: Terephthalic acid and ethylene glycol
B: Benzoic acid and para HO − (C6H4) − OH
C: Propylene and para HO − (C6H4) − OH
D: Benzoic acid and ethanol
Ans: 
A
Solution:



Q.8. Which one of the following is an example of a thermosetting polymer ?    (2014)
A:


B:


C:


D:


Ans: 
B
Solution:
Bakelite is a thermosetting polymer

The document NEET Previous Year Questions (2014-20): Polymers Notes | EduRev is a part of the NEET Course Chemistry 31 Years NEET Chapterwise Solved Papers.
All you need of NEET at this link: NEET

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