Which amongst the following molecules on polymerization produces neoprene? 
1. 2.
3. 4.
Subtopic:  Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
 60%
From NCERT
NEET - 2023
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Given below are two statements:
 
I: High density polythene is formed in the presence of catalyst triethylaluminium and titanium tetrachloride.
II: High density polymers are chemically inert.  

In the light of the above statements, choose the correct answer from the options given below:
1. Statement-I is correct but Statement-II is false. 
2. Statement-I is incorrect but Statement-II is true.
3. Both Statement-I and Statement- II are true.
4. Both Statement-I and Statement-II are false.
Subtopic:  Classification - Methods of Polymerization & Copolymerization |
 65%
From NCERT
NEET - 2023
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Which statement regarding polymers is not correct?
1. Thermosetting polymers are reusable 
2. Elastomers have polymer chains held together by weak intermolecular forces 
3. Fibers possess high tensile strength
4. Thermoplastic polymers are capable of repeatedly softening and hardening on heating and cooling respectively
Subtopic:  Classification - Methods of Polymerization & Copolymerization |
 71%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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Match list-I with list-II:

List-I
(Monomers)
List-II
(Polymers)
(a) Caprolactam (i) Bakelite
(b) Ethylene glycol and Benzene-1, 4-dicarboxylic acid (ii) Nylon 6, 6
(c) Hexamethylenediamine and adipic acid (iii) Nylon-6
(d) Phenol and Formaldehyde (iv) Terylene
Choose the correct answer from the options given below:
(a) (b) (c) (d)
1. (ii) (iii) (iv) (i)
2. (i) (ii) (iii) (iv)
3. (iii) (iv) (ii) (i)
4. (iv) (ii) (i) (iii)
Subtopic:  Classification - Methods of Polymerization & Copolymerization | Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
 84%
From NCERT
NEET - 2022
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Which among the following is a thermoplastic polymer?

1.  Bakelite
2.  Polythene
3.  Urea-formaldehyde resin
4.  Melamine polymer
Subtopic:  Classification - Methods of Polymerization & Copolymerization |
 69%
From NCERT
NEET - 2022
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Which one of the following polymers are prepared by addition polymerization?
1. Novolac 
2. Dacron 
3. Teflon 
4. Nylon-66 

Subtopic:  Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
 69%
From NCERT
NEET - 2021
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The natural polymer among the following options is: 

1. Poly(Butadiene-styrene)

2. Polybutadiene

3. Poly(Butadiene-acrylonitrile)

4. Cis-1,4-polyisoprene

Subtopic:  Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
 78%
From NCERT
NEET - 2020
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 The correct statement regarding Bakelite is : 

1. It is a cross linked polymer.

2. It is an additional polymer.

3. It is a branched chain polymer.

4. It is a linear polymer.

Subtopic:  Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
 73%
From NCERT
NEET - 2020
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The biodegradable polymer is:

1. Buna-S

2. Nylon-6, 6

3. Nylon 2-nylon 6

4. Nylon-6

Subtopic:  Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
 77%
From NCERT
NEET - 2019
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The polymer that is used as a substitute for wool in making commercial fibres is -

1. Melamine

2. Nylon-6, 6

3. Polyacrylonitrile

4. Buna-N
 

Subtopic:  Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
 65%
From NCERT
NEET - 2019
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NEET 2023 - Target Batch - Aryan Raj Singh
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