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Q. No.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 |
68%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
The monomeric units of Dacron polymer are:
1. Melamine and formaldehyde
2. Ethylene glycol and phthalic acid
3. Ethylene glycol and terephthalic acid
4. Hexamethylenediamine and adipic acid
1. Melamine and formaldehyde
2. Ethylene glycol and phthalic acid
3. Ethylene glycol and terephthalic acid
4. Hexamethylenediamine and adipic acid
Subtopic: Classification - Methods of Polymerization & Copolymerization |
85%
From NCERT
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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 |
| (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 |
83%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
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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NEET 2023 - Target Batch - Aryan Raj Singh
Subtopic: Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
61%
From NCERT
NEET - 2023
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Given below are two statements:
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.
| 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 |
63%
From NCERT
NEET - 2023
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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 |
68%
From NCERT
NEET - 2021
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
The incorrect statement regarding condensation polymer is:
| 1. | Reaction occurs between two different bi-functional or tri-functional monomers. |
| 2. | Elimination of small molecules like water ammonia etc, takes place. |
| 3. | Nylon 6,6 is an example of condensation polymer. |
| 4. | Elimination of large molecules like butanol takes place. |
Subtopic: Classification - Methods of Polymerization & Copolymerization |
77%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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The common chain initiator amongst the following in a free radical reaction is :
1. Benzoyl peroxide.
2. Ozone.
3. Chlorine.
4. None of the above.
Subtopic: Classification - Methods of Polymerization & Copolymerization |
83%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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The salient feature of biodegradable polymer is:
1. Polymer that can be decomposed.
2. Polymer that cannot be decomposed.
3. Polymer that can be denatured.
4. Polymer that cannot be denatured.
Subtopic: Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
87%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
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