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Q. No.
Subtopic: Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
58%
Level 3: 35%-60%
NEET - 2023
Hints
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 incorrect.
2. Statement I is incorrect but Statement II is correct.
3. Both Statement I and Statement II are correct.
4. Both Statement I and Statement II are incorrect.
| Statement I: | High density polythene is formed in the presence of catalyst triethylaluminium and titanium tetrachloride. |
| Statement 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 incorrect.
2. Statement I is incorrect but Statement II is correct.
3. Both Statement I and Statement II are correct.
4. Both Statement I and Statement II are incorrect.
Subtopic: Classification - Methods of Polymerization & Copolymerization |
59%
Level 3: 35%-60%
NEET - 2023
Hints
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 |
82%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Which among the following is a thermoplastic polymer?
1. Bakelite
2. Polythene
3. Urea-formaldehyde resin
4. Melamine polymer
1. Bakelite
2. Polythene
3. Urea-formaldehyde resin
4. Melamine polymer
Subtopic: Classification - Methods of Polymerization & Copolymerization |
67%
Level 2: 60%+
NEET - 2022
Hints
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 |
82%
Level 1: 80%+
NEET - 2022
Hints
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 |
69%
Level 2: 60%+
NEET - 2022
Hints
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%
Level 2: 60%+
NEET - 2021
Hints
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%
Level 2: 60%+
Hints
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 |
82%
Level 1: 80%+
Hints
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%
Level 1: 80%+
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