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Q. No.| Statement I: | Natural rubber is a linear polymer of isoprene unit with cis isomer. |
| Statement II: | The polymer of isoprene is polar and has a coil-like structure. |
1. Statement I is correct only.
2. Statement II is correct only.
3. Both statements I and II are correct.
4. None of the Statements are correct.
Subtopic: Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
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Level 2: 60%+
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Which statement is correct ?
1. Synthesis of Buna-S needs nascent oxygen.
2. Neoprene is an addition copolymer used in plastic bucket manufacturing.
3. Buna-S is a synthetic and linear thermosetting polymer.
4. Buna-N is a natural polymer.
Subtopic: Classification - Methods of Polymerization & Copolymerization |
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Match Column I with Column II.
| Column I (Monomer Unit) |
Column II (Polymer) |
||
| (a) | Caprolactam | (i) | Natural rubber |
| (b) | 2-Chloro-1,3-butadiene | (ii) | Buna-N |
| (c) | Isoprene | (iii) | Nylon 6 |
| (d) | Acrylonitrile | (iv) | Neoprene |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (iii) | (ii) | (i) |
| 2. | (ii) | (i) | (iv) | (iii) |
| 3. | (iii) | (iv) | (i) | (ii) |
| 4. | (i) | (ii) | (iii) | (iv) |
Subtopic: Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
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Level 1: 80%+
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The polymers is not obtained by condensation polymerisation among the following is-
1. Buna - N
2. Bakelite
3. Nylon 6
4. Nylon 6, 6
Subtopic: Classification - Methods of Polymerization & Copolymerization |
66%
Level 2: 60%+
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Select the correct option based on statements below:
| Assertion (A): | Ethene polymerized in the presence of Ziegler Natta catalyst at high temperature and pressure is used to make buckets and dustbins |
| Reason (R): | High density polymers are closely packed and are chemically inert. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Application of Polymers |
65%
Level 2: 60%+
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The correct match between Item-I and Item-II :
| Item-I | Item-II | ||
| (a) | Natural rubber | (I) | 1,3-butadiene + styrene |
| (b) | Neoprene | (II) | 1,3-butadiene + acrylonitrile |
| (c) | Buna-N | (III) | Chloroprene |
| (d) | Buna-S | (IV) | Isoprene |
Options:
| (a) | (b) | (c) | (d) | |
| 1. | (III) | (IV) | (I) | (II) |
| 2. | (IV) | (III) | (II) | (I) |
| 3. | (IV) | (III) | (I) | (II) |
| 4. | (III) | (IV) | (II) | (I) |
Subtopic: Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
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Subtopic: Classification - Methods of Polymerization & Copolymerization |
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Level 3: 35%-60%
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The correct match between Item-I and Item-II is :
| Item - I | Item - II | ||
| (a) | High density polythene | (I) | Peroxide catalyst |
| (b) | Polyacrylonitrile | (II) | Condensation at high temperature & pressure |
| (c) | Novolac | (III) | Ziegler-Natta Catalyst |
| (d) | Nylon 6 | (IV) | Acid or base catalyst |
| (a) | (b) | (c) | (d) | |
| 1. | (IV) | (II) | (I) | (III) |
| 2. | (III) | (I) | (IV) | (II) |
| 3. | (II) | (IV) | (I) | (III) |
| 4. | (III) | (I) | (II) | (IV) |
Subtopic: Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
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The correct name of the following polymer is :
1. Polytert-butylene
2. Polyisobutane
3. Polyisobutylene
4. Polyisoprene
Subtopic: Classification - Methods of Polymerization & Copolymerization |
Level 3: 35%-60%
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Which of the following statements about low-density polythene is FALSE?
| 1. | Its synthesis requires high pressure. |
| 2. | It is a poor conductor of electricity. |
| 3. | Its synthesis requires dioxygen or a peroxide initiator as a catalyst. |
| 4. | It is used in the manufacture of buckets, dustbins, etc. |
Subtopic: Application of Polymers |
66%
Level 2: 60%+
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