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Q. No.Select the correct option based on statements below:
Assertion (A):
Polyamides are best used as fibers because of their high tensile strength.
Reason (R):
Strong intermolecular forces (like hydrogen bonding within polyamides) lead to close packing of chains and increase the crystalline character.
1.
Both (A) and (R) are true but (R) is not the correct explanation of (A).
2.
Both (A) and (R) are true and (R) is the correct explanation of (A).
3.
(A) is true but (R) is false.
4.
(A) is false but (R) is true.
Subtopic: Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
57%
Level 3: 35%-60%
Hints
Select the correct option based on statements below:
| Assertion (A): | For making rubber synthetically, isoprene molecules are polymerized. |
| Reason (R): | Neoprene (a polymer of chloroprene) is a synthetic rubber. |
| 1. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 2. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 3. | (A) is false but (R) is true. |
| 4. | (A) is true but (R) is false. |
Subtopic: Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
Level 3: 35%-60%
Hints
Select the correct option based on statements below:
| Assertion (A): | Network polymers are thermosetting. |
| Reason (R): | Network polymers have a high molecular mass. |
| 1. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 2. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 3. | Both (A) and (R) are false. |
| 4. | (A) is true but (R) is false. |
Subtopic: Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
63%
Level 2: 60%+
Hints
Select the correct option based on statements below:
| Assertion (A): | Polytetrafluoroethylene is used in making non-stick cookware. |
| Reason (R): | Fluorine has the highest electronegativity. |
| 1. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 2. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 3. | Both (A) and (R) are false. |
| 4. | (A) is true but (R) is false. |
Subtopic: Application of Polymers |
67%
Level 2: 60%+
Hints
Select the correct option based on statements below:
| Assertion (A): | Olefinic monomers undergo addition polymerization. |
| Reason (R): | Polymerisation of vinyl chloride is initiated by peroxides/persulphates. |
| 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. | (A) is false but (R) is true. |
Subtopic: Classification - Methods of Polymerization & Copolymerization |
Level 3: 35%-60%
Hints
Select the correct option based on statements below:
| Assertion (A): | Most of synthetic polymers are not biodegradable. |
| Reason (R): | The polymerization process induces toxic character in organic molecules. |
| 1. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 2. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 3. | Both (A) and (R) are false. |
| 4. | (A) is true but (R) is false. |
Subtopic: Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
Level 3: 35%-60%
Hints
Match the materials given in Column I with the polymers given in Column II.
| Column I | Column II |
| A. Natural rubber latex | 1. Nylon |
| B. Wood laminates | 2. Dacron |
| C. Ropes and fibers | 3. Urea-formaldehyde resins |
| D. Polyester fabric | 4. cis-polyisoprene |
Codes
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 3 | 4 | 1 | 2 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 3 | 1 | 2 |
Subtopic: Application of Polymers |
88%
Level 1: 80%+
Hints
Match the following:
| Column I | Column II |
| A. Bakelite | 1. Squeeze bottles |
| B. Low-density polyethylene | 2. Unbreakable crockery |
| C. Melamine-formaldehyde resin | 3. Tyre, cords |
| D. Nylon- 6 | 4. Electrical switches |
Codes
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 4 | 1 | 2 | 3 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 3 | 2 | 1 |
Subtopic: Application of Polymers |
75%
Level 2: 60%+
Hints
Match the polymers given in Column I with their commercial names given in Column II.
| Column I | Column II |
| A. Polyester of glycol and phthalic acid | 1. Novolac |
| B. Copolymer of 1, 3-butadiene and styrene | 2. Glyptal |
| C. Phenol and formaldehyde resin | 3. Buna-S |
| D. Copolymer of 3-butadiene and acrylonitrile | 4. Buna-N |
Codes
| A | B | C | D | |
| 1. | 2 | 3 | 1 | 4 |
| 2. | 3 | 1 | 4 | 2 |
| 3. | 2 | 4 | 3 | 1 |
| 4. | 4 | 3 | 2 | 1 |
Subtopic: Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
86%
Level 1: 80%+
Hints
Match the polymers given in Column I with their chemical names given in Column II.
| Column I | Column II |
| A. Nylon-6 | 1. Polyvinyl chloride |
| B. PVC | 2. Polyacrylonitrile |
| C. Acrilan | 3. Polycaprolactum |
| D. Natural rubber | 4. cis-polyisoprene |
Codes
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 3 | 1 | 2 | 4 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 3 | 2 | 1 |
Subtopic: Classification - Methods of Polymerization & Copolymerization |
92%
Level 1: 80%+
Hints
Select Chapter Topics:
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