Match 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. | Neoprene |
| C. | Ropes and fibres | 3. | Dacron |
| D. | Polyester fabric | 4. | Melamine formaldehyde resins |
| E. | Synthetic rubber | 5. | Urea-formaldehyde resins |
| F. | Unbreakable crockery | 6. | cis-polyisoprene |
A. $\rightarrow$ (6) B. $\rightarrow$ (5) C. $\rightarrow$ (1) D. $\rightarrow(3)$ E. $\rightarrow$ (2) F. $\rightarrow$ (4)
Column I represents various uses or precursurs of polymers and Column II represents name of related polymer. The correct matching can be done as
| Column I | Column II | ||
|---|---|---|---|
| A. | Natural rubber latex | 1. | cis-polyisoprene |
| B. | Wood laminates | 2. | Urea-formaldehyde resins |
| C. | Ropes and fibres | 3. | Nylon |
| D. | Polyester fabric | 4. | Dacron |
| E. | Synthetic rubber | 5. | Neoprene |
| F. | Unbreakable crockery | 6. | Melamine formaldehyde resins |
Match the polymers given in Column I with their repeating units given in Column II.
| Column I | Column II | ||
|---|---|---|---|
| A. | Acrilan | 1. |  |
| B. | Polystyrene | 2. |  |
| C. | Neoprene | 3. |  |
| D. | Novolac | 4. |  |
| E. | Buna-N | 5. |  |
| 6. |  |
A. $\rightarrow(4)$ B. $\rightarrow$ (1) C. $\rightarrow(2)$ D. $\rightarrow$ (4) E. $\rightarrow(3)$
Column I represents name of polymer and Column II represents their molecular formula. The correct matching can be done as
| Column I | Column II | ||
|---|---|---|---|
| A. | Acrilan | 1. |  |
| B. | Polystyrene | 2. |  |
| C. | Neoprene | 3. |  |
| D. | Novolac | 4. |  |
| E. | Buna-N | 5. |  |
Assertion (A) Rayon is a semisynthetic polymer and is taken as a better choice than cotton fabric.
Reason (R) Mechanical and aesthetic properties of cellulose can be improved by Acetylation.
Assertion (A) Most of the synthetic polymers are not biodegradable.
Reason (R) Polymerisation process induces toxic character in organic molecules.
Assertion (A) Olefinic monomers undergo addition polymerisation.
Reason (R) Polymerisation of vinyl chloride is initiated by peroxides/persulphates.