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.
Assertion (A) Polyamides are best used as fibres because of high tensile strength.
Reason (R) Strong intermolecular forces (like hydrogen bonding within polyamides) lead to close packing of chains and increase the crystalline character, hence, provide high tensile strength to polymers.