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 |
| Column I | Column II |
| A. Polyester of glycol and phthalic acid B. Copolymer of 1,3-butadiene and styrene C. Phenol and formaldehyde resin D. Copolymer of 3-butadiene and acrylonitrile |
Glyptal Buna-S Novolac Buna-N |
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