MCQOPTIONS
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| 1. |
When condensation product of hexamethyiene- diamine and adipic acid is heated to 525 K in an atmosphere of nitrogen for about 4-5 hours, the product obtained is |
| A. | solid polymer of nylon 6, 6 |
| B. | liquid polymer of nylon 6, 6 |
| C. | gaseous polymer of nylon 6, 6 |
| D. | liquid polymer of nylon 6 |
| Answer» C. gaseous polymer of nylon 6, 6 | |