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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 | |