MCQOPTIONS
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MCQOPTIONS
| 1. |
What is the composition of copolymer formed by the copolymerization of 60% vinyl acetate and 40% vinyl chloride at 60ᵒC, given that r1=0.23 and r2=1.68?# |
| A. | 0.39 |
| B. | 0.78 |
| C. | 0.63 |
| D. | cannot be determined |
| Answer» B. 0.78 | |