 
			 
			MCQOPTIONS
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				| 1. | Why is vinyl polymerization also known as addition polymerization? | 
| A. | monomers are unsaturated compounds | 
| B. | it is a chain reaction | 
| C. | most monomers contain (CH<sub>2</sub>=CH─) group | 
| D. | it proceeds through radical | 
| Answer» D. it proceeds through radical | |