………… is used to prepare polyvinyl chloride
Polymer: When many monomers [single unit] are combined with each other then polymers [many units] are formed
Example – polyvinyl chloride [PVC], Rubber, etc.
Polyvinyl chloride[ PVC] : It is a polymer of ethylene chloride, when many ethylene chlorides are combined with each other then PVC is formed.
Hence, Ethylene chloride is used to prepare polyvinyl chloride