3. Which of the following is used to make light weight, but strong plastic ? A.Nylon B.Polythene C.Polyvinyl Chloride D.Methyl Methacrylate
Answer: Option C Solution: Polyvinyl chloride (PVC) is a common, strong but lightweight plastic that is used in making tough plastic. It is used for flexible applications such as insulating cables. It is the third-most widely produced synthetic plastic polymer, after polyethylene and polypropylene.