<P> Given below is the list of suitable plastic raw materials for pyrolysis: </P> <Ul> <Li> Mixed plastic (HDPE, LDPE, PE, PP, Nylon, Teflon, PS, ABS, FRP etc .) </Li> <Li> Mixed - waste plastic from waste paper mill </Li> <Li> Multi-layered plastic </Li> </Ul> <Li> Mixed plastic (HDPE, LDPE, PE, PP, Nylon, Teflon, PS, ABS, FRP etc .) </Li> <Li> Mixed - waste plastic from waste paper mill </Li>

What class of polymers are easily recycled and what class are not . explain why