MCQOPTIONS
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| 1. |
Plexiglass (also called lucite) because of its high optical transparency is used for making lenses. It is chemically%! |
| A. | Polymethyl methacrylate (PMMA) |
| B. | Polytetraflouroethylene(PTFE) |
| C. | Polycarbonates |
| D. | Phenolic resins |
| Answer» B. Polytetraflouroethylene(PTFE) | |