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9. From which plastic material is thermocol made?
10. Which plastic material is used to make non-stick pans?
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9. Thermocol contains an important thermoplastic compound, called polystyrene which is obtained by the polymerisation of styrene or phenylethene.
10. Teflon is a trademark of DuPont for a plastic material known as polytetrafluoroethylene. The secret to Teflons slick surface lies in the fluorine enveloping its molecules.
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Answer:
9) polystyrene
10) polytetrafluoroethylene
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