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Which one of the following is used to make "non-stick" cook-wares?

1. Polystyrene
2. Polyethylene terephthalate
3. Polytetrafluoroethylene
4. Polyvinyl chloride

Correct answer: Polytetrafluoroethylene

Solution

Polytetrafluoroethylene (PTFE), commonly known as Teflon, is used to make non-stick cookware due to its high heat resistance and non-reactive, non-stick properties.

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