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Which of the following polymers is commonly used as the coating material for non-stick cooking utensils?

1. Polyvinyl chloride
2. Polystyrene
3. Poly(ethylene terephthalate)
4. Polytetrafluoroethylene

Correct answer: Polytetrafluoroethylene

Solution

Polytetrafluoroethylene (PTFE) is widely recognized for its non-stick properties, making it an ideal choice for coating cookware, as it reduces friction and prevents food from sticking.

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