Transistor parts and refrigerator components are normally made of_____________________?
Correct answer: A. Polystyrene
- A. Polystyrene
- B. Polyester
- C. High density polythene
- D. Polyurethane
Explanation
Polystyrene is a lightweight thermoplastic used for electrical and transistor components, as well as insulation and molded parts in refrigerators. Polyester and polyurethane have other important uses, but polystyrene is the conventional choice here.
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