Q. Thermoplastic materials are those materials which
A) Are flexible and can withstand considerable wear under suitable conditions
B) Do not become hard with the application of heat and pressure and no chemical change occurs
C) Are used as a friction lining for clutches and brakes
D) Are formed into shape under heat and pressure and results in a permanently hard product
✔ Correct Answer: Do not become hard with the application of heat and pressure and no chemical change occurs
Exam Insight
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