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Engineering Materials

Q1:

Thermoplastic materials are those materials which

A are formed into shape under heat and pressure and results in a permanently hard product

B do not become hard with the application of heat and pressure and no chemical change occurs

C are flexible and can withstand considerable wear under suitable conditions

D are used as a friction lining for clutches and brakes

ANS:B - do not become hard with the application of heat and pressure and no chemical change occurs

Explanation: No answer description is available. 



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