Q. Thermoplastic materials are those materials which?

A
do not become hard with the application of heat and pressure and no chemical change occurs
B
become hard with the application of heat and pressure and no chemical change occurs
C
become soft with the application of heat and pressure and no chemical change occurs
D
None of the above
Solution:

Thermoplastic materials are those materials which do not become hard with the application of heat and pressure and no chemical change occurs.

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