Sawaal
2
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) Are flexible and can withstand considerable wear under suitable conditions
C) Are formed into shape under heat and pressure and results in a permanently hard product D) Are used as a friction lining for clutches and brakes

Answer:   A) Do not become hard with the application of heat and pressure and no chemical change occurs



Explanation:

Thermoplastic materials is a type of plastic material that can be cooled and heated several times without any change in their chemistry or mechanical properties.

 

Examples of Thermoplastic ::

 

  • polyethylene,
  • polypropylene,
  • polyvinyl chloride,
  • polystyrene,
  • polybenzimidazole,
  • acrylic,
  • nylon and
  • teflon
Subject: Physics
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