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Q: Which of the following non-metallic materials are also known as thermo softening plastic?
  • A. Elastomers
  • B. Thermoplastics
  • C. Thermoset materials
  • D. Minerals
Correct Answer: Option B - Thermoplastic materials are those which soften on the application of heat, with or without pressure and require cooling to be set to a shape. • They can be heated and cooled any number of times, only they should not be heated above their decomposition temperatures. • They are highly plastic and are easy for moulding or shaping.
B. Thermoplastic materials are those which soften on the application of heat, with or without pressure and require cooling to be set to a shape. • They can be heated and cooled any number of times, only they should not be heated above their decomposition temperatures. • They are highly plastic and are easy for moulding or shaping.

Explanations:

Thermoplastic materials are those which soften on the application of heat, with or without pressure and require cooling to be set to a shape. • They can be heated and cooled any number of times, only they should not be heated above their decomposition temperatures. • They are highly plastic and are easy for moulding or shaping.