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categoryهندسة مواد
schoolبكالوريوس
event_available2026-07-14
السؤال
Transcribed Image Text:
Choose the most correct answer
Thermoplastic materials have many characteristics, except one of the following:
Select one:
a. The bond between the molecular is van der Waal's forces.
b. Soft and ductile.
c. Recyclable.
d. Linear polymers
e. They result from polymerisation where one of the molecules has a functionality of more than two.
Choose the most correct answer
Thermoplastic polymers have very low melting points due to:
Select one:
a. the weak Van Der Waal's intermolecular bond
b. that they do not form crystalline structure
c. low strain property
d. high tensile strength property
e. none of the above
Choose the most correct answer
The main function of the initiators in the addition polymerisation process is to:
Select one:
a. stabilise the mers and the ends of the growing polymers
b. reduce the melting point
c. strengthen the polymer
d. reduce the cost of the polymer
e. None of the above
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