158. Which one of the following cannot be moulded again
as desired?
(a) Nylon
(b) Polythene
(c) Bakelite
(d) Teflon
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Answer:
Polythene.
Explanation:
Polythene is a thermoplastic polymer consisting of long hydrocarbon chains. Thermoplastic polymers can be repeatedly heated and moulded into any desired shape.
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