Science, asked by rishabh6117, 11 months ago

3 Plastics which when moulded once, cannot be softened by
heating. Such plastics are called -
a)Polythene b) Thermoplastics
c) Polyster
d) Thermosetting plastics

Answers

Answered by lanafathima
6

Answer:

Polyster

Explanation:

I think this the answer for the question

Answered by cherriecschan
3

Answer:

d)

Explanation:

The covalent bonds in this thermosetting plastic are strong and prevent the plastic melting when it is heated. The difference between thermoplastics and thermosetting plastics is that thermoplastics do not have cross links between the polymer molecules, while thermosetting plastics have links in between the polymer molecules, making the plastic much more resistant to higher temperatures.

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