Question

plastic which when moulded ones ,cannot be softed by heating. ​

Answer 1

Answer:

thermosetting plastic

A plastic which once set,does not become soft on heating and cannot be moulded a second time,is called thermosetting plastic. Once set in a given shape and solidified,a thermosetting plastic cannot be re-softened or re-moulded.

Explanation:

hope it's helps you ✌️