Poly vinyl chloride, a plastic can be moulded and remoulded into vario

1.	Poly vinyl chloride, a plastic can be moulded and remoulded into various shapes by heating but melamine cannot be moulded a second time. give reason
Answer» $\rm\huge\underline{Answer}$ the BRANCH of science concerned with the substances of which matter is composed, the INVESTIGATION of their properties and reactions, and the use of such reactions to form NEW substances.

Poly vinyl chloride, a plastic can be moulded and remoulded into various shapes by heating but melamine cannot be moulded a second time. give reason

Answer»

$\rm\huge\underline{Answer}$

the BRANCH of science concerned with the substances of which matter is composed, the INVESTIGATION of their properties and reactions, and the use of such reactions to form NEW substances.

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Poly vinyl chloride, a plastic can be moulded and remoulded into various shapes by heating but melamine cannot be moulded a second time. give reason

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