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Thermosetting Plastics

Thermoplastic...

Question

Thermoplastic can be moulded to the desired shape again and again where thermosetting plastics will not change its shape on heating.

A

True

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B

False

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Solution

The correct option is A
True

The plastic that can be moulded as we desire is called thermoplastic. Eg. Polythene, PVC.

Thermosetting plastics can't change the shape they were moulded by heating. Thus they are used for electric switches, handles of kitchen appliances.

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Similar questions

Q. Statement I: Elastomers are not very strong and stretchable.
Statement II: Thermosetting plastics can be deformed and moulded into different shapes on heating.

Q. One characteristic of thermosets is that ___________.
(a) they become soft on cooling
(b) they become hard after heating
(c) they can be repeatedly remoulded into desired shapes
(d) they become soft again and again on reheating

Q. Which of these plastics can be repeatedly heated and moulded into any desired shape?
(a) bakelite
(b) polythene
(c) formica
(d) melamine

Which of the following statements regarding thermoplastics and thermosetting plastics is/are true?

	Thermoplastics	Thermosetting plastics
A	Soft	Hard
B	Able to withstand heat	Cannot withstand heat
C	No cross-linkages	Cross-linkage present

Q. A. Bakelite is a thermosetting polymer.
R. It can be melted again and again without any change.

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