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Thermosetting Plastic

Thermosetting...

Question

Thermosetting plastics are strong, durable and can be remoulded by heating them.

A

True

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B

False

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Solution

The correct option is B False
Thermosetting plastics are those plastics which once moulded cannot be remoulded by heating. They are strong, durable and resists heat to a large extent. The well known examples are bakelite and melamine.

On the other hand, thermoplastics can be repeatedly moulded if they are heated above a specific temperature. For example, PVC, nylon, etc.

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Similar questions

Q. Assertion - Thermosetting plastics cannot be remoulded on heating.

Reason - Formation of strong cross-links during initial moulding gives thermosetting plastics a strong structure.

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. The plastics that can be remoulded on heating are called _______ and those which cannot be remoulded are called _______.

Q. Plastics that can be melted on heating and remoulded easily are known as .

Q. Which of the following properties of plastic make them as material of choice?
A) Plastics are non-reactive and non-corrosive.
B) Plastic are strong and durable.
C) Plastic materials are soft and flexible.
D) Plastics are poor conductors of heat and electricity.

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