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Polymer Technology

Polymer Technology
Tyres are made by

Rotational moulding
Extrusion
Compression moulding
Injection moulding

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Polymer Technology
Vulcanisation of raw rubber makes it

Tacky
Plastic
Less elastic
Soft

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Polymer Technology
Poly Vinyl chloride (PVC) is a __________ material.

Fibrous
Thermoplastic
Thermosetting
Chemically active

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Polymer Technology
Polyurathane can not be used to make

Thermal insulation in refrigerator
Coating and adhesive
Fibre reinforced plastic (FRP)
Automobile cushion

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Polymer Technology
Which of the following polymers has the tendency of decomposing before melting?

Polystyrene
None of these
PVC
Nylon

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Polymer Technology
Density of low density polythene is about __________ gm/c.c.

0.38
0.91
0.81
0.56

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