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Polymer Technology

Polymer Technology
Rain coats are made of

PVC
SBR
Polyurathane
Neoprene

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Polymer Technology
Which of the following additives are added to plastics to make it impervious to X-rays?

Carborundum
Phthalic acid
Barium salt
Asbestos

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Polymer Technology
Polyurathane can not be used to make

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

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Polymer Technology
Thermosplastic materials

Are heavily branched molecules
Do not soften on application of heat
None of these
Are solvent insoluble

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Polymer Technology
Cellulose is the main contituent of most __________ fibres.

Spandex
Acrylic
Synthetic
Natural

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Polymer Technology
Properties of a polymer is affected by the

Intermolecular forces
Branching & cross-linking
Chain length
All of these

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