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Polymer Technology

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

Fibrous
Thermoplastic
Thermosetting
Chemically active

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Polymer Technology
Cross linked polymers formed from bi-and trifuctional groups in which cross-linkage in three dimensions via few chemical bonding across linear chains occur imparts to the polymer __________ properties.

Elastometric
Thermosetting
Thermoplastic
Brittleness

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Polymer Technology
Rain coats are made of

Polyurathane
Neoprene
SBR
PVC

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Polymer Technology
__________ polythene is most prone to stress-cracking

Cross-linked
Linear low density
Low density
High density

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Polymer Technology
Nylon-66 is manufactured from

Maleic anhydride and hexamethylene diamine
Adipic acid and hexamenthylene diamine
Caprolactum
Dimethyl terephthalate (DMT) and ethylene glycol

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Polymer Technology
__________ are produced by reacting polybasic acid (e.g. phthalic anhydride) with polyhydric alcohol (e.g., glycerol).

Amino resins
Unsaturated polyester
Saturated polyester
Alkyd resins

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