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Polymer Technology

Polymer Technology
Ebonite is a/an

Adhesive
Natural rubber
Highly vulcanised rubber
Unvulcanised raw rubber

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Polymer Technology
Which of the following is stretched into fibres?

Saturated polyester
Unsaturated polyester
Isoprene
Bakelite

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Polymer Technology
Nylon-66 is manufactured from

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

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Polymer Technology
Thermosetting resins/polymers as compared to thermoplastic ones are

Easily reshaped & reused
Formed by addition polymerisation only
Soluble in all organic solvents
More brittle

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Polymer Technology
In case of wet spinning of polymers, the polymer solution is forced through spinnerates into, a coagulating bath to give a filament form. Wet spinning is not used in case of the __________ fibres.

Polyvinyl acetate
Saturated polyester
Viscose rayon
Acrylic

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Polymer Technology
Size range of polymer molecules varies from __________ metre.

10⁻⁸ to 10⁻¹⁰
10⁻² to 10⁻⁵
10⁻⁴ to 10⁻⁷
10⁻¹ to 10⁻²

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