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Polymer Technology

Polymer Technology
__________ is normally used for the manufacture of refrigerator components and transistor parts.

Polyurathene
Polystyrene
Polyester
Polyproylene

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Polymer Technology
A copolymer of vinyl and vinylidine chloride is called

Orlon
Dacron
Saran
Treylene

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

0.91
0.38
0.81
0.56

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Polymer Technology
Condensation polymerisation of caprolac-tum is carried out in the reactor maintained at a temperature of __________ °C for producing nylon-6.

-20 to 25
100 to 150
50 to 75
250-280

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Polymer Technology
Main constituent of natural rubber is

Polystyrene
Poly chloroprene
Polybutadiene
Polyisoprene

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

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

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