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Polymer Technology

Polymer Technology
90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at a temperature of __________ °C.

10-30
500-600
-5
250-280

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Polymer Technology
Styrene which is a monomer for the production of polystyrene, is commercially produced by the

Reacting ethylene oxide with acetal-dehyde
Dehydration of ethyl alcohol followed by hydrogenation
Catalytic dehydrogenation of ethyl benzene
Fermentation of starch

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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
__________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine.

Phenolic
Alkyd
Epoxy
Amino

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Polymer Technology
Thermocole is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten

Polystyrene
Either B or C
Polyurathane
Saturated polyester

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Polymer Technology
Molecular weight of polymers are in the range of

10⁷-10⁹
10 to 10³
10²-10⁷
10⁹-10¹¹

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