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Polymer Technology

Polymer Technology
Polyvinyl acetate is never used for making

Fibres
Adhesives
All of these
Moulded articles

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Polymer Technology
Styrene butadiene rubber is commercially manufactured by

Suspension polymerisation
Solution polymerisation
Bulk polymerisation
Emulsion polymerisation

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Polymer Technology
In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry spinning is used for __________ fibres.

PVC
Polyvinyl acetate
Polythene
Rayon

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Polymer Technology
Addition of plasticisers to polymers results in partial neutralisation of intermolecular forces of attraction between the macro-molecules thereby increasing its

All of these
Tensile strength
Chemical resistance
Flexibility

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Polymer Technology
Flexible foam (for mattresses) are usually made of

PVC
Silicone rubber
Polyamides
Polyurethanes

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Polymer Technology
The conversion of caprolactum in the above case is about __________ percent.

90
70
25
50

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