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Polymer Technology

Polymer Technology
__________ polymer is produced by the copolymerisation of vinyl chloride-vinyl acetate.

Rubbery
Leathery
Fibrous
Hard

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Polymer Technology
Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation?

Epoxy resin
PTFE
PVC
Bakelite

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Polymer Technology
Epoxy resin is

A good abrasive
A polyester
Not used for surface coating
An elastomer

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Polymer Technology
Flexible plastic pipes are made of

High density polyethylene (HDPE)
Polypropylene
Unsaturated polyester
Low density polyethylene (LDPE)

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

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

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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.

Thermosetting
Brittleness
Thermoplastic
Elastometric

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