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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.

250-280
500-600
-5
10-30

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Polymer Technology
Thermoplastic resins usually

Less brittle than thermosetting resins
Remain hard as long as they are hot
Can not be reclaimed from waste
Permanent setting resins

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Polymer Technology
In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher

Densities
Tensile strength
Hardness, rigidity & brittleness
Melting point

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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.

Thermoplastic
Elastometric
Brittleness
Thermosetting

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Polymer Technology
Maximum consumption of polymers is in

Toys making
Packaging
Coating and films
Electrical insulation

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Polymer Technology
Polymers are

Macromolecules
Micromolecules
Sub-micromolecules
None of these

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