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Polymer Technology

Polymer Technology
Caprolactum, a raw material for the manufacture of nylon-6, is produced from

Pyridine
Naphthalene
Benzene
Phenol

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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
250-280
-5
500-600

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Polymer Technology
Viscosity of a polymer solution or melt

Decreases with increase in temperature
Decreases with increase in molecular weight
Does not vary with temperature rise
Increases with increase in temperature

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Polymer Technology
Which of the following additives are added to plastics to make it impervious to X-rays?

Phthalic acid
Barium salt
Asbestos
Carborundum

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

Hard
Leathery
Rubbery
Fibrous

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Polymer Technology
Which of the following has the weakest intermolecular forces?

Polystyrene
Nylon-66
Polyisoprene
Bakelite

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