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Polymer Technology

Polymer Technology
The only natural thermoplastic resin, which is a product of animal life is

Shellac
Copal
Rosin
Amber

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

Pyridine
Naphthalene
Phenol
Benzene

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Polymer Technology
Which of the following is stretched into fibres?

Isoprene
Bakelite
Unsaturated polyester
Saturated polyester

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Polymer Technology
Softening point of high density polythene is about __________ °C.

165
135
85
205

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Polymer Technology
Mastication of rubber means

A treatment to retard its deterioration due to oxidation
Depression of its freezing point
Its softening
Improving its curing rate

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Polymer Technology
In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of

Polyesters
Cross linked polystyrene
Polyamides
Phenol formaldehyde resins

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