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Polymer Technology

Polymer Technology
Which of the following is generally not used as eord for synthetic rubber tyre casing?

Dacron
Cellulose
Nylon
None of these

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Polymer Technology
Benzoyl chloride is not used as a catalyst in the manufacture of

Polystyrene
Polypropylene
Polyvinyl acetate
Polyvinyl chloride-co-vinylacetate

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Polymer Technology
Polyesters are manufactured by the polycondensation reaction of

A single monomer
Dibasic acid with dihydric alcohol
Carboxylic acid with ethylene
Inorganic acid with ethylene glycol

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

Leathery
Fibrous
Hard
Rubbery

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Polymer Technology
Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their

Polymerisation mechanism
Molecular sizes
Resistance to heat
Magnitude of intermolecular forces

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Polymer Technology
Nylon-66 compared to nylon-6 has

Higher hardness
All of these
Lower melting point
More abrasion resistant properties

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