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Polymer Technology

Polymer Technology
Tyres are made by

Injection moulding
Compression moulding
Extrusion
Rotational moulding

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Polymer Technology
Which of the following is the lowest cost plastic commercially available?

PVC
Bakelite
Teflon
Polythene

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Polymer Technology
Which of the following is stretched into fibres?

Bakelite
Saturated polyester
Isoprene
Unsaturated polyester

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Polymer Technology
Which of the following is not a natural polymer?

Polyurethane
Polyisoprene
Nucleic acids e.g. RNA and DNA
Polysaccharides

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Polymer Technology
Which of the following is a natural polyamide fibre.

Silk
Wool
Cotton
None of these

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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
Reacting ethylene oxide with acetal-dehyde
Catalytic dehydrogenation of ethyl benzene

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