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Polymer Technology

Polymer Technology
Cellulose content in bomboo fibre is about __________ percent.

20
50
10
85

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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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Polymer Technology
SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at

1:3
3:1
1:2
2:1

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Polymer Technology
Neoprene is rendered non-inflammable, because of

The presence of chlorine atoms in its monomer
Its cross-linked structure
Its linear chain structure
The absence of chlorine atoms in its monomer

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Polymer Technology
Bristles of tooth brushes are made of

Nylon-66
Nylon-6
Polystyrene
PVC

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Polymer Technology
Lavatory cisterns are normally made of

Perspex
Expanded polystyrene
PVC
Saturated polyester

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