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Polymer Technology

Polymer Technology
β - glucose is the monomer of

Protein
None of these
Starch
Cellulose

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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
Magnitude of intermolecular forces
Resistance to heat

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Polymer Technology
Viscosity of a polymer solution or melt

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

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Polymer Technology
__________ is a thermosetting plastic.

Polythene
PVC
Bakelite
Polystyrene

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Polymer Technology
In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross-linked polymer?

Polyester
Polythene
Bakelite (phenol formaldehyde)
Nylon-6

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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

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

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