POLYMER TECHNOLOGY QUIZ

Which of the following types of polymers has the strongest inter particle forces?

Thermosetting polymers

Elastomers

Thermoplastics

Fibres

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Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m². Which of the following polymers has the maximum film elongation (of the order of 100%) ?

Polythene

Cellulose acetate

Water impermeable cellophane

Teflon

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Plasticisers are added to synthetic plastics to

Develop new improved properties not present in the original resin

Improve workability during fabrication

Impart flexibility

All of these

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Polycondensation reaction of polymerisation

Does not need any catalyst

Produces only thermoplastic material

Does not produce linear polymers

Produces epoxy polymers

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A copolymer is formed by the combination of two or more monomer molecules

None of these

Of the same monomer by elimination of small molecules of water

With the elimination of small amount of water

In a chain without the elimination of water

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Addition polymerisation takes place either by a free radical mechanism or ionic machanism depending on the reagents used. Free radical polymerisation is catelyzed by __________ , which decompose to give free radicals.

Hydroflouric acid

Sulphuric acid

Organic peroxides

None of these

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The monomer of natural rubber is

Both B and C

2 methyl-1-propene

DMT

Isoprene

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Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces

Polyamide

Alkyd resin

Phenolic resin

Epoxy resin

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The monomer for the production of neoprene rubber is

Isoprene

Acetylene

None of these

Chloroprene

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Styrene butadiene rubber (SBR) as compared to natural rubber has

Poorer resistance

Greater amount of heat build up heavy loading

All of these

Poor tensile strength

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