Polymer Technology - Chemical Engineering Questions and Answers

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Which of the following polymers is used for making a non stick coating on frying pans ?

Bakelite

Teflon

Perspex

PVC

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Which of the following polymers does not belong to the class of polyacrylate polymer ?

PMMA

Polyacrylonitrile

Polyethyl acrylate

None of these

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Tyres are made by

injection moulding

extrusion

rotational moulding

compression moulding

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Addition of plasticisers to polymers results in partial neutralisation of intermolecular forces of attraction between the macro-molecules thereby increasing its

tensile strength

chemical resistance

flexibility

all (a), (b) & (c)

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Crystallisation of polymers is an undesirable property. Crystallisation of celluloid is prevented by adding

glycerol

nitro cellulose

camphor

none of these

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Phthalic anhydride is used

in making PVC

as plasticisers

in insecticides manufacture

for making nylon-6

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Polythene is a/an

addition polymerisation product.

condensation polymerisation product.

thermosetting material.

none of these.

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Synthetic polymer produced by using terephthalic acid and ethylene glycol is

terylene

nylon-66

PVC

polyesterene

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Catalyst used in the production of high density polythene by low pressure Ziegler process is

aluminium triethyl activated with TiCl₄

platinum

molybdenum

Nickel