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Polymer Technology

Polymer Technology
The organic acid monomer in nylon 66 is

Benzoic acid
Adipic acid
Terephthalic acid
Sebasic acid

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Polymer Technology
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
All of these
Flexibility

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Polymer Technology
Neoprene which is used for making shoe heels & belts is superior to natural rubber in its stability to aerial oxidation and resistance to oils & other solvents. The monomer used for making neoprene is

Chlorophrene
None of these
Chloroethane
Isoprene

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Polymer Technology
__________ is a thermosetting plastic.

Bakelite
PVC
Polystyrene
Polythene

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Polymer Technology
Which of the following has the weakest intermolecular forces?

Bakelite
Polyisoprene
Nylon-66
Polystyrene

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Polymer Technology
Condensation polymerisation of __________ produces bakelite.

Phenol & formaldehyde
Propylene
Phenol & acetaldehyde
Urea & formaldehyde

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