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Polymer Technology

Polymer Technology
Polypropylene compared to polythene is

All of these
Stronger
Lighter
Harder

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Polymer Technology
Collapsible tubes for tooth paste are produced by __________ extrusion.

None of these
Indirect
Impact
Direct

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Polymer Technology
Most of the plastics are safe to be used upto a maximum temperature of __________ °C.

150
100
350
450

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Polymer Technology
__________ polymer is produced by the copolymerisation of vinyl chloride-vinyl acetate.

Leathery
Hard
Fibrous
Rubbery

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Polymer Technology
__________ is a natural fibre.

None of these
Cellulose
Nylon-6
Dacron

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Polymer Technology
Condensation of bisphenol A with phosgene produces __________ which possess very good heat resistance.

Polysulphone
Polyester
Polycarbonate
Polyurathane

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