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Polymer Technology

Polymer Technology
Commercial production of polypropylene employs __________ polymerisation.

Solution
Bulk
Emulsion
Suspension

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Polymer Technology
Rayon is superior to cotton in making gauge for wound treatment, because rayon

Both B & C
Is a synthetic polymer
Does not stick to the wound unlike cotton
Can absorb over 90% of its own weight of water

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Polymer Technology
Polymethyl methacrylate, which is an acrylic resin, is also called

Dacron
Plexiglass or lucite
Thiokol
Teflon

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Polymer Technology
Low pressure Zeigler process of polythene manufacture

Employs a pressure of 30 kgf/cm²
Does not use any catalyst for polymerisation
Achieves an yield of 95-98% based on ethylene
Produces very low density polythene

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

Nitro cellulose
None of these
Camphor
Glycerol

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Polymer Technology
Main constituent of natural rubber is

Polybutadiene
Polyisoprene
Poly chloroprene
Polystyrene

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