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Polymer Technology

Polymer Technology
Zeigler - Natta catalyst (AlR₃ - AlCl₃) is used in the polymerisation of

Styrene
Vinyl chloride
Propylene
Vinyl acetate

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Polymer Technology
In condensation polymerisation as compared to addition polymerisation

The monomers contain two functional groups
The monomers are unsaturated compounds
No co-product is lost
Generally only one monomer is involved

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Polymer Technology
Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is

7 kgf/cm² and 700°C
7 kgf/cm² and 70 °C
1 kgf/cm² (gage) and 70°C
1000 kgf/cm² and 100°C

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Polymer Technology
Which of the following polymers has the tendency of decomposing before melting?

Nylon
Polystyrene
PVC
None of these

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Polymer Technology
Polystyrene is a __________ plastic at room temperature.

Ductile
Malleable
Brittle
None of these

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Polymer Technology
__________ is a homopolymer.

Neoprene
Nylon-66
Terylene
Bakelite

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