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Polymer Technology

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

350
100
450
150

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Polymer Technology
Buna-N is also called

Butyl rubber
Nitrile rubber
Neoprene
Thiokol

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Polymer Technology
__________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine.

Amino
Epoxy
Alkyd
Phenolic

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Polymer Technology
__________ practically possess no elasticity.

Epoxy resin
Polysulphide rubber
Spandex fibre
Vulcanite or ebonite

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Polymer Technology
Synthetic polymer produced by using terephthalic acid and ethylene glycol is

Polyesterene
Terylene
Nylon-66
PVC

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

Vinyl acetate
Propylene
Vinyl chloride
Styrene

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