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Polymer Technology

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

Plexiglass or lucite
Dacron
Thiokol
Teflon

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Polymer Technology
Molecular weights of plastics ranges from

20000 to 25000
10⁹ to l0¹¹
1000 to 5000
5000 to 1000

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Polymer Technology
Bakelite is

Same as thermoset phenol formaldehyde
Same as polytetra flouro ethylene (PTFE)
Not a polymer
An inorganic polymer

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Polymer Technology
Bristles of tooth brushes are made of

PVC
Nylon-6
Polystyrene
Nylon-66

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Polymer Technology
__________ polythene is most prone to stress-cracking

Linear low density
Cross-linked
Low density
High density

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Polymer Technology
__________ practically possess no elasticity.

Polysulphide rubber
Epoxy resin
Vulcanite or ebonite
Spandex fibre

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