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Polymer Technology

Polymer Technology
__________ is a homopolymer.

Neoprene
Bakelite
Terylene
Nylon-66

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Polymer Technology
Diphenylamine is added to rubber to

Valcanise it
Make it thermosetting
Protect it from deterioration on exposure to air
Make it non-inflammable

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Polymer Technology
Starting material for the production of SBR is

Neither A nor B
Ethyl alcohol
Both A & B
Ethylene

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Polymer Technology
In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry spinning is used for __________ fibres.

Polythene
Polyvinyl acetate
PVC
Rayon

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Polymer Technology
Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex?

Ammonium alum
Both A & B
Neither A nor B
Potassium alum

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Polymer Technology
Plexiglass (also called lucite) because of its high optical transparency is used for making lenses. It is chemically

Phenolic resins
Polymethyl methacrylate (PMMA)
Polytetraflouroethylene(PTFE)
Polycarbonates

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