Alkyd resin is a/an
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Chemical Engineering · all questionsPolymer Technology
Polymer Technology
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Trade name of __________ is neoprene.
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SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at
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Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their
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Polyurathane can not be used for making
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Thermosetting resins/polymers as compared to thermoplastic ones are
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Thermosetting polymers as compared to thermoplastic polymers
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Which of the following is the lowest cost plastic commercially available?
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Polystyrene is a light, transparent, thermoplastic material used for making
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The physical state in which polymers exist is
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Polyurathane can not be used to make
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Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m2. Which of the following polymers has the maximum film elongation (of the order of 100%)?
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Flexible foam (for mattresses) are usually made of
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Bakelite is
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Bakelite is a/an
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Thermocole is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten
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Buna-S is also called
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In case of wet spinning of polymers, the polymer solution is forced through spinnerates into, a coagulating bath to give a filament form. Wet spinning is not used in case of the __________ fibres.
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__________ is a homopolymer.
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Melt spinning of polymers involves the forcing of polymer melt through spinnerettes (fine holes) into an atmosphere kept at a temperature lower than the melting point of the polymer, which causes the fine diameter polymer melt to harden into filaments. Melt spinning is not used in case of the __________ fibres.
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