Polymer Technology — Part 2 MCQs with Explanations

Polychloroprene is the correct answer to “Trade name of __________ is neoprene.”. This question is standard in competitive examination syllabi for Polymer Technology.

1:3 is the correct answer to “SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at”. This question is standard in competitive examination syllabi for Polymer Technology.

Magnitude of intermolecular forces is the correct answer to “Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their”. This question is standard in competitive examination syllabi for Polymer Technology.

Bottles is the correct answer to “Polyurathane can not be used for making”. This question is standard in competitive examination syllabi for Polymer Technology.

More brittle is the correct answer to “Thermosetting resins/polymers as compared to thermoplastic ones are”. This question is standard in competitive examination syllabi for Polymer Technology.

Have three dimensional structure is the correct answer to “Thermosetting polymers as compared to thermoplastic polymers”. This question is standard in competitive examination syllabi for Polymer Technology.

Polythene is the correct answer to “Which of the following is the lowest cost plastic commercially available”. This question is standard in competitive examination syllabi for Polymer Technology.

Toys and combs is the correct answer to “Polystyrene is a light, transparent, thermoplastic material used for making”. This question is standard in competitive examination syllabi for Polymer Technology.

All of the above is the correct answer to “The physical state in which polymers exist is”. This question is standard in competitive examination syllabi for Polymer Technology.

Fibre reinforced plastic (FRP) is the correct answer to “Polyurathane can not be used to make”. This question is standard in competitive examination syllabi for Polymer Technology.

Polythene is the correct answer to “Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m 2 . Which of the following polymers has the maximum film elongation (of the order of 100%)”. This question is standard in competitive examination syllabi for Polymer Technology.

Polyurethanes is the correct answer to “Flexible foam (for mattresses) are usually made of”. This question is standard in competitive examination syllabi for Polymer Technology.

None of these is the correct answer to “Bakelite is a/an”. This question is standard in competitive examination syllabi for Polymer Technology.

Either B or C is the correct answer to “Thermocole is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten”. This question is standard in competitive examination syllabi for Polymer Technology.

SBR is the correct answer to “Buna-S is also called”. This question is standard in competitive examination syllabi for Polymer Technology.

Saturated polyester is the correct answer to “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.”. This question is standard in competitive examination syllabi for Polymer Technology.

Neoprene is the correct answer to “__________ is a homopolymer.”. This question is standard in competitive examination syllabi for Polymer Technology.

Acrylic is the correct answer to “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.”. This question is standard in competitive examination syllabi for Polymer Technology.

Polypropylene is the correct answer to “Benzoyl chloride is not used as a catalyst in the manufacture of”. This question is standard in competitive examination syllabi for Polymer Technology.

Cellulose nitrate is the correct answer to “Celluloid is”. This question is standard in competitive examination syllabi for Polymer Technology.

Polyacrylonitrile is the correct answer to “The major component of acrylic fibres is”. This question is standard in competitive examination syllabi for Polymer Technology.

Organic peroxides is the correct answer to “Addition polymerisation takes place either by a free radical mechanism or ionic machanism depending on the reagents used. Free radical polymerisation is catelyzed by __________ , which decompose to give free radicals.”. This question is standard in competitive examination syllabi for Polymer Technology.

Cellulose is the correct answer to “Main constituent of cotton fibre is”. This question is standard in competitive examination syllabi for Polymer Technology.

Thermosetting is the correct answer to “Cross linked polymers are”. This question is standard in competitive examination syllabi for Polymer Technology.

50 is the correct answer to “Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about __________ ° C.”. This question is standard in competitive examination syllabi for Polymer Technology.

High temperature thermal insulation in furnaces is the correct answer to “Thermocole (expanded polystyrene) is not used for”. This question is standard in competitive examination syllabi for Polymer Technology.

More flexible is the correct answer to “Low density polythene as compared to high density polythene is”. This question is standard in competitive examination syllabi for Polymer Technology.

Engineering plastic is the correct answer to “Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styrene-acrylonitfile copolymer with butadiene based elastomer, is a/an”. This question is standard in competitive examination syllabi for Polymer Technology.

Alkyd resins is the correct answer to “__________ are produced by reacting polybasic acid (e.g. phthalic anhydride) with polyhydric alcohol (e.g., glycerol).”. This question is standard in competitive examination syllabi for Polymer Technology.

Impact is the correct answer to “Collapsible tubes for tooth paste are produced by __________ extrusion.”. This question is standard in competitive examination syllabi for Polymer Technology.

50 is the correct answer to “Cellulose content in bomboo fibre is about __________ percent.”. This question is standard in competitive examination syllabi for Polymer Technology.

Nitrile rubber is the correct answer to “Buna-N is also called”. This question is standard in competitive examination syllabi for Polymer Technology.

Nylon-66 is the correct answer to “__________ is a copolymer.”. This question is standard in competitive examination syllabi for Polymer Technology.

90 is the correct answer to “The conversion of caprolactum in the above case is about __________ percent.”. This question is standard in competitive examination syllabi for Polymer Technology.

Thermosetting is the correct answer to “Polymethyl methacrylate (PMMA) which is also known as perspex and is produced by bulk polymerisation of methyl methacrylate is not a __________ polymer.”. This question is standard in competitive examination syllabi for Polymer Technology.

Both B and C is the correct answer to “The monomer of natural rubber is”. This question is standard in competitive examination syllabi for Polymer Technology.

Benzene is the correct answer to “Caprolactum, a raw material for the manufacture of nylon-6, is produced from”. This question is standard in competitive examination syllabi for Polymer Technology.

1-1000 is the correct answer to “Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of __________ percent.”. This question is standard in competitive examination syllabi for Polymer Technology.

Dibasic acid with dihydric alcohol is the correct answer to “Polyesters are manufactured by the polycondensation reaction of”. This question is standard in competitive examination syllabi for Polymer Technology.

Polyisoprene is the correct answer to “Which of the following has the weakest intermolecular forces”. This question is standard in competitive examination syllabi for Polymer Technology.