Polymer Technology The monomer of poly vinyl chloride (PVC) is Ethylene dichloride Chloroform Ethyl chloride Chloroethene Ethylene dichloride Chloroform Ethyl chloride Chloroethene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Density of high density polythene is about __________ gm/c.c. 1.18 1.05 0.99 0.95 1.18 1.05 0.99 0.95 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Styrene which is a monomer for the production of polystyrene, is commercially produced by the Dehydration of ethyl alcohol followed by hydrogenation Reacting ethylene oxide with acetal-dehyde Fermentation of starch Catalytic dehydrogenation of ethyl benzene Dehydration of ethyl alcohol followed by hydrogenation Reacting ethylene oxide with acetal-dehyde Fermentation of starch Catalytic dehydrogenation of ethyl benzene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is not a natural polymer? Polyisoprene Polysaccharides Nucleic acids e.g. RNA and DNA Polyurethane Polyisoprene Polysaccharides Nucleic acids e.g. RNA and DNA Polyurethane ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following additives are added to plastics to make it impervious to X-rays? Asbestos Phthalic acid Barium salt Carborundum Asbestos Phthalic acid Barium salt Carborundum ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology 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. Organic peroxides None of these Hydroflouric acid Sulphuric acid Organic peroxides None of these Hydroflouric acid Sulphuric acid ANSWER DOWNLOAD EXAMIANS APP
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