Polymer Technology In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of Cross linked polystyrene Polyamides Phenol formaldehyde resins Polyesters Cross linked polystyrene Polyamides Phenol formaldehyde resins Polyesters ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Styrene which is a monomer for the production of polystyrene, is commercially produced by the Reacting ethylene oxide with acetal-dehyde Dehydration of ethyl alcohol followed by hydrogenation Catalytic dehydrogenation of ethyl benzene Fermentation of starch Reacting ethylene oxide with acetal-dehyde Dehydration of ethyl alcohol followed by hydrogenation Catalytic dehydrogenation of ethyl benzene Fermentation of starch ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Crystallisation of polymers is an undesirable property. Crystallisation of celluloid is prevented by adding None of these Camphor Glycerol Nitro cellulose None of these Camphor Glycerol Nitro cellulose ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polyvinyl acetate is never used for making Fibres All of these Adhesives Moulded articles Fibres All of these Adhesives Moulded articles ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Molecular weights of plastics ranges from 20000 to 25000 1000 to 5000 5000 to 1000 10⁹ to l0¹¹ 20000 to 25000 1000 to 5000 5000 to 1000 10⁹ to l0¹¹ ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology A copolymer is formed by the combination of two or more monomer molecules In a chain without the elimination of water With the elimination of small amount of water None of these Of the same monomer by elimination of small molecules of water In a chain without the elimination of water With the elimination of small amount of water None of these Of the same monomer by elimination of small molecules of water ANSWER DOWNLOAD EXAMIANS APP
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