Polymer Technology Flexible plastic pipes are made of High density polyethylene (HDPE) Polypropylene Unsaturated polyester Low density polyethylene (LDPE) High density polyethylene (HDPE) Polypropylene Unsaturated polyester Low density polyethylene (LDPE) ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology __________ moulding is used for shaping of thermosetting plastics exclusively. Extrusion Injection Transfer Compression Extrusion Injection Transfer Compression ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Dacron (or terylene) fibres as compared to nylon fibres have Poorer dyeability Better heat & acid resistant properties All of these Poorer resistance to alkalis Poorer dyeability Better heat & acid resistant properties All of these Poorer resistance to alkalis ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The conversion of caprolactum in the above case is about __________ percent. 90 70 25 50 90 70 25 50 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 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 Reacting ethylene oxide with acetal-dehyde ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology 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. Polypropylene Polyester Acrylic Nylon 6:6 Polypropylene Polyester Acrylic Nylon 6:6 ANSWER DOWNLOAD EXAMIANS APP
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