Polymer Technology Which of the following is not a natural polymer? Nucleic acids e.g. RNA and DNA Polyisoprene Polysaccharides Polyurethane Nucleic acids e.g. RNA and DNA Polyisoprene Polysaccharides Polyurethane ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is not a natural fibre? Viscose rayon Wool Silk Cotton Viscose rayon Wool Silk Cotton ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology All thermoplastic, thermosetting & elastic materials can be processed in a extrusion machine, however it can not be used for the production of plastic Filaments Pipes Tubings Buckets Filaments Pipes Tubings Buckets ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Main constituent of natural rubber is Polyisoprene Poly chloroprene Polybutadiene Polystyrene Polyisoprene Poly chloroprene Polybutadiene Polystyrene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex? Ammonium alum Neither A nor B Both A & B Potassium alum Ammonium alum Neither A nor B Both A & B Potassium alum ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polyvinyl chloride (PVC) Softening temperature is 200°C Can be made thermosetting by adding a plasticiser Is produced by polycondensation reaction Uses either emulsion or suspension polymerisation methods Softening temperature is 200°C Can be made thermosetting by adding a plasticiser Is produced by polycondensation reaction Uses either emulsion or suspension polymerisation methods ANSWER DOWNLOAD EXAMIANS APP
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