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? Potassium alum Both A & B Neither A nor B Ammonium alum Potassium alum Both A & B Neither A nor B Ammonium alum ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Scouring is a finishing operation during the manufacture of fibre, which aims at __________ of fibres. Glycol soaking Improving the stretchability Dyeing/colouring Detergent solution washing Glycol soaking Improving the stretchability Dyeing/colouring Detergent solution washing ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The only natural thermoplastic resin, which is a product of animal life is Shellac Copal Rosin Amber Shellac Copal Rosin Amber ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is not an elastomer? Polyisoprene Nitrile-butadiene Neoprene None of these Polyisoprene Nitrile-butadiene Neoprene None of these ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology __________ is not a condensation polymer. Polystyrene Nylon-66 Teflon Dacron Polystyrene Nylon-66 Teflon Dacron ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polyvinyl chloride (PVC) Softening temperature is 200°C Can be made thermosetting by adding a plasticiser Uses either emulsion or suspension polymerisation methods Is produced by polycondensation reaction Softening temperature is 200°C Can be made thermosetting by adding a plasticiser Uses either emulsion or suspension polymerisation methods Is produced by polycondensation reaction ANSWER DOWNLOAD EXAMIANS APP
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