Polymer Technology Which of the following additives are added to plastics to make it impervious to X-rays? Carborundum Barium salt Asbestos Phthalic acid Carborundum Barium salt Asbestos Phthalic acid ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polyvinyl chloride (PVC) 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 Softening temperature is 200°C ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Silicone resins, which are highly water repellant and has good heat resistance can not be used As grease & lubricant As room temperature adhesive Hydraulic fluid for heat transfer Resin for lamination As grease & lubricant As room temperature adhesive Hydraulic fluid for heat transfer Resin for lamination ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Epoxy resins (i.e., epoxide polymers) Use emulsion polymerisation methods Are made by addition polymerisation reaction only Contain an epoxy group ( ##### ) at the ends of the polymer Are cross-linked polymers only Use emulsion polymerisation methods Are made by addition polymerisation reaction only Contain an epoxy group ( ##### ) at the ends of the polymer Are cross-linked polymers only ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Condensation polymerisation of caprolac-tum is carried out in the reactor maintained at a temperature of __________ °C for producing nylon-6. 100 to 150 50 to 75 250-280 -20 to 25 100 to 150 50 to 75 250-280 -20 to 25 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Bristles of tooth brushes are made of Nylon-66 PVC Polystyrene Nylon-6 Nylon-66 PVC Polystyrene Nylon-6 ANSWER DOWNLOAD EXAMIANS APP
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