Polymer Technology Which of the following rubbers has the widest service temperature range (-75 to 275°C) ? Nitrile rubber Silicone rubber Silicon rubber Butyl rubber Nitrile rubber Silicone rubber Silicon rubber Butyl rubber ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Softening point of high density polythene is about __________ °C. 85 205 135 165 85 205 135 165 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Elastomers are Having very high tensile strength and heat resistance Exemplified by protein derivatives Thermosetting material Having high flexural strength Having very high tensile strength and heat resistance Exemplified by protein derivatives Thermosetting material Having high flexural strength ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Neoprene is rendered non-inflammable, because of Its cross-linked structure The absence of chlorine atoms in its monomer Its linear chain structure The presence of chlorine atoms in its monomer Its cross-linked structure The absence of chlorine atoms in its monomer Its linear chain structure The presence of chlorine atoms in its monomer ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polyvinyl chloride (PVC) Uses either emulsion or suspension polymerisation methods Can be made thermosetting by adding a plasticiser Is produced by polycondensation reaction Softening temperature is 200°C Uses either emulsion or suspension polymerisation methods Can be made thermosetting by adding a plasticiser Is produced by polycondensation reaction Softening temperature is 200°C ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces Phenolic resin Epoxy resin Alkyd resin Polyamide Phenolic resin Epoxy resin Alkyd resin Polyamide ANSWER DOWNLOAD EXAMIANS APP
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