Polymer Technology Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation? Epoxy resin Bakelite PTFE PVC Epoxy resin Bakelite PTFE PVC ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is the most important rubber compounding ingradient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness? Phosphorous Rosin Pine oil Carbon black Phosphorous Rosin Pine oil Carbon black ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about __________ ° C. 500 50 250 -20 500 50 250 -20 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology __________ are produced by reacting polybasic acid (e.g. phthalic anhydride) with polyhydric alcohol (e.g., glycerol). Amino resins Unsaturated polyester Alkyd resins Saturated polyester Amino resins Unsaturated polyester Alkyd resins Saturated polyester ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Low pressure Zeigler process of polythene manufacture Achieves an yield of 95-98% based on ethylene Produces very low density polythene Does not use any catalyst for polymerisation Employs a pressure of 30 kgf/cm² Achieves an yield of 95-98% based on ethylene Produces very low density polythene Does not use any catalyst for polymerisation Employs a pressure of 30 kgf/cm² ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Size range of polymer molecules varies from __________ metre. 10⁻⁸ to 10⁻¹⁰ 10⁻² to 10⁻⁵ 10⁻¹ to 10⁻² 10⁻⁴ to 10⁻⁷ 10⁻⁸ to 10⁻¹⁰ 10⁻² to 10⁻⁵ 10⁻¹ to 10⁻² 10⁻⁴ to 10⁻⁷ ANSWER DOWNLOAD EXAMIANS APP
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