Polymer Technology Which of the following is not a natural polymer? Polysaccharides Polyisoprene Polyurethane Nucleic acids e.g. RNA and DNA Polysaccharides Polyisoprene Polyurethane Nucleic acids e.g. RNA and DNA ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Epoxy resins (i.e., epoxide polymers) Contain an epoxy group ( ##### ) at the ends of the polymer Use emulsion polymerisation methods Are made by addition polymerisation reaction only Are cross-linked polymers only Contain an epoxy group ( ##### ) at the ends of the polymer Use emulsion polymerisation methods Are made by addition polymerisation reaction only Are cross-linked polymers only ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology __________ is not a condensation polymer. Polystyrene Dacron Nylon-66 Teflon Polystyrene Dacron Nylon-66 Teflon ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The rate controlling step in the manufacture of silicone rubber is the None of these Condensation of siloxane to silicone Initial hydrolysis of silicone monomer Polymer termination step None of these Condensation of siloxane to silicone Initial hydrolysis of silicone monomer Polymer termination step 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 Carbon black Rosin Pine oil Phosphorous Carbon black Rosin Pine oil ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Valcunisation of rubber decreases its Working temperature range Tackiness Tensile strength Resistance to organic solvents Working temperature range Tackiness Tensile strength Resistance to organic solvents ANSWER DOWNLOAD EXAMIANS APP
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