Polymer Technology Polystyrene is a __________ plastic at room temperature. None of these Ductile Brittle Malleable None of these Ductile Brittle Malleable ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polyvinyl chloride (PVC) 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 Uses either emulsion or suspension polymerisation methods ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Alkyd resin e.g., glyptal resin formed by phthalic anhydride and glycerene is not used As plasticiser for PVC & nitrocellulose For fibre making For film forming materials For surface coating of automobiles & air crafts As plasticiser for PVC & nitrocellulose For fibre making For film forming materials For surface coating of automobiles & air crafts ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The only natural thermoplastic resin, which is a product of animal life is Copal Amber Rosin Shellac Copal Amber Rosin Shellac ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Valcunisation of rubber decreases its Tackiness Resistance to organic solvents Working temperature range Tensile strength Tackiness Resistance to organic solvents Working temperature range Tensile strength ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Dacron (or terylene) fibres as compared to nylon fibres have Poorer dyeability All of these Better heat & acid resistant properties Poorer resistance to alkalis Poorer dyeability All of these Better heat & acid resistant properties Poorer resistance to alkalis ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS