Polymer Technology Which of the following polymers has the tendency of decomposing before melting? None of these PVC Nylon Polystyrene None of these PVC Nylon Polystyrene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polyvinyl chloride (PVC) Is produced by polycondensation reaction Can be made thermosetting by adding a plasticiser Uses either emulsion or suspension polymerisation methods Softening temperature is 200°C Is produced by polycondensation reaction Can be made thermosetting by adding a plasticiser Uses either emulsion or suspension polymerisation methods Softening temperature is 200°C ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following polymers belong to the class of formaldehyde resin? None of these Dacron Teflon Melamine resins None of these Dacron Teflon Melamine resins ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Rayon is superior to cotton in making gauge for wound treatment, because rayon Can absorb over 90% of its own weight of water Both B & C Does not stick to the wound unlike cotton Is a synthetic polymer Can absorb over 90% of its own weight of water Both B & C Does not stick to the wound unlike cotton Is a synthetic polymer ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxident used in rubber? Carbon Alkylated diphenyl amine Magnesium Thiokol Carbon Alkylated diphenyl amine Magnesium Thiokol ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is 7 kgf/cm² and 70 °C 1000 kgf/cm² and 100°C 1 kgf/cm² (gage) and 70°C 7 kgf/cm² and 700°C 7 kgf/cm² and 70 °C 1000 kgf/cm² and 100°C 1 kgf/cm² (gage) and 70°C 7 kgf/cm² and 700°C ANSWER DOWNLOAD EXAMIANS APP
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