Polymer Technology Polyvinyl chloride (PVC) Uses either emulsion or suspension polymerisation methods Is produced by polycondensation reaction Softening temperature is 200°C Can be made thermosetting by adding a plasticiser Uses either emulsion or suspension polymerisation methods Is produced by polycondensation reaction Softening temperature is 200°C Can be made thermosetting by adding a plasticiser ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Contact lenses for eyes are made of perspex, which is nothing but Polystyrene Polypropylene Polymethylmethacrylate Unsaturated polyester Polystyrene Polypropylene Polymethylmethacrylate Unsaturated polyester ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Rayon is superior to cotton in making gauge for wound treatment, because rayon Both B & C Can absorb over 90% of its own weight of water Does not stick to the wound unlike cotton Is a synthetic polymer Both B & C Can absorb over 90% of its own weight of water Does not stick to the wound unlike cotton Is a synthetic polymer ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is a natural polyamide fibre. Silk Wool Cotton None of these Silk Wool Cotton None of these ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Melt spinning of polymers involves the forcing of polymer melt through spinnerettes (fine holes) into an atmosphere kept at a temperature lower than the melting point of the polymer, which causes the fine diameter polymer melt to harden into filaments. Melt spinning is not used in case of the __________ fibres. Acrylic Polypropylene Nylon 6:6 Polyester Acrylic Polypropylene Nylon 6:6 Polyester ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Styrene butadiene rubber (SBR) is never used for making Front wheel tyres of aeroplanes (i.e., heavy duty tyres) Coated fabrics Gaskets Soles of shoes Front wheel tyres of aeroplanes (i.e., heavy duty tyres) Coated fabrics Gaskets Soles of shoes ANSWER DOWNLOAD EXAMIANS APP
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