Polymer Technology Which of the following additives are added to plastics to make it impervious to X-rays? Carborundum Phthalic acid Asbestos Barium salt Carborundum Phthalic acid Asbestos Barium salt ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids? Starch Nucleic acids Proteins Cellulose Starch Nucleic acids Proteins Cellulose ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology __________ polythene is most prone to stress-cracking Linear low density High density Cross-linked Low density Linear low density High density Cross-linked Low density ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m². Which of the following polymers has the maximum film elongation (of the order of 100%) ? Water impermeable cellophane Polythene Cellulose acetate Teflon Water impermeable cellophane Polythene Cellulose acetate Teflon ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology In case of wet spinning of polymers, the polymer solution is forced through spinnerates into, a coagulating bath to give a filament form. Wet spinning is not used in case of the __________ fibres. Viscose rayon Polyvinyl acetate Acrylic Saturated polyester Viscose rayon Polyvinyl acetate Acrylic Saturated polyester ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polypropylene is preferred to polythene, because the former is Both B & C Harder Non-inflammable Stronger Both B & C Harder Non-inflammable Stronger ANSWER DOWNLOAD EXAMIANS APP
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