Polymer Technology Phosphates (e.g., triceresyl, tributyl, tetrabutyl, tripheyl etc.) are added to polymers to act as Hardeners Plasticisers Anti-shrinkage agents Transparency improver Hardeners Plasticisers Anti-shrinkage agents Transparency improver ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is Ni Aluminium triethyl combined with titanium tetrachloride V₂O₅ Fe Ni Aluminium triethyl combined with titanium tetrachloride V₂O₅ Fe ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces Phenolic resin Polyamide Epoxy resin Alkyd resin Phenolic resin Polyamide Epoxy resin Alkyd resin ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is not a natural polymer? Polyurethane Polysaccharides Nucleic acids e.g. RNA and DNA Polyisoprene Polyurethane Polysaccharides Nucleic acids e.g. RNA and DNA Polyisoprene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following additives are added to plastics to make it impervious to X-rays? Barium salt Asbestos Carborundum Phthalic acid Barium salt Asbestos Carborundum Phthalic acid 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 film forming materials For surface coating of automobiles & air crafts For fibre making As plasticiser for PVC & nitrocellulose For film forming materials For surface coating of automobiles & air crafts For fibre making ANSWER DOWNLOAD EXAMIANS APP
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