Polymer Technology Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their Molecular sizes Resistance to heat Magnitude of intermolecular forces Polymerisation mechanism Molecular sizes Resistance to heat Magnitude of intermolecular forces Polymerisation mechanism ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Crystallisation of polymers is an undesirable property. Crystallisation of celluloid is prevented by adding Glycerol Camphor Nitro cellulose None of these Glycerol Camphor Nitro cellulose None of these 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 Which of the following polymers shows the highest anti-tacking properties? Alkyd resin Melamine formaldehyde resin Epoxy resin Phenolic resin Alkyd resin Melamine formaldehyde resin Epoxy resin Phenolic resin ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is Ni V₂O₅ Aluminium triethyl combined with titanium tetrachloride Fe Ni V₂O₅ Aluminium triethyl combined with titanium tetrachloride Fe ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Buna-S is also called Bakelite Teflon Polyurathane SBR Bakelite Teflon Polyurathane SBR ANSWER DOWNLOAD EXAMIANS APP
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