Polymer Technology Alkyd resin e.g., glyptal resin formed by phthalic anhydride and glycerene is not used For surface coating of automobiles & air crafts For fibre making For film forming materials As plasticiser for PVC & nitrocellulose For surface coating of automobiles & air crafts For fibre making For film forming materials As plasticiser for PVC & nitrocellulose ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polycondensation reaction of polymerisation Produces only thermoplastic material Does not need any catalyst Produces epoxy polymers Does not produce linear polymers Produces only thermoplastic material Does not need any catalyst Produces epoxy polymers Does not produce linear polymers ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Molecular weight of polymers are in the range of 10⁹-10¹¹ 10 to 10³ 10⁷-10⁹ 10²-10⁷ 10⁹-10¹¹ 10 to 10³ 10⁷-10⁹ 10²-10⁷ 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 Bakelite is An inorganic polymer Not a polymer Same as thermoset phenol formaldehyde Same as polytetra flouro ethylene (PTFE) An inorganic polymer Not a polymer Same as thermoset phenol formaldehyde Same as polytetra flouro ethylene (PTFE) ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is stretched into fibres? Isoprene Unsaturated polyester Saturated polyester Bakelite Isoprene Unsaturated polyester Saturated polyester Bakelite ANSWER DOWNLOAD EXAMIANS APP
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