Polymer Technology Condensation polymerisation of __________ produces bakelite. Phenol & acetaldehyde Propylene Urea & formaldehyde Phenol & formaldehyde Phenol & acetaldehyde Propylene Urea & formaldehyde Phenol & formaldehyde ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Tyres are made by Extrusion Injection moulding Rotational moulding Compression moulding Extrusion Injection moulding Rotational moulding Compression moulding ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Vulcanisation of raw rubber makes it Less elastic Tacky Plastic Soft Less elastic Tacky Plastic Soft ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Low pressure Zeigler process of polythene manufacture Achieves an yield of 95-98% based on ethylene Does not use any catalyst for polymerisation Produces very low density polythene Employs a pressure of 30 kgf/cm² Achieves an yield of 95-98% based on ethylene Does not use any catalyst for polymerisation Produces very low density polythene Employs a pressure of 30 kgf/cm² 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. Saturated polyester Acrylic Polyvinyl acetate Viscose rayon Saturated polyester Acrylic Polyvinyl acetate Viscose rayon ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Molecular weights of plastics ranges from 20000 to 25000 10⁹ to l0¹¹ 1000 to 5000 5000 to 1000 20000 to 25000 10⁹ to l0¹¹ 1000 to 5000 5000 to 1000 ANSWER DOWNLOAD EXAMIANS APP
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