Polymer Technology Tubeless tyres are made of __________ rubber, which is a co-polymer of isoprene & isobutylene. Neoprene Nitrile Silicone Butyl Neoprene Nitrile Silicone Butyl ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Softening point of high density polythene is about __________ °C. 205 85 135 165 205 85 135 165 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Addition of plasticisers to polymers results in partial neutralisation of intermolecular forces of attraction between the macro-molecules thereby increasing its Chemical resistance Tensile strength Flexibility All of these Chemical resistance Tensile strength Flexibility All of these ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at 1:2 1:3 3:1 2:1 1:2 1:3 3:1 2:1 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Low pressure Zeigler process of polythene manufacture Achieves an yield of 95-98% based on ethylene Employs a pressure of 30 kgf/cm² Does not use any catalyst for polymerisation Produces very low density polythene Achieves an yield of 95-98% based on ethylene Employs a pressure of 30 kgf/cm² Does not use any catalyst for polymerisation Produces very low density polythene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Branched chair polymers as compared to linear polymers have None of these Lower density Higher melting point Higher tensile strength None of these Lower density Higher melting point Higher tensile strength ANSWER DOWNLOAD EXAMIANS APP
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