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 3:1 1:3 2:1 1:2 3:1 1:3 2:1 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polymerisation process in which two or more monomers of chemically different nature take part is called None of these Addition polymerisation Chain polymerisation Copolymerisation None of these Addition polymerisation Chain polymerisation Copolymerisation ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Addition polymerisation takes place either by a free radical mechanism or ionic machanism depending on the reagents used. Free radical polymerisation is catelyzed by __________ , which decompose to give free radicals. Hydroflouric acid None of these Organic peroxides Sulphuric acid Hydroflouric acid None of these Organic peroxides Sulphuric acid ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Melamine formaldehyde resin which has a very high anti tacking properties, is not used for the Decorative laminates Tanning of leather Strengthening of plaster of paris Electrical insulation purpose Decorative laminates Tanning of leather Strengthening of plaster of paris Electrical insulation purpose ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Scouring is a finishing operation during the manufacture of fibre, which aims at __________ of fibres. Dyeing/colouring Improving the stretchability Glycol soaking Detergent solution washing Dyeing/colouring Improving the stretchability Glycol soaking Detergent solution washing ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is the lowest cost plastic commercially available? Teflon PVC Polythene Bakelite Teflon PVC Polythene Bakelite ANSWER DOWNLOAD EXAMIANS APP
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