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. Organic peroxides None of these Sulphuric acid Hydroflouric acid Organic peroxides None of these Sulphuric acid Hydroflouric acid ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are 0°C and 1 kgf/cm² 5°C and 1 kgf/cm² 0°C and 3 kgf/cm² - 20°C and 1 kgf/cm² 0°C and 1 kgf/cm² 5°C and 1 kgf/cm² 0°C and 3 kgf/cm² - 20°C and 1 kgf/cm² ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Plastic tubes & pipes are generally made by __________ moulding. Extrusion Compression Transfer Injection Extrusion Compression Transfer Injection ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following low molecular weight ( PVC Cellulose acetate Polyvinyl acetate Thiokol PVC Cellulose acetate Polyvinyl acetate Thiokol ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Condensation polymerisation of caprolac-tum is carried out in the reactor maintained at a temperature of __________ °C for producing nylon-6. 50 to 75 250-280 -20 to 25 100 to 150 50 to 75 250-280 -20 to 25 100 to 150 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polystyrene is a __________ plastic at room temperature. Ductile None of these Brittle Malleable Ductile None of these Brittle Malleable ANSWER DOWNLOAD EXAMIANS APP
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