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 Organic peroxides None of these Sulphuric acid Hydroflouric acid Organic peroxides None of these Sulphuric acid ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology __________ is a copolymer. Nylon-66 Poly tetra flouro ethylene Polyrophylene PVC Nylon-66 Poly tetra flouro ethylene Polyrophylene PVC ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Orion is Obtained by polymerising vinyl cyanide A copolymer All of these A condensation polymer Obtained by polymerising vinyl cyanide A copolymer All of these A condensation polymer ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from __________ resins. Phenol formaldehyde Melamine formaldehyde Epoxy Urea formaldehyde Phenol formaldehyde Melamine formaldehyde Epoxy Urea formaldehyde ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Catalyst used in the production of high density polythene by low pressure Ziegler process is Aluminium triethyl activated with TiCl₄ Molybdenum Platinum Nickel Aluminium triethyl activated with TiCl₄ Molybdenum Platinum Nickel ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Low pressure Zeigler process of polythene manufacture Produces very low density polythene Does not use any catalyst for polymerisation Employs a pressure of 30 kgf/cm² Achieves an yield of 95-98% based on ethylene Produces very low density polythene Does not use any catalyst for polymerisation Employs a pressure of 30 kgf/cm² Achieves an yield of 95-98% based on ethylene ANSWER DOWNLOAD EXAMIANS APP
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