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. Sulphuric acid Hydroflouric acid Organic peroxides None of these Sulphuric acid Hydroflouric acid Organic peroxides None of these ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Low density polythene as compared to high density polythene is More flexible Harder Chemically inert Tougher More flexible Harder Chemically inert Tougher ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Melt spinning of polymers involves the forcing of polymer melt through spinnerettes (fine holes) into an atmosphere kept at a temperature lower than the melting point of the polymer, which causes the fine diameter polymer melt to harden into filaments. Melt spinning is not used in case of the __________ fibres. Polyester Polypropylene Nylon 6:6 Acrylic Polyester Polypropylene Nylon 6:6 Acrylic ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Acrilan fibres used for making cloth, carpet & blankets, which is a hard, horny & high melting polymeric material is nothing but Polyacrylonitrile Saturated polyester Polyamide Alkyd resin Polyacrylonitrile Saturated polyester Polyamide Alkyd resin ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is not a polyolefin? None of these Polystyrene Neoprene Polypropylene None of these Polystyrene Neoprene Polypropylene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Rexin (also called artificial leather), which is used for making table cover, automobile seat cover, shoes etc. is made by coating thick cloth with molten Bakelite PVC Teflon SBR Bakelite PVC Teflon SBR ANSWER DOWNLOAD EXAMIANS APP
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