Polymer Technology Which of the following additives are added to plastics to make it impervious to X-rays? Phthalic acid Barium salt Asbestos Carborundum Phthalic acid Barium salt Asbestos Carborundum ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Trade name of __________ is neoprene. Polychloroprene Poly vinyl acetate Polyisoprene Polytetraflouroethylene Polychloroprene Poly vinyl acetate Polyisoprene Polytetraflouroethylene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Addition of stabiliser during PVC manufacture is done to Reduce the melt viscosity & glass transition temperature Improve its elasticity Improve its impact strength Prevent its thermal degradation Reduce the melt viscosity & glass transition temperature Improve its elasticity Improve its impact strength Prevent its thermal degradation ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Catalyst used in the production of high density polythene by low pressure Ziegler process is Molybdenum Platinum Aluminium triethyl activated with TiCl₄ Nickel Molybdenum Platinum Aluminium triethyl activated with TiCl₄ Nickel ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of Vinyl polymers Siloxane elastomers Urea-formaldehyde resins Polyamides Vinyl polymers Siloxane elastomers Urea-formaldehyde resins Polyamides ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Most of the fibre forming polymers are crystalline in nature, one of the exceptions being __________ which is amorphous in nature. Nylon Polyester Polypropylene Polyacrylonitrile Nylon Polyester Polypropylene Polyacrylonitrile ANSWER DOWNLOAD EXAMIANS APP
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