Polymer Technology Neoprene is rendered non-inflammable, because of The absence of chlorine atoms in its monomer Its cross-linked structure Its linear chain structure The presence of chlorine atoms in its monomer The absence of chlorine atoms in its monomer Its cross-linked structure Its linear chain structure The presence of chlorine atoms in its monomer ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m². Which of the following polymers has the maximum film elongation (of the order of 100%) ? Teflon Polythene Cellulose acetate Water impermeable cellophane Teflon Polythene Cellulose acetate Water impermeable cellophane ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its Elasticity Weathering characteristics Strength Plasticity Elasticity Weathering characteristics Strength Plasticity ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following additives are added to plastics to make it impervious to X-rays? Barium salt Asbestos Carborundum Phthalic acid Barium salt Asbestos Carborundum Phthalic acid ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Zeigler - Natta catalyst (AlR₃ - AlCl₃) is used in the polymerisation of Vinyl acetate Vinyl chloride Propylene Styrene Vinyl acetate Vinyl chloride Propylene Styrene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are 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 0°C and 1 kgf/cm² 5°C and 1 kgf/cm² ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS