Polymer Technology Dacron (or terylene) fibres as compared to nylon fibres have Better heat & acid resistant properties Poorer dyeability Poorer resistance to alkalis All of these Better heat & acid resistant properties Poorer dyeability Poorer resistance to alkalis All of these 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 In case of wet spinning of polymers, the polymer solution is forced through spinnerates into, a coagulating bath to give a filament form. Wet spinning is not used in case of the __________ fibres. Saturated polyester Viscose rayon Acrylic Polyvinyl acetate Saturated polyester Viscose rayon Acrylic Polyvinyl acetate ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Cellulose is the main contituent of most __________ fibres. Natural Spandex Acrylic Synthetic Natural Spandex Acrylic Synthetic ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher Densities Melting point Hardness, rigidity & brittleness Tensile strength Densities Melting point Hardness, rigidity & brittleness Tensile strength ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Branched chair polymers as compared to linear polymers have None of these Higher tensile strength Lower density Higher melting point None of these Higher tensile strength Lower density Higher melting point ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS