Polymer Technology Flexible plastic pipes are made of Low density polyethylene (LDPE) High density polyethylene (HDPE) Polypropylene Unsaturated polyester Low density polyethylene (LDPE) High density polyethylene (HDPE) Polypropylene Unsaturated polyester ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxident used in rubber? Thiokol Magnesium Carbon Alkylated diphenyl amine Thiokol Magnesium Carbon Alkylated diphenyl amine 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 Weathering characteristics Plasticity Strength Elasticity Weathering characteristics Plasticity Strength Elasticity ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry spinning is used for __________ fibres. Polythene PVC Rayon Polyvinyl acetate Polythene PVC Rayon Polyvinyl acetate 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 Hardness, rigidity & brittleness Melting point Tensile strength Densities Hardness, rigidity & brittleness Melting point Tensile strength ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology __________ polymer is produced by the copolymerisation of vinyl chloride-vinyl acetate. Leathery Hard Fibrous Rubbery Leathery Hard Fibrous Rubbery ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS