Polymer Technology Vulcanisation of rubber does not increase its Weight & strength Oxidation resistance Elasticity & water solubility Softness Weight & strength Oxidation resistance Elasticity & water solubility Softness 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. Rayon Polyvinyl acetate PVC Polythene Rayon Polyvinyl acetate PVC Polythene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The physical state in which polymers exist is Partially crystalline state Amorphous glassy state Melts & rubber like state All of these Partially crystalline state Amorphous glassy state Melts & rubber like state All of these ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Catalyst used in the production of high density polythene by low pressure Ziegler process is Aluminium triethyl activated with TiCl₄ Molybdenum Platinum Nickel Aluminium triethyl activated with TiCl₄ Molybdenum Platinum Nickel ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Phosphates (e.g., triceresyl, tributyl, tetrabutyl, tripheyl etc.) are added to polymers to act as Plasticisers Anti-shrinkage agents Transparency improver Hardeners Plasticisers Anti-shrinkage agents Transparency improver Hardeners ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is not a polyolefin? Polypropylene Polystyrene Neoprene None of these Polypropylene Polystyrene Neoprene None of these ANSWER DOWNLOAD EXAMIANS APP
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