Polymer Technology Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from __________ resins. Phenol formaldehyde Melamine formaldehyde Epoxy Urea formaldehyde Phenol formaldehyde Melamine formaldehyde Epoxy Urea formaldehyde ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Cross linked polymers formed from bi-and trifuctional groups in which cross-linkage in three dimensions via few chemical bonding across linear chains occur imparts to the polymer __________ properties. Elastometric Thermoplastic Thermosetting Brittleness Elastometric Thermoplastic Thermosetting Brittleness ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Reaction of dimethyl terephthalate (DMT) and ethylene glycol produces Polyester Nylon-6 Dacron PVC Polyester Nylon-6 Dacron PVC ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Viscosity of a polymer solution or melt Decreases with increase in temperature Decreases with increase in molecular weight Increases with increase in temperature Does not vary with temperature rise Decreases with increase in temperature Decreases with increase in molecular weight Increases with increase in temperature Does not vary with temperature rise ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex? Both A & B Neither A nor B Potassium alum Ammonium alum Both A & B Neither A nor B Potassium alum Ammonium alum ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polyvinyl acetate is never used for making All of these Fibres Moulded articles Adhesives All of these Fibres Moulded articles Adhesives ANSWER DOWNLOAD EXAMIANS APP
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