Polymer Technology Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from __________ resins. Urea formaldehyde Melamine formaldehyde Phenol formaldehyde Epoxy Urea formaldehyde Melamine formaldehyde Phenol formaldehyde Epoxy ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Rexin (also called artificial leather), which is used for making table cover, automobile seat cover, shoes etc. is made by coating thick cloth with molten PVC SBR Teflon Bakelite PVC SBR Teflon Bakelite ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Synthetic rubber Deforms, if stretched to double of its original dimension Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases Is softer at higher temperature Is brittle at low temperature Deforms, if stretched to double of its original dimension Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases Is softer at higher temperature Is brittle at low temperature ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Visco-elastic behaviour exhibited by plastics is a __________ like behaviour. Combination of solid & liquid Neither solid nor liquid Liquid Solid Combination of solid & liquid Neither solid nor liquid Liquid Solid ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Unbreakable crockeries are made from __________ polymers. Polystyrene Polyurathane Polystyrene Melamine Polystyrene Polyurathane Polystyrene Melamine ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of Phenol formaldehyde resins Cross linked polystyrene Polyamides Polyesters Phenol formaldehyde resins Cross linked polystyrene Polyamides Polyesters ANSWER DOWNLOAD EXAMIANS APP
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