A. Decreases with increase in molecular weight
B. Decreases with increase in temperature
C. Increases with increase in temperature
D. Does not vary with temperature rise
Related Mcqs:
- Melt spinning of polymers involves the forcing of polymer melt through spinnerates (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?
A. Acrylic
B. Polyester
C. Nylon 6:6
D. Polypropylene - 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?
A. Polythene
B. PVC
C. Rayon
D. Polyvinyl acetate - In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross-linked polymer ?
A. Bakelite (phenol formaldehyde)
B. Polyester
C. Polythene
D. Nylon-6 - 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?
A. Viscose rayon
B. Acrylic
C. Polyvinyl acetate
D. Saturated polyester - Synthetic polymer produced by using terephthalic acid and ethylene glycol is _________________?
A. Terylene
B. Nylon-66
C. PVC
D. Polystyrene - Which of the following is an inorganic polymer ?
A. Teflon
B. Perspex
C. Silicones
D. Bakelite - ____________ polymer is used for making unbreakable crockery?
A. Thermoplastic
B. Melamine
C. Addition
D. None of these - Glyptal used in the manufacture of paints & lacquers is a _____________ polymer?
A. Polyamide
B. Polystyrene
C. Polyester
D. Polyacrylonitrile - _______________________ is not a condensation polymer ?
A. Teflon
B. Nylon-66
C. Dacron
D. Polystyrene - Which of the following is not a polymer of two monomers ?
A. Teflon
B. Bakelite
C. SBR
D. None of these
