Poly-tetra-fluoro ethylene (PTFE) is known as_________________?
Poly-tetra-fluoro ethylene (PTFE) is known as_________________?
A. Dacron
B. Teflon
C. Bakelite
D. Celluloid
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Polyvinyl acetate is never used for making_________________?
Polyvinyl acetate is never used for making_________________?A. Moulded articles
B. Fibres
C. Adhesives
D. All A., B. & C.Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxidant used in rubber ?
Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxidant used in rubber ?A. Carbon
B. Alkylated diphenyl amine
C. Thiokol
D. MagnesiumPoly-methyl-methacrylate (PMMA) is known as_______________?
Poly-methyl-methacrylate (PMMA) is known as_______________?A. Bakelite
B. Teflon
C. Perspex
D. Nylon-6Which of the following is the lowest cost plastic commercially available ?
Which of the following is the lowest cost plastic commercially available ?A. Polythene
B. Teflon
C. Bakelite
D. PVCWhich of the following is not a condensation polymer ?
Which of the following is not a condensation polymer ?A. Bakelite
B. Melamine polymer
C. Poly-methyl-methacrylate (PMMA)
D. None of theseIn 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?
In case of dry sning of polymers, the polymer solution in a volatile solvent is forced through the snerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry sning is used for _______________ fibres?A. Polythene
B. PVC
C. Rayon
D. Polyvinyl acetate