Softening point of high density polythene is about ______________ °C?
A. 85
B. 135
C. 165
D. 205
Polymer Technology
_______________________ is not a condensation polymer ?
_______________________ is not a condensation polymer ?
A. Teflon
B. Nylon-66
C. Dacron
D. Polystyrene
Styrene butadiene rubber is commercially manufactured by__________________?
Styrene butadiene rubber is commercially manufactured by__________________?
A. Bulk polymerisation
B. Suspension polymerisation
C. Solution polymerisation
D. Emulsion polymerisation
Adipic acid is an intermediate in the manufacture of _____________________?
Adipic acid is an intermediate in the manufacture of _____________________?
A. Perspex
B. Nylon-66
C. Polystyrene
D. Bakelite
Nylon-6 is a_________________?
Nylon-6 is a_________________?
A. Polyamide
B. Thermosetting resin
C. Polyester
D. None of these
Plexiglass (also called Lucite) because of its high optical transparency is used for making lenses. It is chemically_________________?
Plexiglass (also called Lucite) because of its high optical transparency is used for making lenses. It is chemically_________________?
A. Polymethyl methacrylate (PMMA)
B. Polytetrafluroethylene (PTFE)
C. Polycarbonates
D. Phenolic resins
Rexine (also called artificial leather), which is used for making table cover, automobile seat cover, shoes etc. is made by coating thick cloth with molten_______________?
Rexine (also called artificial leather), which is used for making table cover, automobile seat cover, shoes etc. is made by coating thick cloth with molten_______________?
A. Teflon
B. Bakelite
C. SBR
D. PVC
Commercial production of polypropylene employs _____________ polymerisation?
Commercial production of polypropylene employs _____________ polymerisation?
A. Emulsion
B. Suspension
C. Solution
D. Bulk
Nylon-66 is a polyamide of __________________?
Nylon-66 is a polyamide of __________________?
A. Hexamethylene diamine and adipic acid
B. Adipic acid and methyl amine
C. Vinyl chloride and formaldehyde
D. None of these
The only natural thermoplastic resin, which is a product of animal life is ____________________?
The only natural thermoplastic resin, which is a product of animal life is ____________________?
A. Rosin
B. Shellac
C. Amber
D. Copal