Buna-S is a _______________ material?
Buna-S is a _______________ material?
A. Fibrous
B. Plastic
C. Resinous
D. Rubbery
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Poly-methyl-methacrylate (PMMA) is known as_______________?
Poly-methyl-methacrylate (PMMA) is known as_______________?A. Bakelite
B. Teflon
C. Perspex
D. Nylon-6Thermocol is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten__________________?
Thermocol is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten__________________?A. Saturated polyester
B. Polyurethane
C. Polystyrene
D. Either B. or C.Polyurethane cannot be used to make____________________?
Polyurethane cannot be used to make____________________?A. Automobile cushion
B. Thermal insulation in refrigerator
C. Coating and adhesive
D. Fibre reinforced plastic (FRP)Polymethyl methacrylate (PMMA) which is also known as Perspex and is produced by bulk polymerisation of methyl methacrylate is not a ______________ polymer?
Polymethyl methacrylate (PMMA) which is also known as Perspex and is produced by bulk polymerisation of methyl methacrylate is not a ______________ polymer?A. Thermoplastic
B. Thermosetting
C. Linear
D. Glass like transparentWhich of the following is an elastomer ?
Which of the following is an elastomer ?A. Thiokol
B. Phenol formaldehyde
C. Urea formaldehyde
D. PolystyrenePerspex can be used as a substitute of glass. Its monomer is__________________?
Perspex can be used as a substitute of glass. Its monomer is__________________?A. Methyl methacrylate
B. DMT
C. Butadiene
D. Tetrafluoroethylene