Plastic articles are normally produced by _____________ moulding?
Plastic articles are normally produced by _____________ moulding?
A. Green sand
B. Injection
C. Shell
D. Dry sand
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Amino resins are used in paper treatment to improve its__________________?
Amino resins are used in paper treatment to improve its__________________?A. Wet tear and bursting strength
B. Folding endurance
C. Wet rub resistance
D. All A., B. & C.Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styreneacrylonitrile copolymer with butadiene based elastomer, is a/an__________________?
Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styreneacrylonitrile copolymer with butadiene based elastomer, is a/an__________________?A. Rigid foam
B. Engineering plastic
C. Thermosetting polymer
D. Spongy rubberDacron (or Treylene) fibres as compared to nylon fibres have_____________________?
Dacron (or Treylene) fibres as compared to nylon fibres have_____________________?A. Better heat & acid resistant properties
B. Poorer resistance to alkalis
C. Poorer dyeability
D. All A., B. and C.The major constituent of laminate of safety glass, which holds the broken glass, pieces in their places during accident (and thus minimises the danger from flying glass fragments) is____________________?
The major constituent of laminate of safety glass, which holds the broken glass, pieces in their places during accident (and thus minimises the danger from flying glass fragments) is____________________?A. Polyvinyl alcohol
B. Polyvinyl acetate
C. Polyvinyl butyral
D. PVC_______________ practically possess no elasticity?
_______________ practically possess no elasticity?A. Vulcanite or ebonite
B. Spandex fibre
C. Polysulphide rubber
D. Epoxy resinTypical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is__________________?
Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is__________________?A. 7 kgf/cm2 and 70 °C
B. 1000 kgf/cm2 and 100°C
C. 7 kgf/cm2 and 700°C
D. 1 kgf/cm2 (gage) and 70°C