_____________ is a thermosetting plastic ?
_____________ is a thermosetting plastic ?
A. PVC
B. Polythene
C. Bakelite
D. Polystyrene
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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?
In case of wet sning of polymers, the polymer solution is forced through snerates into, a coagulating bath to give a filament form. Wet sning is not used in case of the _____________ fibres?A. Viscose rayon
B. Acrylic
C. Polyvinyl acetate
D. Saturated polyesterPolymethyl 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 transparent_____________ moulding is used for shaping of thermosetting plastics exclusively?
_____________ moulding is used for shag of thermosetting plastics exclusively?A. Compression
B. Injection
C. Transfer
D. ExtrusionPolypropylene is preferred to polythene, because the former is ____________________?
Polypropylene is preferred to polythene, because the former is ____________________?A. Non-inflammable
B. Harder
C. Stronger
D. Both B. & C.Which 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. PVCThe organic acid monomer in nylon-66 is __________________?
The organic acid monomer in nylon-66 is __________________?A. Sebacic acid
B. Terephthalic acid
C. Adipic acid
D. Benzoic acid