A. Direct
B. Indirect
C. Impact
D. None of these
Related Mcqs:
- All thermoplastic, thermosetting & elastic materials can be processed in a extrusion machine, however it cannot be used for the production of plastic_______________?
A. Filaments
B. Pipes
C. Buckets
D. Tubings - _____________ tubes are good substitute for human blood vessels on heart by-pass operation?
A. PVC
B. Polythene
C. Teflon/Dacron
D. Polystyrene - Due to its excellent permeability to air/gas and oxidation resistance, the tubes of automobile tyres is made of________________?
A. Cold SBR
B. Butyl rubber
C. Bunai N
D. Buna S - Plastic tubes & pipes are generally made by ______________ moulding?
A. Injection
B. Transfer
C. Extrusion
D. Compression - Bristles of tooth brushes are made of_______________?
A. Nylon-6
B. Nylon-66
C. Polystyrene
D. PVC - The synthetic fibres produced from _____________ are known as rayon?
A. Lignin
B. Cellulose
C. Polyamides
D. Ethylene glycol - _____________ polymer is produced by the copolymerisation of vinyl chloride-vinyl acetate?
A. Fibrous
B. Leathery
C. Rubbery
D. Hard - Plastic articles are normally produced by _____________ moulding?
A. Green sand
B. Injection
C. Shell
D. Dry sand - Phenol formaldehyde is produced by condensation polymerisation. It is also known as_________________?
A. Teflon
B. Bakelite
C. Polyester
D. Nylon-66 - Styrene which is a monomer for the production of polystyrene, is commercially produced by the __________________?
A. Catalytic dehydrogenation of ethyl benzene
B. Dehydration of ethyl alcohol followed by hydrogenation
C. Reacting ethylene oxide with acetaldehyde
D. Fermentation of starch
