A. Injection
B. Transfer
C. Extrusion
D. Compression
Related Mcqs:
- Plastic articles are normally produced by _____________ moulding?
A. Green sand
B. Injection
C. Shell
D. Dry sand - Flexible plastic pipes are made of___________________?
A. High density polyethylene (HDPE)
B. Low density polyethylene (LDPE)
C. Polypropylene
D. Unsaturated polyester - _____________ moulding is used for shaping of thermosetting plastics exclusively?
A. Compression
B. Injection
C. Transfer
D. Extrusion - 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 - Collapsible tubes for tooth paste are produced by _____________ extrusion?
A. Direct
B. Indirect
C. Impact
D. None of these - _____________ tubes are good substitute for human blood vessels on heart by-pass operation?
A. PVC
B. Polythene
C. Teflon/Dacron
D. Polystyrene - Polystyrene is a ____________ plastic at room temperature?
A. Ductile
B. Brittle
C. Malleable
D. None of these - Paper like thin plastic articles can be produced by_________________?
A. Blow moulding
B. Vacuum thermo forming
C. Injection moulding
D. None of these - Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinary temperature. Which of the following is not a plasticiser ?
A. Ethylene glycol
B. Stearic acid estors
C. Tricresyl phosphate
D. Esters of phthalic acid - Which of the following is the lowest cost plastic commercially available ?
A. Polythene
B. Teflon
C. Bakelite
D. PVC
