A. Polythene
B. Teflon
C. Bakelite
D. PVC
Related Mcqs:
- The generic chemical name for the class of polymers which are commercially known as nylons is______________________?
A. Polyolefins
B. Polyamide
C. Polyacrylate
D. Polyurethane - Styrene butadiene rubber is commercially manufactured by__________________?
A. Bulk polymerisation
B. Suspension polymerisation
C. Solution polymerisation
D. Emulsion polymerisation - 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 - 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 - 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 - _____________ is a thermosetting plastic ?
A. PVC
B. Polythene
C. Bakelite
D. Polystyrene - 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. - Thermosetting plastic materials___________________?
A. Can be repeatedly melted
B. Is useful for melt casting
C. Cannot be melted after forming
D. Is useful for spinning - Plastic articles are normally produced by _____________ moulding?
A. Green sand
B. Injection
C. Shell
D. Dry sand
