Related Questions

Which of the following is not a thermoplastic material?
A Epoxy polymer
B PVC
C Polystyrene
D Polythene
Thermocole (expanded polystyrene) is not used for
A Low temperature thermal insulation as in refrigerator and air conditioners
B Accoustic control and ceiling for building
C High temperature thermal insulation in furnaces
D Packing of delicate electronic gadgets
Which paint contains polystyrene as a base?
A Synthetic rubber
B Enamel
C Aluminium
D Emulsion
Polystyrene is a __________ plastic at room temperature.
A Ductile
B Brittle
C Malleable
D None of these
Styrene (a monomer for the production of polystyrene) is commercially produced by
A Catalytic dehydrogenation of ethyl benzene
B Dehydration of ethyl alcohol followed by hydrogenation
C Reacting ethylene oxide with acetal-dehyde
D Fermentation of starch
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 acetal-dehyde
D Fermentation of starch
__________ moulding process can not be used for thermoplastic plastics.
A Compression
B Extrusion
C Injection
D None of these
Which of the following is a thermoplastic?
A Polystyrene
B Ethylene
C Propylene
D Ortho Xylene
Thermoplastic materials are those materials which
A Do not become hard with the application of heat and pressure and no chemical change occurs
B Are flexible and can withstand considerable wear under suitable conditions
C Are formed into shape under heat and pressure and results in a permanently hard product
D Are used as a friction lining for clutches and brakes
Thermoplastic materials
A Do not soften on application of heat
B Are heavily branched molecules
C Are solvent insoluble
D None of these

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