Related Questions

Exposure to mixtures of chemicals are greater than expected on the basis of effects of exposure to each chemical individually. This is known as
A Additives
B Antagonism
C Synergism
D Independent
Pumping of a corrosive liquid is generally preferred to be done by a __________ pump, as it can be made of a variety of materials including plastics.
A Piston
B Gear
C Positive displacement
D Sump
__________ moulding process can not be used for thermoplastic plastics.
A Compression
B Extrusion
C Injection
D None of these
__________ moulding is used for shaping of thermosetting plastics exclusively.
A Compression
B Injection
C Transfer
D Extrusion
Most of the plastics are safe to be used upto a maximum temperature of __________ °C.
A 100
B 150
C 350
D 450
The tensile strength of plastics ranges from __________ kg/mm².
A 10 to 50
B 50 to 100
C 0.01 to 0.1
D 0.1 to 10
Visco-elastic behaviour exhibited by plastics is a __________ like behaviour.
A Solid
B Liquid
C Combination of solid & liquid
D Neither solid nor liquid
In __________ process, there is an increase in entropy with no degradation of energy.
A Isothermal expansion
B Isochoric heat addition
C Polytropic expansion
D Isobaric heat addition
____ the passage of light, many new plastics are processed using technologies rivaling those used in the manufacture of computer chips.
A To better permit
B For the better of
C Permitting better
D It is better for
Plasticisers are added to synthetic plastics to
A Impart flexibility
B Improve workability during fabrication
C Develop new improved properties not present in the original resin
D All of the above

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