A.Elastomer
B.None of these
C.Thermoplastic
D.Addition polymer
Explanation: The correct answer is None of these.
Submitted by: Academy of Pakistan
Chemical Engineering MCQs: 8,342 practice questions with answer choices and available explanations. Page 300 of 557.
Chemical Engineering MCQs
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A.Greater the degree of cross-linking in the polymer, lesser is its solubility
B.Polymers having more aliphatic character are more soluble in aliphatic solvents, while those polymers having more aromatic character are more soluble in aromatic solvents
C.High molecular weight polymers on dissolving gives solution of very low viscosity
D.Swelling tendency or solubility of polymers in a particular solvent decreases with increase in molecular weight of the solvent
Explanation: The correct answer is High molecular weight polymers on dissolving gives solution of very low viscosity.
Submitted by: Academy of Pakistan
A.Both B. and C.
B.Temperature
C.Pressure
D.Humidity
Explanation: The correct answer is Both B. and C..
Submitted by: Academy of Pakistan
Pump used for the transportation of molten sodium in a fast breader reactor is a/an ________ pump?
0A.Gear
B.Plunger
C.Electromagnetic
D.Reciprocating
Explanation: The correct answer is Electromagnetic.
Submitted by: Academy of Pakistan
A.Is used in oceanographic and space exploration applications
B.None of these
C.Cannot be welded
D.Exists in three allotropic forms
Explanation: The correct answer is Is used in oceanographic and space exploration applications.
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A.Increase in aromatic content
B.Decrease in paraffin content
C.Higher H/C ratio
D.Increase in thermal energy per unit weight
Explanation: The correct answer is Decrease in paraffin content.
Submitted by: Academy of Pakistan
A.20
B.5
C.35
D.10
Explanation: The correct answer is 20.
Submitted by: Academy of Pakistan
A.Low reactivity of carbonised residue containing high proportions of iron & sulphur
B.Thick fire bed and preheated primary air
C.Low forced draught and fuel bed temperature
D.All A., B. and C.
Explanation: The correct answer is All A., B. and C..
Submitted by: Academy of Pakistan
A.Radiation
B.Conduction
C.Forced convection
D.Natural convection
Explanation: The correct answer is Radiation.
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A.Film forming materials
B.Plasticiser
C.Fibers
D.Paint & varnish
Explanation: The correct answer is Fibers.
Submitted by: Academy of Pakistan
A.Hot blast stove
B.Wall of coke oven
C.Blast furnace
D.Cupola
Explanation: The correct answer is Wall of coke oven.
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A.Higher yield
B.Neither A. nor B.
C.Both A. and B.
D.Low final boiling point product
Explanation: The correct answer is Low final boiling point product.
Submitted by: Academy of Pakistan
A.Passing it through electrostatic precipitator
B.Absorbing in ethanolamine
C.Adsorbing on palladium
D.Scrubbing with wash oil
Explanation: The correct answer is Scrubbing with wash oil.
Submitted by: Academy of Pakistan
A.Phenol formaldehyde
B.Polychlorophrene
C.Polyurethane
D.Styrene butadiene rubber (SBR)
Explanation: The correct answer is Polychlorophrene.
Submitted by: Academy of Pakistan
A.Dilute HCl
B.Dilute HNO3
C.Hydrofluoric acid
D.Dilute H2SO4
Explanation: The correct answer is Hydrofluoric acid.
Submitted by: Academy of Pakistan