A.Joule-Thompson co-efficient
B.None of these
C.Specific heat at constant pressure (Cp)
D.Specific heat at constant volume (Cv)
Explanation: The correct answer is Joule-Thompson co-efficient.
Submitted by: Academy of Pakistan
Chemical Engineering MCQs: 8,342 practice questions with answer choices and available explanations. Page 351 of 557.
Chemical Engineering MCQs
Showing page 351 of 557 · 8,342 total solved questions available.
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A.Al2O3
B.ZrSO4
C.3Al2O3.2SiO2
D.ThO2
Explanation: The correct answer is 3Al2O3.2SiO2.
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A.Equal
B.More pronounced
C.Less pronounced
D.Data insufficient, can’t be predicted
Explanation: The correct answer is More pronounced.
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A.Increases
B.Remains unchanged
C.Decreases
D.Approach zero at 0°C
Explanation: The correct answer is Decreases.
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A.Surface tension
B.Dynamic viscosity
C.Pressure
D.Kinematic viscosity
Explanation: The correct answer is Kinematic viscosity.
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A.Plasticity
B.Creep
C.Ductility
D.Elasticity
Explanation: The correct answer is Creep.
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A.0.30
B.0.60
C.0.90
D.0.15
Explanation: The correct answer is 0.60.
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A.Addition polymer
B.Polyester
C.Condensation polymer
D.Both B. and C.
Explanation: The correct answer is Both B. and C..
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A.1600
B.4000
C.8500
D.800
Explanation: The correct answer is 1600.
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A.Less corrosion of tubes
B.Large temperature differentials
C.Low pressure drop
D.High heat transfer co-efficient
Explanation: The correct answer is Large temperature differentials.
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A.3,200
B.10,200
C.5,400
D.1,800
Explanation: The correct answer is 5,400.
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A.Characterisation factor of paraffinic crude oil is more than 12
B.Abel apparatus is used for determining flash points below 50°C
C.An oil having high susceptibility to change in viscosity with temperature changes, has a high viscosity index
D.Pensky-Marten apparatus is used for determining flash points above 50°C
Explanation: The correct answer is An oil having high susceptibility to change in viscosity with temperature changes, has a high viscosity index.
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A.Helical flight
B.Apron
C.Screw
D.Both B. & C.
Explanation: The correct answer is Both B. & C..
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A.Free energy of activation is lower
B.Entropy changes
C.Free energy of activation is higher
D.Initial concentration of the reactants remains constant
Explanation: The correct answer is Free energy of activation is higher.
Submitted by: Academy of Pakistan
A.The shear stress at the pipe (dia = D, length = L) wall in case of laminar flow of Newtonian fluids is (D/4L). Δp
B.Shear stress for Newtonian fluid is proportional to the rate of shear in the direction perpendicular to motion
C.With increase in the Mach number >0.6, the drag co-efficient decreases in case of compressible fluids
D.In the equation, T. gc = k. (du/dy)n the value of ‘n’ for pseudoplastic and Dilatant fluid are 1 respectively
Explanation: The correct answer is With increase in the Mach number >0.6, the drag co-efficient decreases in case of compressible fluids.
Submitted by: Academy of Pakistan