Chemical Engineering MCQs

6108 MCQs  (Page 216 of 611)

Attempt Chemical Engineering Quiz
The diffusivity D. in a binary gas mixture is related to the temperature (T) as________________________?
A. D ∝ t
B. D ∝ t0.5
C. D ∝ t1.5
D. D ∝ t2
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The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are same for, NPr = NSc = _________________?
A. 1
B. 0.5
C. 10
D. 0
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At a fixed total pressure, humidity depends only on the _______________________?
A. Partial pressure of vapour in the mixture
B. Heat capacity of the vapour
C. Density of the vapour
D. None of these
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In extractive distillation, solvent is_____________________?
A. Added to alter the relative volatility of the mixture
B. Of high volatility
C. Present in overhead stream
D. Of high viscosity to give high tray efficiency
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During drying operation, it is easier to remove the ________________ moisture ?
A. Equilibrium
B. Critical
C. Unbound
D. Bound
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Which of the following quantities need not be fixed before starting the design of a cocurrent absorber ?
A. Heat gain or loss
B. Flow rate of entering liquid
C. Flow rate of gas
D. None of these
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Which of the following parameters remains almost constant during adiabatic saturation of unsaturated air ?
A. Dry bulb temperature
B. Dew point
C. Wet bulb temperature
D. None of these
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In an absorber, HETP does not vary with the____________________?
A. Flow rate of liquid
B. Flow rate of gas
C. Type and size of packing
D. None of these
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Leaching of sugar from sugar beets is done by___________________?
A. Hot water
B. Hexane
C. Dilute h2so4
D. Lime water
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In case of liquid-liquid binary diffusion, diffusivity of one constituent into another is not dependent on the__________________?
A. Temperature and pressure
B. Concentration
C. Nature of the constituents
D. None of these
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Word of the Day
27 Jul
Widen
make or become wider.
چوڑا ہونا، کشادہ کرنے کا عمل

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