Chemical Engineering MCQs

6108 MCQs  (Page 169 of 611)

Attempt Chemical Engineering Quiz
Which is not concerned directly with mass transfer ?
A. Schmidt number
B. Sherwood number
C. Lewis relationship
D. Froude number
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Experimental determination of ________________ is done by wetted wall column method?
A. Diffusion co-efficient
B. Mass transfer co-efficient
C. Ntu
D. None of these
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Which of the following provides maximum contact surface for a liquid-vapour system ?
A. Packed tower
B. Bubble-cap plate column
C. Sieve-plate column
D. Wetted wall column
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Most important factor to be considered in the selection of packings for absorbers is the ______________ of packing?
A. Size
B. Durability
C. Porosity
D. Cost
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Ammonia present in the coke oven gas is removed by washing with___________________?
A. Caustic solution
B. Dilute ammoniacal liquor
C. Dilute hcl
D. Ethanolamine
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At the boiling point of the liquid at the prevailing pressure, the saturated absolute humidity becomes_____________________?
A. 1
B. 0
C. ∞
D. None of these
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Measurement of the interfacial area of mass transfer is achieved easily & accurately in case of a _______________ column?
A. Spray
B. Packed
C. Bubble cap plate
D. Wetted wall
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Which of the following is directly concerned with Psychrometry ?
A. Lewis relationship
B. Galileo number
C. Weber number
D. Dean number
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In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be___________________?
A. At ground level
B. 2 metres above the ground
C. 5 metres above ground
D. 10 metres above ground
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High pressure at the bottom of a distillation tower handling heat sensitive materials results in____________________?
A. Thermal decomposition of bottoms
B. Increased relative volatility
C. Erosion of the tower
D. Very efficient operation
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Word of the Day
26 Jul
Simultaneously
at the same time.
ایک ہی وقت میں، ایک ساتھ، بیک وقت

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