Chemical Engineering MCQs

6108 MCQs  (Page 176 of 611)

Attempt Chemical Engineering Quiz
Laboratory determination of the diffusivity of vapor is done by __________________ method?
A. Wetted wall column
B. Gilliland’s
C. Winkelmann’s
D. Wike’s
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Reverse osmosis is also called_________________?
A. Dialysis
B. Electrodialysis
C. Diffusion
D. Ultra-filtration
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Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in_________________?
A. Decreased solute solubility
B. Large minimum liquid to gas (l/g) ratio
C. Large number of trays
D. All a., b. and c.
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Dorr thickener is an equipment used for___________________?
A. Classification
B. Sedimentation
C. Clarification
D. Leaching
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The diffusivity D. in a binary gas mixture is related to the pressure (P) as__________________?
A. D ∝ p0.5
B. D ∝ 1/p0.5
C. D ∝ 1/p
D. D ∝ 1/p1.5
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With increase in temperature, the mutual solubility of two liquids___________________?
A. Increases
B. Decreases
C. Remains unchanged
D. Decreases exponentially
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A pure drug is administered as a sphere and as a cube. The amount of drug is the same in the two tablets. Assuming that the shape and size do not influence the mass transfer, the ratio of rate of dissolution in water at t = 0 for the cubic to spherical tablet is___________________?
A. 0.54
B. 1.04
C. 1.24
D. 1.94
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The operating cost of a distillation column at minimum reflux ratio is____________________?
A. Minimum
B. Maximum
C. Infinite
D. Zero
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___________________ extractor uses centrifugal force for separating the two phases?
A. Treybal
B. Scheibel
C. Podbielniak
D. None of these
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Mass transfer co-efficient is directly proportional to DAB according to the __________ theory?
A. Film
B. Penetration
C. Surface-renewal
D. None of these
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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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