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Mass Transfer MCQs | Page - 41

Dear candidates you will find MCQ questions of Mass Transfer here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

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Mr. Dubey • 51.17K Points
Coach

Q. 401) In paper industry, paper is dried in a __________ dryer.

(A) Tunnel
(B) Heated cylinder
(C) Conveyor
(D) Festoon
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Mr. Dubey • 51.17K Points
Coach

Q. 402) Tray spacing in a distillation column of dia 10-12 ft. used in petroleum refinery may be around __________ inches.

(A) 5
(B) 30
(C) 60
(D) 100
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Mr. Dubey • 51.17K Points
Coach

Q. 403) Which of the following plays an important role in problems of simultaneous heat and mass transfer?

(A) Lewis number
(B) Schmidt number
(C) Prandtl number
(D) Sherwood number
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Mr. Dubey • 51.17K Points
Coach

Q. 404) In a moderately sized packed absorption tower, channelling (which is most severe with stacked packings) can be minimised by taking the ratio of tower diameter to packing diameter

(A) > 4 :1
(B) < 8 : 1
(C) > 8:1
(D) < 6:1
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M

Mr. Dubey • 51.17K Points
Coach

Q. 405) If f = moles of vapour present per mole of feed, then the slope of feed line is (McCabeThiele method)

(A) (1 - f)/f
(B) - (f - 1)/f
(C) -1/f
(D) -f/(1 - f)
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M

Mr. Dubey • 51.17K Points
Coach

Q. 406) Pick out the wrong statement.

(A) The operating line always lies above the equilibrium solubility curve in case of a single component absorber
(B) The operating line always lies below the equilibrium solubility curve in case of a single component stripper
(C) The operating pressure in solvent extraction system should be below vapor pressures of all components
(D) The solubility of a particular gas in ideal solution in any solvent is always the same
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Mr. Dubey • 51.17K Points
Coach

Q. 407) Mass transfer co-efficient of liquid is

(A) Affected more by temperature than that for gases
(B) Affected much less by temperature than that for gases
(C) Not affected by the temperature
(D) None of these
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Mr. Dubey • 51.17K Points
Coach

Q. 408) Heat sensitive materials with very high latent heat of vaporisation may be economically separated using

(A) Liquid extraction
(B) Distillation
(C) Evaporation
(D) Absorption
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M

Mr. Dubey • 51.17K Points
Coach

Q. 409) The reciprocal of stripping factor is termed as

(A) Selectivity index
(B) Relative volatility
(C) Absorption factor
(D) Murphree efficiency
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M

Mr. Dubey • 51.17K Points
Coach

Q. 410) A distillation column with N plates is being operated under normal conditions. At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are being withdrawn and feed to the column is stopped). At the new steady state,

(A) Composition of vapors and that of liquid do not vary throughout the column
(B) Reboiler load and condenser load are minimum
(C) The top and bottom compositions are unchanged with and without total reflux
(D) The top and bottom compositions correspond to the maximum enrichment available
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