Chemical Engineering MCQs

6108 MCQs  (Page 190 of 611)

Attempt Chemical Engineering Quiz
If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01; the humid heat in KJ/°Kg. is________________?
A. 0.31
B. 0.107
C. 0.017
D. 0.215
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In case of ______________ distillation, a solvent is added to alter the relative volatility of the mixture to be separated?
A. Molecular
B. Azeotropic
C. Extractive
D. Flash
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Moisture contained by a substance in excess of the equilibrium moisture is called the _______________ moisture?
A. Unbound
B. Free
C. Critical
D. Bound
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Hypersorption refers to a ________________ process?
A. Fixed bed absorption
B. Moving bed absorption
C. Fixed bed adsorption
D. Moving bed adsorption
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In case of liquids, the binary diffusivity is proportional to (where, T = temperature) _____________________?
A. T
B. √t
C. T2
D. 1/t
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The relative saturation of an unsaturated mixture of gas and vapor is independent of the___________________?
A. Nature of the vapor
B. Temperature of the mixture
C. Composition of the mixture
D. None of these
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Advantage of continuous drying over batch drying is that the_____________________?
A. Drying cost per unit weight of dried product is less
B. Product with more uniform mositure content is produced
C. Equipment size required is smaller
D. All a , b. & c.
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An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively. The humidity of air sample expressed as kg of water vapour/kg of dry air is__________________?
A. 0.048
B. 0.079
C. 0.122
D. 0.152
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For an absorber, both equilibrium and operating line will be straight for _______________________?
A. Concentrated solution and non-isothermal operation
B. Dilute solution and non-isothermal operation
C. Dilute solution and isothermal operation
D. Concentrated solution and isothermal operation
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Penetration model (theory) for mass transfer was enunciated by _____________________?
A. Danckwerts
B. Toor and marcello
C. Higbie
D. Kissinevskii
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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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