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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

All Topics  9594

In case of non-ideal gases and liquids, the molal diffusivity ________________?
A Varies inversely as the pressure
B Varies directly as the pressure
C Is independent of pressure
D Is equal to the volumetric diffusivity
Correct Answer: Is independent of pressure
Unit of molal diffusivity is____________________?
A cm2/sec gm . mole
B gm moles/cm2 . sec
C gm moles/cm. sec
D gm moles/cm2. sec
Correct Answer: gm moles/cm. sec
Milk is dried usually in a __________________ dryer?
A Freeze
B Spray
C Tray
D Rotary
Correct Answer: Spray
Penetration model (theory) for mass transfer was enunciated by _____________________?
A Danckwerts
B Toor and Marcello
C Higbie
D Kissinevskii
Correct Answer: Higbie
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
Correct Answer: Dilute solution and isothermal operation
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
Correct Answer: 0.152
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 moisture content is produced
C Equipment size required is smaller
D All A , B. & C.
Correct Answer: All A , B. & C.
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
Correct Answer: None of these
In case of liquids, the binary diffusivity is proportional to (where, T = temperature) _____________________?
A T
B √T
C T2
D 1/T
Correct Answer: T
Hypersorption refers to a ________________ process?
A Fixed bed absorption
B Moving bed absorption
C Fixed bed adsorption
D Moving bed adsorption
Correct Answer: Moving bed adsorption
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