M C Q s D r i v e

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.

In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is_________________?
A Equal to the heat of formation of surface compound
B Equal to the heat of wetting
C Zero
D Called integral heat of adsorption
Correct Answer: Equal to the heat of wetting
A solid is being dried in the linear drying rate regime from moisture content Xo to XF. The drying rate is zero at X = 0 and the critical moisture content is the same as the initial moisture Xo. The drying time for M = (Ls/ARc) is (where, L = total mass of dry solid, A = total surface area for drying Rc = Constant maximum drying rate per unit area X = moisture content (in mass of water/mass of dry solids)) ?
A M(Xo – XF)
B M(Xo/XF)
C M ln(Xo/XF)
D MXo ln(Xo/XF)
Correct Answer: MXo ln(Xo/XF)
The dew point of an unsaturated gas-vapor mixture does not depend upon the _________________ of the mixture?
A Composition
B Temperature
C Total pressure
D All A, B. and C.
Correct Answer: Temperature
The Hatta number is important in_________________?
A Multi-component distillation
B Binary distillation
C Gas absorption without chemical reaction
D Gas absorption with chemical reaction
Correct Answer: Gas absorption with chemical reaction
Freundlich equation applies to the adsorption of solute from___________________?
A Dilute solutions, over a small concentration range
B Gaseous solutions at high pressure
C Concentrated solutions
D None of these
Correct Answer: Dilute solutions, over a small concentration range
The slope of 9-line is determined by the__________________?
A Reflux ratio
B Plate efficiency to be achieved
C Thermal condition of the feed
D Relative volatility
Correct Answer: Thermal condition of the feed
For a binary mixture with low relative volatility___________________?
A Use steam distillation
B Use molecular distillation
C Use high pressure distillation
D An azeotrope may be formed during distillation
Correct Answer: An azeotrope may be formed during distillation
The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m2/m3)_________________?
A 500
B 1200
C 900
D 800
Correct Answer: 500
Plate efficiency in a distillation column is reduced due to the ______________ of liquid?
A Entrainment
B Foaming
C Weeping & dumping
D All A., B. & C.
Correct Answer: All A., B. & C.
In extraction, as the temperature increases, the area of heterogeneity (area covered by binodal curve)____________________?
A Decreases
B Increases
C Remains unchanged
D None of these
Correct Answer: Decreases