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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

The equipment frequently used for adiabatic humidification-cooling operation with recirculating liquid is_________________?
A Natural draft cooling tower
B Induced draft cooling tower
C Spray chamber
D None of these
Correct Answer: Spray chamber
Solvent used in extractive distillation___________________?
A Changes the relative volatility of the original components
B Should be of high volatility
C Should form azeotropes with the original components
D All A., B. and C.
Correct Answer: Changes the relative volatility of the original components
Weight of 1 m3 of humid air as compared to 1 m3 of dry air, under the same conditions, is_________________?
A Less
B More
C Same
D Unpredictable
Correct Answer: Less
Which of the following remains constant during evaporative cooling process with recirculated water supply ?
A Relative humidity
B Partial pressure of vapour
C Wet bulb temperature
D None of these
Correct Answer: Wet bulb temperature
If a two phase system is in physical equilibrium; then it means that, the_____________________?
A Escaping tendency of each component from the liquid phase to the vapor phase is exactly
B Temperature of the liquid phase is equal to that of the vapor phase
C Total pressure throughout the liquid phase is equal to that throughout the vapor phase
D All A., B. and C.
Correct Answer: All A., B. and C.
In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG ______________ the absorption factor?
A Increases with increase in
B Is one at unity value of
C Both A. and B.
D Neither A. nor B.
Correct Answer: Both A. and B.
If a1 and a2 are the relative volatilities when the pressure in the distillation column is 1 and 2 atm respectively. Pick out the correct statement ?
A a1 = a2
B a1 = 2a2
C a1 = 0.5 a2
D None of these
Correct Answer: None of these
Percentage saturation is _______________ the relative saturation?
A Always smaller than
B Always greater than
C Not related to
D None of these
Correct Answer: Always smaller than
In an interphase mass transfer process, the lesser the solubility of a given solute in a liquid, the higher are the chances that the transfer process will be_________________?
A Liquid phase resistance-controlled
B Gas phase resistance controlled
C Impossible
D Driven by a non-linear driving force
Correct Answer: Gas phase resistance controlled
Water-ethyl alcohol solution can be concentrated (in respect of alcohol concentration) by ________________ distillation?
A Atmospheric
B Vacuum
C High pressure
D None of these
Correct Answer: Vacuum
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