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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

With increase in the concentration of the adsorbate, the integral heat of adsorption____________________?
A Increases
B Decreases
C Remains unchanged
D May increase or decrease; depends on the type of adsorbate
Correct Answer: Decreases
Air initially at 101. 3 kPa and 40°C and with a relative humidity of 50%, is cooled at constant pressure to 30°C. The cooled air has a____________________?
A Higher dew point
B Higher absolute (specific) humidity
C Higher relative humidity
D Higher wet bulb temperature
Correct Answer: Higher relative humidity
An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is ?
A 9.21
B 4.605
C 100
D 0.001
Correct Answer: 4.605
_______________ columns are used for liquid dispersion in a continuous gas phase ?
A Packed
B Pulse
C Bubble cap
D Sieve plate
Correct Answer: Packed
The efficiency of a plate column will be maximum, when the flow is ideal __________________ the plate?
A Across
B Above
C Both A. & B.
D Neither A. nor B.
Correct Answer: Both A. & B.
Separation of a mixture of two gases by absorption in the liquid solvent depends upon the difference in their____________________?
A Viscosity
B Density
C Solubility
D Relative volatility
Correct Answer: Solubility
Priming in a distillation column_________________?
A Results from very low gas velocity
B Is desirable from point efficiency consideration
C Is characterised by the presence of foam throughout the space between trays
D Reduces the overall pressure drop
Correct Answer: Is characterised by the presence of foam throughout the space between trays
The amount of steam required per unit quantity of distillate in case of steam distillation will be reduced by __________________?
A Raising the temperature
B Lowering the total pressure
C Both A. and B.
D Neither A. nor B.
Correct Answer: Both A. and B.
The dew point of a saturated gas phase equals the ________________ temperature?
A Gas
B Room
C Wet bulb
D None of these
Correct Answer: Gas
The relative humidity of air decreases in-spite of an increase in the absolute humidity, when the____________________?
A Temperature rises
B Pressure rises
C Temperature falls
D Pressure falls
Correct Answer: Temperature rises
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