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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

During constant rate period, the rate of drying decreases with the______________________?
A Decrease in air temperature
B Increase in air humidity
C Both A. and B.
D Neither A. nor B.
Correct Answer: Both A. and B.
Packed column distillation is limited to the column _____________ metres?
A Height < 6
B Diameter < 0.6
C Both A. & B.
D Neither A. nor B.
Correct Answer: Both A. & B.
In case of constant underflow extraction operation, the _______________________ at all solute concentration?
A Solids are drained to the same extent
B Ratio of the insoluble to solution is constant
C Both A. & B.
D Neither A. nor B.
Correct Answer: Both A. & B.
According to Poiseuille’s law, the permeability for gas flow through a capillary is proportional to (where, μ = gas viscosity)___________________?
A μ
B 1/μ
C √μ
D μ2
Correct Answer: μ
Even though bubble cap towers are very effective for humidification operation, they are not used commonly in industries, because of the_________________?
A High evaporation losses of water
B High pressure drop of the gas
C Difficulty in its fabrication
D None of these
Correct Answer: High pressure drop of the gas
Pick out the correct relationship. (Where, Ri = internal reflux ratio Ro = external reflux ratio.) ?
A (1 + Ro) = Ro/Ri
B (1 – Ro) = Ro/Ri
C (1 + Ri) = Ro/Ri
D (1 – Ri) = Ro/Ri
Correct Answer: (1 + Ro) = Ro/Ri
The humid volume may be increased by increasing the____________________?
A Temperature at constant humidity
B Humidity at constant temperature
C Both A. and B.
D Neither A. nor B.
Correct Answer: Both A. and B.
Tower diameter may be decreased by__________________?
A Using higher reflux ratio
B Use of increased tray spacing
C Increasing the liquid flow rate
D Increasing the vapour flow rate
Correct Answer: Use of increased tray spacing
Raschig ring made of porcelain cannot be used for treating concentrated___________________?
A Hydrochloric acid
B Nitric acid
C Alkalis
D Sulphuric acid
Correct Answer: Alkalis
Use of natural draft cooling tower is practised, when the air has low ?
A Humidity
B Temperature
C Both A. & B.
D Neither A. nor B.
Correct Answer: Both A. & B.
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