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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 paper industry, paper is dried in a _____________ dryer ?
A Tunnel
B Heated cylinder
C Conveyor
D Festoon
Correct Answer: Heated cylinder
Relative humidity is the ratio of the______________________?
A Partial pressure of the vapour to the vapour pressure of the liquid at room temperature
B Partial pressure of the vapour to the vapour pressure of the liquid at gas temperature
C Actual humidity to saturation humidity
D None of these
Correct Answer: Partial pressure of the vapour to the vapour pressure of the liquid at gas temperature
As complete saturation of an adsorbent is approached, the differential heat of adsrop-tion approaches ____________________?
A That of normal condensation
B Integral heat of adsorption
C Zero
D None of these
Correct Answer: That of normal condensation
Which of the following solutions will follow Raoult’s law most closely ?
A A solution of benzene, toluene and o-xylene
B 35% solution of camphor in water
C 35% solution of NH3 in water
D A solution of polar organic compounds (not of homologue of a series)
Correct Answer: A solution of benzene, toluene and o-xylene
Mass transfer rate between two fluid phases does not necessarily depend on the ______________ of the two phases?
A Chemical properties
B Physical properties
C Degree of turbulence
D Interfacial area
Correct Answer: Chemical properties
In a counter-current liquid extractor___________________?
A Both liquids flow at fixed rate
B Both liquids can have any desired flow rate
C Only one of the liquids may be pumped at any desired rate
D Liquid’s flow rate depends upon the temperature and pressure
Correct Answer: Only one of the liquids may be pumped at any desired rate
On moving the feed line (q-line) from saturated liquid feed (vertical position) to saturated vapor feed (horizontal feed), if the slope of both the operating lines are to be increased, then it will result in______________________?
A Greater degree of separation with a fixed number of trays
B Increased reboiler load
C Increased reflux ratio
D None of these
Correct Answer: Increased reflux ratio
Mass transfer co-efficient (K) and diffusivity D. are related according to film theory as______________________?
A K ∝ D
B K ∝√D
C K ∝ D1.5
D K ∝ D2
Correct Answer: K ∝ D
The caking of crystals can be prevented by _____________________?
A Maintaining high critical humidity
B Maintaining low critical humidity
C Coating the product with inert material
D Both A. and C.
Correct Answer: Both A. and C.
In distillation, overhead product contains ______________________?
A Only one component
B Two components
C Any number of components
D Only saturated liquid
Correct Answer: Any number of components
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