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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

A liquid mixture contains 30% o-xylene, 60% p-xylene and 10%. m-xylene (all percentages in w/w). Which of the following statements would be true in respect of this mixture ?
A The mixture exhibits an azeotrope at 101.3 kPa
B The composition of the mixture, in percent by volume is: o-xylene 30, p-xylene 60. and mxylene
C The composition of the mixture in mole percent is: o-xylene 30, p-xylene 60 and m-xyoene 10
D The mixture contain optical isomers
Correct Answer: The mixture exhibits an azeotrope at 101.3 kPa
In case of binary distillation, increasing the reflux ratio above optimum does not result in the increase of_______________________?
A Area between operating line and 45° diagonal x-y diagram
B Condenser and reboiler surfaces
C Tower cross-section
D None of these
Correct Answer: Area between operating line and 45° diagonal x-y diagram
Which of the following assumes constant molal vaporisation and overflow ?
A McCabe-Thiele method
B Ponchan-Savarit method
C Enthalpy concentration method
D Plate absorption column
Correct Answer: McCabe-Thiele method
Which of the following binary systems is an example of a maximum boiling azeotrope ?
A Water-hydrochloric acid
B Acetone-carbon disulphide
C Water-ethyl alcohol
D n-heptane-n-octane
Correct Answer: Water-hydrochloric acid
Channelling is most severe_____________________?
A In towers packed with stacked packing
B In towers packed randomly with crushed solids
C In dumped packing of regular units
D At very high liquid flow rate
Correct Answer: In towers packed with stacked packing
When the liquid phase and vapour phase of a binary system obeys Raoult’s and Dalton’s law respectively, the relative volatility is the ratio of________________________?
A Vapour pressure of component A to that of component B
B Vapour pressure of component A to the total pressure
C Vapour pressure of component A to the partial pressure of A
D Partial pressure of component A to the total pressure
Correct Answer: Vapour pressure of component A to that of component B
Flooding in a column results due to___________________?
A High pressure drop
B Low pressure drop
C Low velocity of the liquid
D High temperature
Correct Answer: High pressure drop
Raoult’s law is applicable to the_____________________?
A Ideal solutions
B Real solutions
C Mixture of water and alcohol
D Non-ideal gases
Correct Answer: Ideal solutions
Calcium ammonium nitrate (a fertiliser) is dried in a _________________ dryer?
A Rotary
B Vacuum
C Tunnel
D Tray
Correct Answer: Rotary
Pick out the system with minimum boiling azeotrope at 1 atm ?
A Benzene-toluene
B Ethyl alcohol-water
C Hydrochloric acid-water
D All A., B. and C.
Correct Answer: Ethyl alcohol-water
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