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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 multiple effect evaporator as compared to a single effect evaporator of the same capacity has _________________?
A Lower heat transfer area
B Lower steam economy
C Higher steam economy
D Higher solute concentration in the product
Correct Answer: Higher steam economy
Electro-magnetic spectrum range, which is important for radiation varies from _____________ microns?
A 1 to 100
B 0.5 to 50
C 10 to 100
D 100 to 1000
Correct Answer: 0.5 to 50
In a gas-liquid shell and tube heat exchanger, the_________________?
A Presence of a non-condensable gas decreases the condensing film co-efficient
B Gases under high pressure are routed through the tube side, because high pressure gases are
C Gases to be heated/cooled is normally routed through the shell side, because the corrosion
D All A, B. & C.
Correct Answer: All A, B. & C.
In a shell and tube heat exchanger, square pitch compared to triangular pitch__________________?
A Gives a higher shell side pressure drop
B Gives a lower shell side pressure drop
C Can pack more surface area into a shell of given diameter
D None of these
Correct Answer: Gives a higher shell side pressure drop
Planck’s distribution law is valid for _____________ bodies?
A Black
B White
C Coloured
D All A., B. & C.
Correct Answer: Coloured
Steam trap is used to_________________?
A Condense the steam flowing in the pipeline
B Remove water resulting from partial condensation of steam
C Stop the supply of steam
D None of these
Correct Answer: Remove water resulting from partial condensation of steam
LMTD for counter-flow and parallel flow heat exchanger will be the same, when the_________________?
A Cold fluid is heated to a certain temperature by condensing steam (isothermal fluid)
B Outlet temperature of both the hot and cold fluid are same
C Outlet temperature of hot fluid is less than the outlet temperature of the cold fluid
D None of these
Correct Answer: Cold fluid is heated to a certain temperature by condensing steam (isothermal fluid)
Which of the following parameters of the fluid is not very important, while deciding its route in a shell and tube heat exchanger ?
A Corrosiveness & fouling characteristics
B Pressure
C Viscosity
D Density
Correct Answer: Density
It is desired to concentrate a 20% salt solution (20 kg of salt in 100 kg of solution) to a 30% salt solution in an evaporator. Consider a feed of 300 kg/min at 30°C. The boiling point of the solution is 110°C, the latent heat of vaporisation is 2100 kJ/kg and the specific heat of the solution is 4 kJ/kg.K. The rate at which the heat has to be supplied in (kJ/min) to the evaporator is____________________?
A 3.06 × 105
B 6.12 × 105
C 7.24 × 105
D 9.08 × 105
Correct Answer: 3.06 × 105
Fqra cold viscous feed, backward feed gives _____________ than forward feed?
A A higher capacity
B A lower capacity
C Lower economy
D None of these
Correct Answer: A higher capacity
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