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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

Choose the set of pressure intensities that are equivalent ?
A 4.33 psi, 10 ft. of water, 8.83 inches of Hg
B 4.33 psi, 10 ft. of water, 20.7 inches of Hg
C 10 psi, 19.7 ft. of water, 23.3 inches of Hg
D 10 psi, 19.7 ft. of water, 5.3 inches of Hg
Correct Answer: 4.33 psi, 10 ft. of water, 8.83 inches of Hg
Consider two pipes of same length and diameter through which water is passed at the same velocity. The friction factor for rough pipe is f1 and that for smooth pipe is f2. Pick out the correct statement ?
A f1 = f2
B f1 < f2
C f1 > f2
D Data not sufficient to relate f1 & f2
Correct Answer: f1 > f2
Critical velocity in a pipe flow_________________?
A Increases as fluid viscosity increases
B Increases as pipe diameter increases
C Independent of fluid density
D None of these
Correct Answer: Increases as pipe diameter increases
The head loss due to sudden contraction is proportional to___________________?
A Velocity
B Velocity head
C Turbulence
D None of these
Correct Answer: Velocity
The continuity equation of fluid mechanics utilises the principle of conservation of _________________?
A Momentum
B Mass
C Energy
D Both B. & C.
Correct Answer: Mass
Existence of boundary layer in fluid flow is because of the_________________?
A Surface tension
B Fluid density
C Fluid viscosity
D Gravity forces
Correct Answer: Fluid viscosity
The energy loss over a length of pipeline according to Darcy-Weisbach equation for pipe flow is _______________ the mean velocity of flow?
A Directly proportional to
B Directly proportional to square of
C Inversely proportional to
D Inversely proportional to square of
Correct Answer: Directly proportional to
In case of end to end connection of two or more pipes in series, the ______________ each pipe?
A Same rate of flow passes through
B Head loss is same through
C Rate of flow in each pipe is proportional to the length of
D Total flow rate is the sum of flow rate in
Correct Answer: Same rate of flow passes through
What is the ratio of displacement thickness to nominal thickness for a linear distribution of velocity in the boundary layer on a flat plate ?
A 0.5
B 1
C 1.5
D 2
Correct Answer: 0.5
Foot valves are provided in the suction line of a centrifugal pump to ____________________?
A Avoid priming, every time we start the pump
B Remove the contaminant present in the liquid
C Minimise the fluctuation in discharge
D Control the liquid discharge
Correct Answer: Avoid priming, every time we start the pump
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