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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 fluid (μ/ρ) = 0.01 cm2/sec is moving at critical flow condition (NRe = 2100) through a pipe of dia 3 cms. Velocity of flow is _______________ cm/sec?
A 7
B 700
C 7000
D 630
Correct Answer: 7
Reciprocating pumps compared to centrifugal pumps__________________?
A Deliver liquid at uniform pressure
B Can handle slurries more efficiently
C Are not subject to air binding
D Can be operated with delivery valve closed
Correct Answer: Are not subject to air binding
Major loss in sudden contraction in pipe flow is due to ________________?
A Boundary friction
B Flow contraction
C Expansion of flow after sudden contraction
D None of these
Correct Answer: Flow contraction
What is the value of co-efficient of discharge for square edged circular orifice (for β = 0.3 to 0.5) ?
A 0.61 – 0.63
B 0.5 – 0.75
C 0.75 – 0.90
D 0.35 – 0.55
Correct Answer: 0.61 – 0.63
Bernoulli’s equation describes the _______________?
A Mechanical energy balance in potential flow
B Kinetic energy balance in laminar flow
C Mechanical energy balance in turbulent flow
D Mechanical energy balance in boundary layer
Correct Answer: Mechanical energy balance in potential flow
In case of laminar flow of fluid through a circular pipe, the__________________?
A Shear stress over the cross-section is proportional to the distance from the surface of the pipe
B Surface of velocity distribution is a paraboloid of revolution, whose volume equals half the
C Velocity profile varies hyperbolically and the shear stress remains constant over the crosssection
D Average flow occurs at a radial distance of 0.5 r from the centre of the pipe (r = pipe radius)
Correct Answer: Surface of velocity distribution is a paraboloid of revolution, whose volume equals half the
Baffles in mixing tanks are provided to__________________?
A Reduce swirling and vortex formation
B Increase the structural strength of the tank
C Aid in rotational flow
D None of these
Correct Answer: Reduce swirling and vortex formation
Flow measurement in an open channel is done by a/an ________________?
A Venturimeter
B Orificemeter
C Weir
D Rotameter
Correct Answer: Weir
____________ is used for measuring the static pressure exerted on the wall by a fluid flowing parallel to the wall in a pipeline?
A Venturimeter
B Pressure gauge
C Pitot tube
D Orificemeter
Correct Answer: Pitot tube
Cp/Cv is termed as__________________?
A Adiabatic constant
B Mach number
C Weber number
D Prandtl number
Correct Answer: Adiabatic constant
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