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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

Stoke’s equation is valid in the Reynolds number range__________________?
A 0.01 to 0.1
B 0.1 to 2
C 2 to 10
D 10 to 100
Correct Answer: 0.01 to 0.1
In laminar flow through a round tube, the discharge varies ______________________?
A Linearly as the viscosity
B Inversely as the pressure drop
C Inversely as the viscosity
D As the square of the radius
Correct Answer: Inversely as the viscosity
Fanning friction factor for laminar flow of fluid in a circular pipe is____________________?
A Not a function of the roughness of pipe wall
B Inversely proportional to Reynolds number
C Both A. & B.
D Neither A. nor B.
Correct Answer: Both A. & B.
A hydraulic accumulator comprises of__________________?
A A storage device and a control valve
B A cylinder and a plunger
C Two pistons and two cylinders
D A storage tank and a ram pump
Correct Answer: A cylinder and a plunger
A pump operating under specific conditions delivers insufficient quantity of liquid. This may be set right by________________?
A Decreasing the size of the inlet pipe
B Increasing the size of the inlet pipe
C Lowering the pump position
D Both B. and C.
Correct Answer: Both B. and C.
The ratio of pressure forces to inertial forces is called the _______________ number?
A Froude
B Euler
C Reynold
D Mach
Correct Answer: Euler
In case of turbulent flow of fluid through a circular pipe, the __________________?
A Mean flow velocity is about 0.5 times the maximum velocity
B Velocity profile becomes flatter and flatter with increasing Reynolds number
C Point of maximum instability exists at a distance of 2r/3 from the pipe wall (r = pipe radius)
D Skin friction drag, shear stresses, random orientation of fluid particles and slope of velocity
Correct Answer: Skin friction drag, shear stresses, random orientation of fluid particles and slope of velocity
The ratio of the depth of flow to the diameter of the channel for maximum discharge in a circular channel in open channel flow is________________?
A 0.1
B 0.55
C 0.95
D 1.85
Correct Answer: 0.95
Forces acting on a particle settling in fluid are _____________ forces?
A Gravitational & buoyant
B Centrifugal & drag
C Gravitational or centrifugal buoyant drag
D External, drag & viscous
Correct Answer: Gravitational or centrifugal buoyant drag
Fluid resistance to shear depends upon its_______________?
A Rate of transfer of molecular momentum
B Cohesion
C Both A. and B.
D Neither A. nor B.
Correct Answer: Both A. and B.
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