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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

Pick out the wrong statement?
A A fluid mass is free from shearing forces, when it is made to rotate with a uniform velocity
B Newton’s law of viscosity is not applicable to the turbulent flow of fluid with linear velocity
C Laminar flow of viscous liquids is involved in the lubrication of various types of bearings
D Rise of water in capillary tubes reduces with the increasing diameter of capillary tubes
Correct Answer: Newton’s law of viscosity is not applicable to the turbulent flow of fluid with linear velocity
Pick out the wrong statement?
A The eddy viscosity is a function of the type of turbulence involved
B The eddy viscosity is a fluid property
C The viscosity of gas increases with increase in temperature
D The viscosity of a liquid increases with decrease in temperature
Correct Answer: The eddy viscosity is a fluid property
Pick out the correct statement pertaining to Venturimeter ?
A A Venturimeter with a fixed pressure drop discharges more, when the flow is vertically
B The co-efficient of contraction of a Venturimeter is always unity
C For a fixed pressure drop, the discharge of a gas through a Venturimeter is greater, when
D None of these
Correct Answer: None of these
Pick out the correct statement?
A Human blood is a Newtonian fluid
B A Newtonian fluid obeys Newton’s law of cooling
C For a non-Newtonian fluid, a straight line passes through the origin in a plot between shear
D Thin lubricating oil is an example of a non-Newtonian fluid
Correct Answer: A Newtonian fluid obeys Newton’s law of cooling
Pick out the wrong statement about a streamline ?
A It is always parallel to the main direction of the fluid flow
B It is a line across which there is no flow and it is equivalent to a rigid boundary
C Streamlines intersect at isolated point of zero velocity and infinite velocity
D The fluid lying between any two streamlines can be considered to be in isolation and the
Correct Answer: It is always parallel to the main direction of the fluid flow
Pick out the wrong statement?
A The form drag is dependent upon the occurrence of a wake
B The shear stress at any given cross-section of a pipe for steady flow (either laminar or turbulent) varies linearly as the radial distance
C An ideal fluid is the one, which has negligible surface tension and obeys the Newton’s law of viscosity
D Existence of the boundary layer in fluid flow is because of viscosity of the fluid.
Correct Answer: An ideal fluid is the one, which has negligible surface tension and obeys the Newton’s law of viscosity
Pick out the wrong statement?
A Greater is the kinematic viscosity of the liquid, greater is the thickness of the boundary layer
B Blowers develop a maximum pressure of 2 atmospheres
C Friction losses in pipe fittings are generally expressed in terms of velocity heads
D Fanning friction factor in case of turbulent flow of liquids in pipe depends upon relative
Correct Answer: Friction losses in pipe fittings are generally expressed in terms of velocity heads
Select the wrong statement pertaining to flow of an incompressible fluid through a Venturimeter ?
A For frictionless flow, the fluid pressure entering the venturi meter will be exactly equal to that
B Discharge of fluid through a Venturimeter depends upon the gage difference irrespective of
C Venturimeter occupies less space than an orificemeter
D Venturimeter incurs less power loss compared to an equivalent orificemeter
Correct Answer: Venturimeter occupies less space than an orificemeter
Select the correct statement?
A The discharge through a Venturimeter depends upon Δp only and is independent of
B A Venturimeter with a given gage difference discharges at a greater rate, when the flow is
C For a given pressure difference, the discharge of gas is greater through a Venturimeter, when
D The overall pressure loss is the same in a given pipe line, whether a Venturimeter or a nozzle
Correct Answer: The discharge through a Venturimeter depends upon Δp only and is independent of
Pick out the wrong statement ?
A Momentum transfer in laminar flow results from velocity gradient
B A fluid in equilibrium is not free from shear stress
C The viscosity of a non-Newtonian fluid is a function of temperature only
D Both B. and C.
Correct Answer: Both B. and C.
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