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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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.

Where does the maximum stress occur in case of laminar flow of incompressible fluid in a closed conduit of diameter ‘d’ ?

A At the centre

B At d/4 from the wall

C At the wall

D At d/8 from the wall

Review Detailed Answer

Correct Answer: At the wall

Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the _________________?

A Temperature

B Pressure

C Both A. & B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Both A. & B.

The equivalent diameter for flow through a rectangular duct of width B and height H is___________________?

A HB/2 (H + B)

B HB/(H + B)

C 2HB/(H + B)

D 4HB/(H + B)

Review Detailed Answer

Correct Answer: HB/(H + B)

A Rotameter works on the principle of _______________ pressure drop?

A Constant

B Variable

C Both A. & B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Constant

The energy equation, E + (p/ρ) + (V2/2g) + gZ = constant (E = internal energy/mass), is applicable to___________________?

A Perfect gases only

B Isothermal flow of gases

C Adiabatic unsteady flow of gases

D All compressible fluids

Review Detailed Answer

Correct Answer: All compressible fluids

The hydrodynamic and thermal boundary layers will merge, when ____________________?

A Prandtl number is one

B Schmidt number tends to infinity

C Nusselt number tends to infinity

D Archimedes number is greater than 10000

Review Detailed Answer

Correct Answer: Prandtl number is one

The velocity profile exhibited by laminar flow of Newtonian fluids is such that the velocity distribution w.r.t. radius of the circular pipe is a/an ______________ with the apex at the centre line of the pipe?

A Hyperbola

B Parabola

C Semi-circle

D Semi-ellipse

Review Detailed Answer

Correct Answer: Parabola

A centrifugal pump is called a turbine pump, if it is having a_________________?

A Turbine type impeller

B Vaned diffusion casing

C Rotating vaned volute

D None of these

Review Detailed Answer

Correct Answer: Vaned diffusion casing

In centrifugal pump operation, the cavitation can be eliminated by maintaining suction pressure ______________ the vapor pressure of the liquid at the suction temperature?

A Lower than

B Higher than

C Equal to

D None of these

Review Detailed Answer

Correct Answer: Higher than

A mercury (specific gravity = 13.6) manometer connected across an orificemeter fitted in a pipe shows a manometer reading of 2 cms. If the manometer liquid is changed to carbon tetrachloride (specific gravity = 1.6), then for the same flow rate of water the new manometer reading will be _______________ cms?

A 17

B 42

C 84

D 1.8

Review Detailed Answer

Correct Answer: 17

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Where does the maximum stress occur in case of laminar flow of incompressible fluid in a closed conduit of diameter ‘d’ ?

Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the _________________?

The equivalent diameter for flow through a rectangular duct of width B and height H is___________________?

A Rotameter works on the principle of _______________ pressure drop?

The energy equation, E + (p/ρ) + (V2/2g) + gZ = constant (E = internal energy/mass), is applicable to___________________?

The hydrodynamic and thermal boundary layers will merge, when ____________________?

The velocity profile exhibited by laminar flow of Newtonian fluids is such that the velocity distribution w.r.t. radius of the circular pipe is a/an ______________ with the apex at the centre line of the pipe?

A centrifugal pump is called a turbine pump, if it is having a_________________?

In centrifugal pump operation, the cavitation can be eliminated by maintaining suction pressure ______________ the vapor pressure of the liquid at the suction temperature?