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.

Volute of a centrifugal pump should be designed in a fashion, such that the________________?

A Kinetic head gets converted into static head

B Moving stream gradually reduces velocity

C Mean velocity remains constant

D None of these

Review Detailed Answer

Correct Answer: Kinetic head gets converted into static head

In a stabilised soap bubble, pressure inside it compared to external pressure is________________?

A More

B Less

C Same

D Unpredictable

Review Detailed Answer

Correct Answer: More

The contraction co-efficient for Borda’s mouthpiece (for frictionless fluid) is__________________?

A 0.1

B 0.5

C 0.94

D 1

Review Detailed Answer

Correct Answer: 0.5

The value of critical Reynolds number for pipe flow is_________________?

A 1,300

B 10,000

C 100,000

D None of these

Review Detailed Answer

Correct Answer: 1,300

The range of a particular Rotameter can be increased by__________________?

A Use of floats of different densities

B No means

C Increasing the diameter of the float

D Decreasing the diameter of the float

Review Detailed Answer

Correct Answer: Use of floats of different densities

Propellers are____________________?

A Axial flow mixers

B Low speed impeller

C Used for mixing liquids of high viscosity

D Radial flow mixers

Review Detailed Answer

Correct Answer: Axial flow mixers

Cavitation occurs in a centrifugal pump when the suction pressure is________________?

A Less than the vapour pressure of the liquid at that temperature

B Greater than the vapour pressure of the liquid at that temperature

C Equal to the vapour pressure

D Equal to the developed head

Review Detailed Answer

Correct Answer: Less than the vapour pressure of the liquid at that temperature

Erosion and pits formation on the impeller of a centrifugal pump may be due to________________?

A Cavitation

B Low speed of impeller

C Its operation with delivery valve closed for considerable time after starting the pump

D Off centering of pump with motor

Review Detailed Answer

Correct Answer: Cavitation

What is the ratio of total kinetic energy of fluid passing per second to the value obtained on the basis of average velocity (for laminar flow through a circular pipe) ?

A 0.5

B 1

C 1.5

D 2

Review Detailed Answer

Correct Answer: 2

The curve of metacentre for a floating body ____________ the curve of buoyancy?

A Is always below

B Is the evolute of

C Intersects at right angle

D Is tangential to

Review Detailed Answer

Correct Answer: Is the evolute of

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Volute of a centrifugal pump should be designed in a fashion, such that the________________?

In a stabilised soap bubble, pressure inside it compared to external pressure is________________?

The contraction co-efficient for Borda’s mouthpiece (for frictionless fluid) is__________________?

The value of critical Reynolds number for pipe flow is_________________?

The range of a particular Rotameter can be increased by__________________?

Propellers are____________________?

Cavitation occurs in a centrifugal pump when the suction pressure is________________?

Erosion and pits formation on the impeller of a centrifugal pump may be due to________________?

What is the ratio of total kinetic energy of fluid passing per second to the value obtained on the basis of average velocity (for laminar flow through a circular pipe) ?

The curve of metacentre for a floating body ____________ the curve of buoyancy?