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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.

The hydraulic diameter of an annulus of inner and outer radii Ri and Ro respectively is___________________?

A 4(Ro-Ri)

B √(Ro-Ri)

C 2(Ro-Ri)

D Ro + Ri

Review Detailed Answer

Correct Answer: 2(Ro-Ri)

A pipe has a porous section of length L as shown in the figure. Velocity at the start of this section of V0. If fluid leaks into the pipe through the porous section at a volumetric rate per unit area q(x/L)2, what will be axial velocity in the pipe at any „x‟? Assume incompressible one dimensional flow i.e., no gradients in the radial direction ?

A VX = V0 + q (x3/L2D)

B VX = V0 + ⅓q (x3/L2)

C VX = V0 + 2q (x2/LD)

D VX = V0 + (4/3) q (x3/L2D)

Review Detailed Answer

Correct Answer: VX = V0 + (4/3) q (x3/L2D)

Navier-Stokes equation is useful in the analysis of _____________ fluid flow problems?

A Non-viscous

B Viscous

C Turbulent

D Rotational

Review Detailed Answer

Correct Answer: Viscous

The head loss in turbulent flow in a pipe varies_________________?

A Directly as the velocity

B Inversely as the square of the velocity

C Approximately as the square of the velocity

D Inversely as the square of the diameter

Review Detailed Answer

Correct Answer: Approximately as the square of the velocity

Pressure difference between two points in vessels, pipelines or in two different pipelines can be measured by a differential manometer. The pressure difference measured as the mm of water column in case of mercury-water, differential manometer is equal to (where, H = difference in height of mercury column in mm)?

A H

B 12.6 H

C 13.6 H

D 14.6 H

Review Detailed Answer

Correct Answer: H

Which of the following produces maximum pressure difference for transportation of gases ?

A Vacuum pumps

B Blowers

C Fans

D Compressors

Review Detailed Answer

Correct Answer: Compressors

Bernoulli’s equation is dependent on the__________________?

A First law of thermodynamics

B Third law of thermodynamics

C Law of conservation of momentum

D None of these

Review Detailed Answer

Correct Answer: None of these

For the production of very high vacuum, a _____________ pump is normally used?

A Diffusion

B Centrifugal

C Jet ejector

D Piston

Review Detailed Answer

Correct Answer: Diffusion

Foot valve provided in the pump is a ______________ valve?

A Direction control

B Back pressure

C Relief

D Pressure reduction

Review Detailed Answer

Correct Answer: Back pressure

For water, when the pressure increases, the viscosity_________________?

A Also increases

B Decreases

C Remain constant

D First decreases, and then increases

Review Detailed Answer

Correct Answer: First decreases, and then increases

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

The hydraulic diameter of an annulus of inner and outer radii Ri and Ro respectively is___________________?

Navier-Stokes equation is useful in the analysis of _____________ fluid flow problems?

The head loss in turbulent flow in a pipe varies_________________?

Which of the following produces maximum pressure difference for transportation of gases ?

Bernoulli’s equation is dependent on the__________________?

For the production of very high vacuum, a _____________ pump is normally used?

Foot valve provided in the pump is a ______________ valve?

For water, when the pressure increases, the viscosity_________________?