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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.

Dimension of surface tension is (where, F = force, L = length) ?

A FL-1

B F-1. L

C F.L-2

D F-2. L

Review Detailed Answer

Correct Answer: FL-1

Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will_______________?

A Increase

B Decrease

C Remain same

D Be quadrupled

Review Detailed Answer

Correct Answer: Increase

Volute type of casing is provided in a centrifugal pump to___________________?

A Convert velocity head to pressure head

B Convert pressure head to velocity head

C Reduce the discharge fluctuation

D Increase the discharge

Review Detailed Answer

Correct Answer: Increase the discharge

Air vessel provided in a reciprocating pump__________________?

A Smoothens the flow by avoiding pulsations

B Increases the volumetric efficiency of the pump

C Saves the pump from the danger of cavitation

D None of these

Review Detailed Answer

Correct Answer: None of these

The pipe wall thickness is minimum for a pipe of given nominal size having schedule number___________________?

A 160

B 120

C 80

D 40

Review Detailed Answer

Correct Answer: 40

The ratio of width to depth for the most economical rectangular section in open channel flow is_________________?

A 0.5

B 1

C 1.5

D 2

Review Detailed Answer

Correct Answer: 2

Choking in case of pipe flow means that a___________________?

A Specified mass flow rate cannot be achieved

B Valve is closed in the line

C Restriction in flow cross-section area occurs

D None of these

Review Detailed Answer

Correct Answer: Specified mass flow rate cannot be achieved

If Blasius or Darcy friction factor is ‘f1’ then the Fanning friction factor is equal to____________________?

A f1/4

B 4f2

C 2f1

D f1/2

Review Detailed Answer

Correct Answer: f1/4

Consider a centrifugal pump having a specific impeller diameter, fixed impeller speed pumping a liquid of constant density at a particular discharge capacity. With decrease in the capacity of the pump, the _______________ decreases?

A NPSH required

B BHP required by the pump

C Head of the liquid pumped

D All A., B. and C.

Review Detailed Answer

Correct Answer: All A., B. and C.

When the pipe Reynold’s number is 6000, the flow is generally___________________?

A Viscous

B Laminar

C Turbulent

D Transition

Review Detailed Answer

Correct Answer: Turbulent

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Dimension of surface tension is (where, F = force, L = length) ?

Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will_______________?

Volute type of casing is provided in a centrifugal pump to___________________?

Air vessel provided in a reciprocating pump__________________?

The pipe wall thickness is minimum for a pipe of given nominal size having schedule number___________________?

The ratio of width to depth for the most economical rectangular section in open channel flow is_________________?

Choking in case of pipe flow means that a___________________?

If Blasius or Darcy friction factor is ‘f1’ then the Fanning friction factor is equal to____________________?

Consider a centrifugal pump having a specific impeller diameter, fixed impeller speed pumping a liquid of constant density at a particular discharge capacity. With decrease in the capacity of the pump, the _______________ decreases?

When the pipe Reynold’s number is 6000, the flow is generally___________________?