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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.

Check valve provided in the discharge line of a centrifugal pump serves the purpose of controlling the_______________?

A Back flow of fluid in the event of stoppage of pump

B Discharge pressure

C Flow of liquid during operation of the pump

D All A., B. and C.

Review Detailed Answer

Correct Answer: Back flow of fluid in the event of stoppage of pump

Head developed by a centrifugal pump depends on its___________________?

A Speed

B Impeller diameter

C Both A. and B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Both A. and B.

Pump used for the transportation of molten sodium in a fast breader reactor is a/an __________ pump?

A Reciprocating

B Plunger

C Electromagnetic

D Gear

Review Detailed Answer

Correct Answer: Electromagnetic

Which is the correct relationship for a centrifugal pump? (Where, D = Impeller diameter, inches H = Head developed, ft of liquid pumped N = Speed of pump, rpm) ?

A D = 1840 H0.5/N

B D = 1840 N/H0.5

C H = 1840 D0.5/N

D D = 1840 H/N

Review Detailed Answer

Correct Answer: D = 1840 H0.5/N

The terminal velocity of a particle moving through a fluid varies as dp n. The value of n is equal to _______________ in Stoke’s law regime?

A 1

B 0.5

C 2

D 1.5

Review Detailed Answer

Correct Answer: 2

Maximum theoretical suction lift for water at 15°C by a centrifugal pump is 34 ft. The same for water at 90°C will be _____________________ ft?

A 40

B 34

C 8

D 37

Review Detailed Answer

Correct Answer: 8

For the same terminal conditions and valve size, the pressure drop in a fully opened globe valve as compared to that in a gate valve is___________________?

A More

B Less

C Equal

D Either A. or B.; depends on the viscosity of the fluid

Review Detailed Answer

Correct Answer: More

A piezometer opening measures the _____________ fluid pressure?

A Static

B Undisturbed

C Total

D Dynamic

Review Detailed Answer

Correct Answer: Undisturbed

The drag co-efficient for a bacterium moving in water at 1 mm/s, will be of the following order of magnitude (assume size of the bacterium to be 1 micron and kinematic viscosity of water to be 10-6m2/s) ?

A 24000

B 24

C 0.24

D 0.44

Review Detailed Answer

Correct Answer: 0.44

A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke’s law. A particle B with diameter 20 microns settling in the same oil will have a settling velocity ?

A Same as that of A

B One fourth as that of A

C Twice as that of A

D Four times as that of A

Review Detailed Answer

Correct Answer: One fourth as that of A

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Check valve provided in the discharge line of a centrifugal pump serves the purpose of controlling the_______________?

Head developed by a centrifugal pump depends on its___________________?

Pump used for the transportation of molten sodium in a fast breader reactor is a/an __________ pump?

Which is the correct relationship for a centrifugal pump? (Where, D = Impeller diameter, inches H = Head developed, ft of liquid pumped N = Speed of pump, rpm) ?

The terminal velocity of a particle moving through a fluid varies as dp n. The value of n is equal to _______________ in Stoke’s law regime?

Maximum theoretical suction lift for water at 15°C by a centrifugal pump is 34 ft. The same for water at 90°C will be _____________________ ft?

For the same terminal conditions and valve size, the pressure drop in a fully opened globe valve as compared to that in a gate valve is___________________?

A piezometer opening measures the _____________ fluid pressure?

The drag co-efficient for a bacterium moving in water at 1 mm/s, will be of the following order of magnitude (assume size of the bacterium to be 1 micron and kinematic viscosity of water to be 10-6m2/s) ?

A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke’s law. A particle B with diameter 20 microns settling in the same oil will have a settling velocity ?