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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.

Value of Peclet number = 0, is the representative of ____________________?

A Laminar flow

B Complete back mixing

C Plug flow

D Eddy diffusivity = 0

Review Detailed Answer

Correct Answer: Complete back mixing

Steam economy is defined as the amount of evaporation per unit amount of steam used, while the capacity is the total evaporation obtained per hour. Use of multiple effects in evaporation ?

A Increases capacity

B Increases economy

C Does not affect the capacity

D Both B. & C.

Review Detailed Answer

Correct Answer: Both B. & C.

Value of Peclet number = ∞, is the representative of___________________?

A Laminar flow

B Complete back mixing

C Plug flow

D Eddy diffusivity = 0

Review Detailed Answer

Correct Answer: Plug flow

Baffles are provided in a shell and tube heat exchanger to increase the turbulence and velocity of the shell side fluid. Which of the following shaped baffles does not fall in the category of transverse baffle ?

A Segmental baffle

B Flat plate extending across the wall

C Disk type baffle

D Helical type baffle

Review Detailed Answer

Correct Answer: Flat plate extending across the wall

The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the _______________ stress?

A Working

B Damaging

C Allowable

D None of these

Review Detailed Answer

Correct Answer: Damaging

At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally ?

A Higher

B Lower

C Same

D Unpredictable

Review Detailed Answer

Correct Answer: Lower

(Le/D) for a Tee (used as elbow, entering run) would be around _______________________?

A 5

B 60

C 160

D 200

Review Detailed Answer

Correct Answer: 60

Bubble cap tray is the most commonly used tray in large distillation column, because______________?

A Of its flexibility and nearly constant efficiency under varying conditions of operation

B It incurs less pressure drop as compared to any other try designed for the same duty

C It eliminates the foaming and entrainment tendency during operation

D None of these

Review Detailed Answer

Correct Answer: Of its flexibility and nearly constant efficiency under varying conditions of operation

Removable connection of tubes to tube sheet is called___________________?

A Ferrule

B Socket

C Nipple

D Saddle

Review Detailed Answer

Correct Answer: Ferrule

In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by ______________ times the hole diameter?

A Two

B Five

C Ten

D Twenty

Review Detailed Answer

Correct Answer: Two

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Value of Peclet number = 0, is the representative of ____________________?

Steam economy is defined as the amount of evaporation per unit amount of steam used, while the capacity is the total evaporation obtained per hour. Use of multiple effects in evaporation ?

Value of Peclet number = ∞, is the representative of___________________?

Baffles are provided in a shell and tube heat exchanger to increase the turbulence and velocity of the shell side fluid. Which of the following shaped baffles does not fall in the category of transverse baffle ?

The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the _______________ stress?

At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally ?

(Le/D) for a Tee (used as elbow, entering run) would be around _______________________?

Bubble cap tray is the most commonly used tray in large distillation column, because______________?

Removable connection of tubes to tube sheet is called___________________?

In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by ______________ times the hole diameter?