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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.

Floating head heat exchangers are used for the____________________?

A Heat transfer between corrosive fluids

B Cases where temperature difference between the shell and the tubes is more (>50°C)

C Co-current heat transfer systems

D Counter-current heat transfer systems

Review Detailed Answer

Correct Answer: Cases where temperature difference between the shell and the tubes is more (>50°C)

Welded joint efficiency in the design of chemical process equipment is taken as_________________?

A 0.55

B 0.75

C 0.85

D 0.95

Review Detailed Answer

Correct Answer: 0.85

In common bubble cap distillation column design practice, riser area is approximately equal to (where, Aa = Annular passage area, and Sa = Slot area) ?

A Aa = Sa

B 1.2 Aa = 1.2 Sa

C Sa = 1.5 Aa

D Aa = 1.5 Sa

Review Detailed Answer

Correct Answer: Aa = Sa

Needle valves are generally not used for___________________?

A Very large diameter pipes

B High pressure throttling service

C Very accurate flow control

D Smaller sizes of pipe

Review Detailed Answer

Correct Answer: Very large diameter pipes

Larger depth of liquid on the trays of a distillation column_________________?

A Leads to high tray efficiency

B Results in higher pressure drop per tray

C Both A. & B.

D Neither A. or B.

Review Detailed Answer

Correct Answer: Both A. & B.

In a cylindrical vessel subjected to internal pressure, the longitudinal stress ζL and the circumferential stress, ζn are related by___________________?

A ζh = 2 ζL

B ζh = ζL

C ζh = ζL/2

D No relation exists

Review Detailed Answer

Correct Answer: ζh = 2 ζL

Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter) ?

A 0.2 D

B 0.5 D

C 0.66 D

D 0.80 D

Review Detailed Answer

Correct Answer: 0.2 D

The distance between the top of the slots and the liquid surface when the static liquid is just ready to flow over the overflow weir is called____________________?

A Downcomer liquid seal

B Static submergence

C Skirt clearance

D None of these

Review Detailed Answer

Correct Answer: Static submergence

With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, FT_________________?

A Decreases very rapidly

B Increases very rapidly

C Remains constant

D Increases linearly

Review Detailed Answer

Correct Answer: Decreases very rapidly

Multiple blade paddle agitator is used for mixing high viscosity liquids/paste in which the paddle diameter is commonly 0.8 times the tank diameter. However, the width of the blade is in the range of ______________ times the paddle diameter?

A 0.1 to 0.25

B 0.3 to 0.5

C 0.5 to 0.6

D 0.65 to 0.80

Review Detailed Answer

Correct Answer: 0.1 to 0.25

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Floating head heat exchangers are used for the____________________?

Welded joint efficiency in the design of chemical process equipment is taken as_________________?

In common bubble cap distillation column design practice, riser area is approximately equal to (where, Aa = Annular passage area, and Sa = Slot area) ?

Needle valves are generally not used for___________________?

Larger depth of liquid on the trays of a distillation column_________________?

In a cylindrical vessel subjected to internal pressure, the longitudinal stress ζL and the circumferential stress, ζn are related by___________________?

Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter) ?

The distance between the top of the slots and the liquid surface when the static liquid is just ready to flow over the overflow weir is called____________________?

With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, FT_________________?

Multiple blade paddle agitator is used for mixing high viscosity liquids/paste in which the paddle diameter is commonly 0.8 times the tank diameter. However, the width of the blade is in the range of ______________ times the paddle diameter?