M C Q s D r i v e

Chemical Engineering Mcqs 9594 MCQs [All-Courses]

thumb

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.

_____________________ tray arrangement is recommended for distillation column having diameter upto 4 ft ?
A Radial flow
B Cross flow
C Split flow
D Cascade
Correct Answer: Cross flow
In case of a shell and tube heat exchanger, the minimum shell thickness for carbon steel (inclusive of corrosion allowance) depends on shell diameter and is in the range of ________________ mm?
A 3-5
B 5-11
C 8-15
D 12-18
Correct Answer: 5-11
The ratio of shear stress to shear strain is called ____________________?
A Bulk modulus
B Shear modulus
C Modulus of rigidity
D Modulus of elasticity
Correct Answer: Shear modulus
A stuffing box is used for____________________?
A Absorbing the contraction/expansion of pipeline due to temperature changes
B Prevention of fluid leakage around moving parts
C Facilitating smooth opening and closing of a valve
D Reducing the resistance of fluid flow
Correct Answer: Prevention of fluid leakage around moving parts
The ends of a cylindrical vessel can be closed by a head, which can be one of the four shapes. For the same thickness, choose the one which can withstand the highest pressure ?
A Flat plate
B Hemispherical
C Torispherical
D Ellipsoidal
Correct Answer: Ellipsoidal
Smaller sized packings are generally dumped to the packed columns, and the large ones of size greater than ______________ mm are stacked individually, which provides better control over bed porosity and offers lower gas pressure drop?
A 25
B 50
C 75
D 150
Correct Answer: 75
Triangular pitch tube layout as compared to square pitch in a shell and tube heat exchanger________________?
A Permits the use of less tubes in a given shell diameter
B Facilitates comparatively easier external cleaning because of large clearance
C Permits the use of more tubes in a given shell diameter
D Both B. and C.
Correct Answer: Permits the use of more tubes in a given shell diameter
To keep the power input constant for a stirred vessel operating under fully developed turbulent flow conditions (constant power number), if the impeller diameter is increased by 20%, the impeller speed should be decreased by a factor of_________________?
A (1.2)3/2
B (1.2)3/5
C (1.2)2/3
D (1.2)5/3
Correct Answer: (1.2)5/3
Friction factor for turbulent flow in a new pipe is given by____________________?
A f = 16/NRe
B f = 0.04/(NRe)0.16
C f = 0.22 NRe
D f = 25/NRe
Correct Answer: f = 0.04/(NRe)0.16
Equivalent diameter for heat transfer calculation for a duct of square cross-section having each side as ‘d’ will be__________________?
A d
B √d
C √(2πd)
D √(2d)
Correct Answer: d