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.

_____________________ tray arrangement is recommended for distillation column having diameter upto 4 ft ?

A Radial flow

B Cross flow

C Split flow

D Cascade

Review Detailed Answer

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

Review Detailed Answer

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

Review Detailed Answer

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

Review Detailed Answer

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

Review Detailed Answer

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

Review Detailed Answer

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.

Review Detailed Answer

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

Review Detailed Answer

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

Review Detailed Answer

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)

Review Detailed Answer

Correct Answer: d

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

_____________________ tray arrangement is recommended for distillation column having diameter upto 4 ft ?

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?

The ratio of shear stress to shear strain is called ____________________?

A stuffing box is used for____________________?

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 ?

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?

Triangular pitch tube layout as compared to square pitch in a shell and tube heat exchanger________________?

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_________________?

Friction factor for turbulent flow in a new pipe is given by____________________?

Equivalent diameter for heat transfer calculation for a duct of square cross-section having each side as ‘d’ will be__________________?