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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.

In a shell and tube heat exchanger, the tube side heat transfer co-efficient just at the entrance of the tube is_________________?

A Infinity

B Zero

C Same as average heat transfer co-efficient for tube side

D None of these

Review Detailed Answer

Correct Answer: Infinity

Which of the following is the most controlling factor for the rate of bubble detachment from the hot solid surface ?

A Liquid density

B Liquid viscosity

C Hot surface temperature

D Interfacial tension

Review Detailed Answer

Correct Answer: Interfacial tension

Radiation heat transfer rates does not depend upon the_________________?

A Type of absorbing surface

B Distance between the heat source and the object receiving the heat

C Surface area and temperature of the heat source

D None of these

Review Detailed Answer

Correct Answer: None of these

If all the conditions and dimensions are same, then the ratio of velocity through the tubes of a double pass heat exchanger to that through the single pass heat exchanger is_________________?

A 1

B 2

C 1/2

D 4

Review Detailed Answer

Correct Answer: 2

Which of the following is not concerned with the heat transfer ?

A Brinkman number

B Stanton number

C Schmidt number

D Peclet number

Review Detailed Answer

Correct Answer: Schmidt number

_____________ equation relates the thermal conductivity of a solid to its temperature ?

A Antoine

B Kopp’s

C Lee’s

D Kistyakowsky

Review Detailed Answer

Correct Answer: Lee’s

Unsteady state heat conduction occurs, when_______________?

A Temperature distribution is independent of time

B Temperature distribution is dependent on time

C Heat flows in one direction only

D Three dimensional heat flow is concerned

Review Detailed Answer

Correct Answer: Temperature distribution is dependent on time

For specified tube outside diameter, higher BWG means higher___________________?

A Tube thickness

B Cross-sectional area

C Weight per unit length

D None of these

Review Detailed Answer

Correct Answer: Cross-sectional area

A long iron rod initially at a temperature of 20°C has one end dipped in boiling water (100°C) at time, t = 0. The curved surface of the rod is insulated so that heat conduction is one dimensional in the axial direction. The temperature at a distance 100 mm from the dipped end becomes 40°C at time, t = 200 s. The same temperature is achieved at a distance of 200 mm from the dipped end at time ___________________?

A t = 283 s

B t = 356 s

C t = 400 s

D t = 800 s

Review Detailed Answer

Correct Answer: t = 800 s

Value of Prandtl number for water ranges from_________________?

A 1 to 2

B 5 to 10

C 100 to 500

D 1000 to 2000

Review Detailed Answer

Correct Answer: 5 to 10

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

In a shell and tube heat exchanger, the tube side heat transfer co-efficient just at the entrance of the tube is_________________?

Which of the following is the most controlling factor for the rate of bubble detachment from the hot solid surface ?

Radiation heat transfer rates does not depend upon the_________________?

If all the conditions and dimensions are same, then the ratio of velocity through the tubes of a double pass heat exchanger to that through the single pass heat exchanger is_________________?

Which of the following is not concerned with the heat transfer ?

_____________ equation relates the thermal conductivity of a solid to its temperature ?

Unsteady state heat conduction occurs, when_______________?

For specified tube outside diameter, higher BWG means higher___________________?

Value of Prandtl number for water ranges from_________________?