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.

A hot body will radiate heat most rapidly, if its surface is___________________?

A White & rough

B Black & rough

C White & polished

D Black & polished

Review Detailed Answer

Correct Answer: Black & rough

Prandtl number is the ratio of________________?

A Mass diffusivity to thermal diffusivity

B Momentum diffusivity to thermal diffusivity

C Thermal diffusivity to mass diffusivity

D Thermal diffusivity to momentum diffusivity

Review Detailed Answer

Correct Answer: Momentum diffusivity to thermal diffusivity

Rate of heat transfer by vaporisation from pools of water is affected by the ____________________?

A Nature of heating surface and distribution of bubbles

B Surface tension of water

C Viscosity of water

D All A., B. and C.

Review Detailed Answer

Correct Answer: All A., B. and C.

The purpose of providing bleed points in the evaporator is to__________________?

A Admit the feed

B Remove the product

C Facilitate removal of non-condensable gases

D Create vacuum

Review Detailed Answer

Correct Answer: Facilitate removal of non-condensable gases

With increase in temperature, the thermal conductivity of steel___________________?

A Increases

B Decreases

C Remains unchanged

D Increases exponentially

Review Detailed Answer

Correct Answer: Decreases

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

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

A hot body will radiate heat most rapidly, if its surface is___________________?

Prandtl number is the ratio of________________?

Rate of heat transfer by vaporisation from pools of water is affected by the ____________________?

The purpose of providing bleed points in the evaporator is to__________________?

With increase in temperature, the thermal conductivity of steel___________________?

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 ?