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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.

Which has the lowest Prandtl number ?

A Liquid metal

B Aqueous solution

C Water

D Lube oil

Review Detailed Answer

Correct Answer: Liquid metal

In case of heat flow by conduction for a cylindrical body with an internal heat source, the nature of temperature distribution is_________________?

A Linear

B Hyperbolic

C Parabolic

D None of these

Review Detailed Answer

Correct Answer: Parabolic

Heat flux increases with temperature drop beyond the Leiden frost point in the plot of heat flux vs. temperature drop for a boiling liquid, because___________________?

A Convection becomes important

B Conduction becomes important

C Radiation becomes important

D Sub-cooled boiling occurs

Review Detailed Answer

Correct Answer: Radiation becomes important

‘Duhring’s plot’ is of use in_________________?

A Extractive distillation

B Evaporation

C Leaching

D Absorption

Review Detailed Answer

Correct Answer: Evaporation

View factor is important in heat transfer by_____________________?

A Steady state conduction

B Natural convection

C Forced convection

D Radiation

Review Detailed Answer

Correct Answer: Radiation

Forced circulation evaporators are normally used for concentrating liquids having ___________________?

A Scaling characteristics

B High viscosity

C Both A. & B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Both A. & B.

The equation, Nst = f/2, is the _____________ analogy?

A Colburn

B Reynolds

C Prandtl

D None of these

Review Detailed Answer

Correct Answer: Reynolds

Which of the following is directly concerned with the heat transfer ?

A Strouhal number

B Sherwood number

C Euler number

D Grashoff number

Review Detailed Answer

Correct Answer: Grashoff number

The thermal boundary layer at NPr > 1 ?

A Is thicker than hydrodynamic boundary layer

B Is thinner than hydrodynamic boundary layer

C And the hydrodynamic boundary layers are identical

D Disappears

Review Detailed Answer

Correct Answer: Is thinner than hydrodynamic boundary layer

Nucleate boiling is promoted ___________________?

A On polished surfaces

B On rough surfaces

C In the absence of agitation

D None of these

Review Detailed Answer

Correct Answer: On rough surfaces

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Which has the lowest Prandtl number ?

In case of heat flow by conduction for a cylindrical body with an internal heat source, the nature of temperature distribution is_________________?

Heat flux increases with temperature drop beyond the Leiden frost point in the plot of heat flux vs. temperature drop for a boiling liquid, because___________________?

‘Duhring’s plot’ is of use in_________________?

View factor is important in heat transfer by_____________________?

Forced circulation evaporators are normally used for concentrating liquids having ___________________?

The equation, Nst = f/2, is the _____________ analogy?

Which of the following is directly concerned with the heat transfer ?

The thermal boundary layer at NPr > 1 ?

Nucleate boiling is promoted ___________________?