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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.

Thermal diffusivity is the most important in heat transfer by__________________?

A Conduction

B Radiation

C Condensation

D Natural convection

Review Detailed Answer

Correct Answer: Conduction

LMTD correction factor which is to be applied for a cross-flow heat exchanger increases with increase in the number of shell passes. Its value for a single pass cross flow heat exchanger is __________________?

A 0

B 1

C > 1

D < 1

Review Detailed Answer

Correct Answer: 1

The statement that “maximum wavelength of radiation is inversely proportional to the temperature” is ______________ law?

A Stefan-Boltzmann’s

B Planck’s

C Wien’s displacement

D None of these

Review Detailed Answer

Correct Answer: Wien’s displacement

Among liquids, water has a comparatively high value of thermal conductivity, due to its__________________?

A Low density

B High viscosity

C Partial ionisation

D Dense structure

Review Detailed Answer

Correct Answer: Partial ionisation

In which mode of heat transfer, the Biot number is important ?

A Transient heat conduction

B Natural convection

C Forced convection

D Radiation

Review Detailed Answer

Correct Answer: Transient heat conduction

A diathermanous substance _______________ the thermal radiation completely?

A Absorbs

B Reflects

C Transmits

D None of these

Review Detailed Answer

Correct Answer: Transmits

Boiling point elevation of a solution of NaOH _____________________?

A Increases rapidly with temperature rise

B Is almost independent of temperature

C Is almost independent of pressure

D Both B. and C

Review Detailed Answer

Correct Answer: Both B. and C

Radiant energy received by a body is proportional to (where, d = the distance between the object emitting radiation and that receiving it.) ?

A √d

B d

C d2

D d1.5

Review Detailed Answer

Correct Answer: d

Overall thermal resistance for conductive heat transfer through a series of flat resistances is equal to the____________________?

A Maximum resistance in the series

B Sum of all resistances

C Average of all resistances

D Minimum resistance presents in the series

Review Detailed Answer

Correct Answer: Sum of all resistances

Prandtl and Reynolds analogy are same, when Prandtl number is____________________?

A 0.5

B 1

C > 2

D 1.5

Review Detailed Answer

Correct Answer: 1

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Thermal diffusivity is the most important in heat transfer by__________________?

LMTD correction factor which is to be applied for a cross-flow heat exchanger increases with increase in the number of shell passes. Its value for a single pass cross flow heat exchanger is __________________?

The statement that “maximum wavelength of radiation is inversely proportional to the temperature” is ______________ law?

Among liquids, water has a comparatively high value of thermal conductivity, due to its__________________?

In which mode of heat transfer, the Biot number is important ?

A diathermanous substance _______________ the thermal radiation completely?

Boiling point elevation of a solution of NaOH _____________________?

Radiant energy received by a body is proportional to (where, d = the distance between the object emitting radiation and that receiving it.) ?

Overall thermal resistance for conductive heat transfer through a series of flat resistances is equal to the____________________?

Prandtl and Reynolds analogy are same, when Prandtl number is____________________?