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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 heat exchanger, floating head is provided to____________________?

A Facilitate cleaning of the exchanger

B Increase the heat transfer area

C Relieve stresses caused by thermal expansion

D Increase log mean temperature gradient

Review Detailed Answer

Correct Answer: Relieve stresses caused by thermal expansion

Which of the following accessories is provided in the vapor line of an evaporator for removing the entrained liquid ?

A Bleed point

B Vent

C Catchall

D Baffle

Review Detailed Answer

Correct Answer: Catchall

The equivalent diameter for pressure drop is ________________ that for heat transfer?

A Smaller than

B Greater than

C Equal to

D Not related with

Review Detailed Answer

Correct Answer: Smaller than

As the difference between the wall temperature and bulk temperature increases, the boiling heat transfer co-efficient ?

A Continues to increase

B Continues to decrease

C Goes through a minimum

D Goes through a maximum

Review Detailed Answer

Correct Answer: Goes through a minimum

Fouling factor_____________________?

A Is a dimensionless quantity

B Does not provide a safety factor for design

C Accounts for additional resistances to heat flow

D None of these

Review Detailed Answer

Correct Answer: Accounts for additional resistances to heat flow

If the baffle spacing in a shell and tube heat exchanger increases, then the Reynolds number of the shell side fluid_________________?

A Remains unchanged

B Increases

C Increases or decreases depending on number of shell passes

D Decreases

Review Detailed Answer

Correct Answer: Decreases

The unit of heat transfer co-efficient in SI unit is____________________?

A J/M2°K

B W/m2°K

C W/m°K

D J/m°K

Review Detailed Answer

Correct Answer: W/m2°K

Which type of heat exchanger is preferred for heavy heat loads ?

A Double pipe

B Plate fine

C Series and parallel set of shell and tube

D None of these

Review Detailed Answer

Correct Answer: Series and parallel set of shell and tube

With increase in porosity, the thermal conductivity of a solid substance__________________?

A Increases

B Decreases

C Remains unchanged

D May increase or decrease; depends on the solid

Review Detailed Answer

Correct Answer: Decreases

Vacuum is generally maintained in the vapour space of an evaporator mainly to__________________?

A Get economical temperature difference by using moderate pressure steam

B Facilitate forward feeding in multiple effect evaporation

C Concentrate heat sensitive materials

D Achieve very high concentration of the final product

Review Detailed Answer

Correct Answer: Get economical temperature difference by using moderate pressure steam

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

In a heat exchanger, floating head is provided to____________________?

Which of the following accessories is provided in the vapor line of an evaporator for removing the entrained liquid ?

The equivalent diameter for pressure drop is ________________ that for heat transfer?

As the difference between the wall temperature and bulk temperature increases, the boiling heat transfer co-efficient ?

Fouling factor_____________________?

If the baffle spacing in a shell and tube heat exchanger increases, then the Reynolds number of the shell side fluid_________________?

The unit of heat transfer co-efficient in SI unit is____________________?

Which type of heat exchanger is preferred for heavy heat loads ?

With increase in porosity, the thermal conductivity of a solid substance__________________?

Vacuum is generally maintained in the vapour space of an evaporator mainly to__________________?