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.

Film boiling is usually not desired in commercial equipments, because____________________?

A The heat transfer rate is low in view of the large temperature drop

B It is difficult to maintain

C It is not economic

D None of these

Review Detailed Answer

Correct Answer: The heat transfer rate is low in view of the large temperature drop

The advantage of backward feed multiple effect evaporators over forward feed units is that___________________?

A Heat sensitive material can be handled

B There is no additional cost of pumping

C Most concentrated liquid is at highest temperature

D Equal heat transfer co-efficients exist in various effects

Review Detailed Answer

Correct Answer: Most concentrated liquid is at highest temperature

In case of a multipass shell and tube heat exchanger, providing a baffle on the shell side ______________ the heat transfer rate?

A Increases

B Decreases

C Does not affect

D May increase or decrease, depends on the type of baffle

Review Detailed Answer

Correct Answer: Increases

With the increase of temperature, the Col-burn jH factor_____________________?

A Increases

B Decreases

C Remains unchanged

D May increase or decrease; depending on temperature

Review Detailed Answer

Correct Answer: Increases

Electromagnetic radiations propagate in vacuum with a velocity of _______________ metre/second?

A 3 × 105

B 3 × 108

C 3 × 1010

D 3 × 1012

Review Detailed Answer

Correct Answer: 3 × 108

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

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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All Topics 9594

Film boiling is usually not desired in commercial equipments, because____________________?

The advantage of backward feed multiple effect evaporators over forward feed units is that___________________?

In case of a multipass shell and tube heat exchanger, providing a baffle on the shell side ______________ the heat transfer rate?

With the increase of temperature, the Col-burn jH factor_____________________?

Electromagnetic radiations propagate in vacuum with a velocity of _______________ metre/second?

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_____________________?