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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.

1 BTU/hr.ft.°F is equal to _____________ kcal/hr. m.°C?

A 1.49

B 1

C 4.88

D None of these

Review Detailed Answer

Correct Answer: 1.49

A _____________ surface has the maximum thermal emissivity out of the following ?

A Black & smooth

B Black & rough

C White & smooth

D White & rough

Review Detailed Answer

Correct Answer: Black & rough

A hollow sphere and a solid sphere of the same material and equal radii are heated to the same temperature. In this case ?

A The cooling rate will be the same for the two spheres and hence the two spheres will have

B Both the spheres will emit equal amount of radiation per unit time in the beginning

C Both will absorb equal amount of radiation from the surrounding in the beginning

D Both B. & C.

Review Detailed Answer

Correct Answer: Both B. & C.

Which of the following has the highest thermal conductivity ?

A Brick

B Air

C Water

D Silver

Review Detailed Answer

Correct Answer: Silver

Circulation pump is located below the evaporator to___________________?

A Avoid cavitation

B Avoid frequent priming

C Create more suction head

D None of these

Review Detailed Answer

Correct Answer: Create more suction head

Economy of an evaporator is influenced by the_____________________?

A Steam pressure

B Feed temperature

C Number of effect

D Both B. & C.

Review Detailed Answer

Correct Answer: Both B. & C.

‘Fouling factor’ used in the design of a multipass shell and tube heat exchanger is a_____________________?

A Non-dimensional factor

B Factor of safety

C Conversion factor for individual film heat transfer co-efficient to overall heat transfer coefficient

D None of these

Review Detailed Answer

Correct Answer: Factor of safety

At Pr > 1, conduction in an ordinary fluid flowing through a heated pipe is limited to the___________________?

A Buffer zone

B Turbulent core

C Both A. and B.

D Viscous sub-layer

Review Detailed Answer

Correct Answer: Viscous sub-layer

Film boiling occurs at ________________ pressure?

A Atmospheric

B Sub-atmospheric

C Negative

D Very high

Review Detailed Answer

Correct Answer: Very high

Choose the most important factor on which the heat conducted through a wall in a unit time will depend on ?

A Thickness of the wall

B Area of the wall perpendicular to heat flow

C Material of the wall

D Temperature difference between the two surfaces of the wall

Review Detailed Answer

Correct Answer: Temperature difference between the two surfaces of the wall

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

1 BTU/hr.ft.°F is equal to _____________ kcal/hr. m.°C?

A _____________ surface has the maximum thermal emissivity out of the following ?

A hollow sphere and a solid sphere of the same material and equal radii are heated to the same temperature. In this case ?

Which of the following has the highest thermal conductivity ?

Circulation pump is located below the evaporator to___________________?

Economy of an evaporator is influenced by the_____________________?

‘Fouling factor’ used in the design of a multipass shell and tube heat exchanger is a_____________________?

At Pr > 1, conduction in an ordinary fluid flowing through a heated pipe is limited to the___________________?

Film boiling occurs at ________________ pressure?

Choose the most important factor on which the heat conducted through a wall in a unit time will depend on ?