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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.

Prandtl number is the ratio of________________?

A Momentum diffusivity to mass diffusivity

B Momentum diffusivity to thermal diffusivity

C Thermal diffusivity to mass diffusivity

D Thermal diffusivity to momentum diffusivity

Review Detailed Answer

Correct Answer: Momentum diffusivity to thermal diffusivity

Prandtl number is given by__________________?

A CP μ/a

B hD/k

C CP μ/k

D μ/h CP

Review Detailed Answer

Correct Answer: CP μ/k

Trap is used to remove ________________ from steam pipe lines?

A Steam

B Condensate

C Non-condensable

D None of these

Review Detailed Answer

Correct Answer: Condensate

Wavelength corresponding to the maximum energy is inversely proportional to the absolute temperature. This is ________________ law?

A Stefan’s

B Dalton’s

C Wien’s

D Kirchoff’s

Review Detailed Answer

Correct Answer: Wien’s

Economy of a multiple effect evaporator depends upon the _____________________?

A Heat balance consideration

B Rate of heat transfer

C Both A. and B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Heat balance consideration

A wall has two layers of materials A and B; each made of a different material. Both the layers have the same thickness. The thermal conductivity of material A is twice that of B. Under the equilibrium, the temperature difference across the wall is 36°C. The temperature difference across the layer A is ______________ °C?

A 6

B 12

C 18

D 24

Review Detailed Answer

Correct Answer: 12

Temperature profile in steady state heat transfer is________________?

A Asymptotic

B Hyperbolic

C Parabolic

D Linear

Review Detailed Answer

Correct Answer: Linear

Maximum water velocity in tubes of a 1-2 shell and tube heat exchanger may be around _____________ metres/second?

A 1

B 10

C 20

D 30

Review Detailed Answer

Correct Answer: 1

A tank painted with which of the following coloured paints, would heat up maximum by radiation from sun ?

A Yellow paint

B White paint

C Black paint

D Grey paint

Review Detailed Answer

Correct Answer: Black paint

Three materials A, B and C of equal thickness and of thermal conductivity of 20, 40 & 60 kcal/hr. m. °C respectively are joined together. The temperature outside of A and C are 30°C and 100°C respectively. The interface between B and C will be at a temperature of ____________ °C?

A 40

B 95

C 70

D 50

Review Detailed Answer

Correct Answer: 70

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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All Topics 9594

Prandtl number is the ratio of________________?

Prandtl number is given by__________________?

Trap is used to remove ________________ from steam pipe lines?

Wavelength corresponding to the maximum energy is inversely proportional to the absolute temperature. This is ________________ law?

Economy of a multiple effect evaporator depends upon the _____________________?

Temperature profile in steady state heat transfer is________________?

Maximum water velocity in tubes of a 1-2 shell and tube heat exchanger may be around _____________ metres/second?

A tank painted with which of the following coloured paints, would heat up maximum by radiation from sun ?

Three materials A, B and C of equal thickness and of thermal conductivity of 20, 40 & 60 kcal/hr. m. °C respectively are joined together. The temperature outside of A and C are 30°C and 100°C respectively. The interface between B and C will be at a temperature of ____________ °C?