MCQsDrive | MCQsDrive

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 pipe flow, heat is transferred from hot wall to the liquid by__________________?

A Conduction only

B Forced convection only

C Forced convection and conduction

D Free and forced convection

Review Detailed Answer

Correct Answer: Forced convection and conduction

Heat transfer rate described by Fourier’s law will decrease, if the _____________ increases?

A Thermal conductivity

B Thickness

C Temperature difference

D Heat transfer area

Review Detailed Answer

Correct Answer: Thickness

In a co-current double pipe heat exchanger used for condensing saturated steam over the inner tube, if the entrance and exit conditions of the coolant are interchanged, then the rate of condensation will___________________?

A Increase

B Decrease

C Remain unchanged

D Either increase or decrease; depends on the coolant flow rate

Review Detailed Answer

Correct Answer: Remain unchanged

Which one gives the monochromatic emissive power for black body radiation ?

A Planck’s law

B Kirchhoff’s law

C Wien’s law

D Stefan-Boltzmann law

Review Detailed Answer

Correct Answer: Planck’s law

Absorptivity and reflectivity of a perfect black body are respectively _______________?

A 1 and 0

B 0 and 1

C 1 and ∞

D 0 and 0.5

Review Detailed Answer

Correct Answer: 1 and 0

Water is normally used as a coolant in the heat exchange equipments mainly because of its___________________?

A Abundance & high heat capacity

B Low density

C Low viscosity

D High fluidity

Review Detailed Answer

Correct Answer: Abundance & high heat capacity

Stefan-Boltzmann law applies to _____________ body?

A Black

B White

C Grey

D Any colour

Review Detailed Answer

Correct Answer: Black

A BTU/hr.ft.2 °F is equal to_________________?

A 1 kcal/hr. m2°C

B 4.88 kcal/hr. m.2°C

C 1 kcal/hr. m2.°K

D None of these

Review Detailed Answer

Correct Answer: 4.88 kcal/hr. m.2°C

A _____________ evaporator employs an annular downtake?

A Basket type

B Horizontal

C Long tube vertical

D None of these

Review Detailed Answer

Correct Answer: Basket type

With increase in temperature, the thermal conductivity of fresh lubricating oil ___________________?

A Increases

B Decreases

C Remains unchanged

D May increase or decrease; depends on its composition

Review Detailed Answer

Correct Answer: Decreases

Showing 131 to 140 of 510 results

Contact Info

Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

In pipe flow, heat is transferred from hot wall to the liquid by__________________?

Heat transfer rate described by Fourier’s law will decrease, if the _____________ increases?

In a co-current double pipe heat exchanger used for condensing saturated steam over the inner tube, if the entrance and exit conditions of the coolant are interchanged, then the rate of condensation will___________________?

Which one gives the monochromatic emissive power for black body radiation ?

Absorptivity and reflectivity of a perfect black body are respectively _______________?

Water is normally used as a coolant in the heat exchange equipments mainly because of its___________________?

Stefan-Boltzmann law applies to _____________ body?

A BTU/hr.ft.2 °F is equal to_________________?

A _____________ evaporator employs an annular downtake?

With increase in temperature, the thermal conductivity of fresh lubricating oil ___________________?