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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.

Which is the best tube arrangement (in a shell and tube heat exchanger) if the fluids are clean and non-fouling ?

A Square pitch

B Triangular pitch

C Diagonal square pitch

D None of these

Review Detailed Answer

Correct Answer: Triangular pitch

“The ratio of the total emissive power to the absorptivity for all bodies is same at ther-mal equilibrium”. This is ______________ law?

A Kirchoff’s

B Planck’s

C Wien’s displacement

D Stefan-Boltzmann

Review Detailed Answer

Correct Answer: Kirchoff’s

In a forward feed multiple effect evaporator, the pressure is ____________________?

A Highest in last effect

B Lowest in last effect

C Same in all effects

D Dependent on the number of effects

Review Detailed Answer

Correct Answer: Lowest in last effect

For a liquid in laminar flow through a very long tube, when the exit fluid temperature approaches the wall temperature, the equation to be used is______________?

A Nu = 0.023 Re0.8. Pr0.4

B Nu = (π/2) Gz

C Nu = (2/π) Gz

D Nu = 2Gz0.5

Review Detailed Answer

Correct Answer: Nu = (2/π) Gz

The non-dimensional temperature gradient in a liquid at the wall of a pipe is the ____________________?

A Heat flux

B Nusselt number

C Prandtl number

D Schmidt number

Review Detailed Answer

Correct Answer: Heat flux

The film co-efficient between condensing vapour and metal wall increases with _____________________?

A Increasing temperature of the vapour

B Decreasing temperature of the vapour

C Increasing viscosity of the film of condensate

D Increasing temperature drop

Review Detailed Answer

Correct Answer: Increasing temperature of the vapour

With increase in temperature, the thermal conductivity of most liquids_________________?

A Increases

B Decreases

C Remain same

D First increases upto a certain temperature and then becomes constant

Review Detailed Answer

Correct Answer: Decreases

In a shell and tube heat exchanger, putting a longitudinal baffle across the shell, forces the shell side fluid to pass _____________ through the heat exchanger ?

A Once

B Twice

C Thrice

D Four times

Review Detailed Answer

Correct Answer: Twice

The driving potential for the crystal growth during crystallisation is the _______________ of the solution?

A Concentration

B Viscosity

C Super-saturation

D Density

Review Detailed Answer

Correct Answer: Super-saturation

Heat flux, as defined in heat flow is analogous to _______________ in electricity flow?

A Current

B Voltage

C Resistance

D None of these

Review Detailed Answer

Correct Answer: Current

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Which is the best tube arrangement (in a shell and tube heat exchanger) if the fluids are clean and non-fouling ?

“The ratio of the total emissive power to the absorptivity for all bodies is same at ther-mal equilibrium”. This is ______________ law?

In a forward feed multiple effect evaporator, the pressure is ____________________?

For a liquid in laminar flow through a very long tube, when the exit fluid temperature approaches the wall temperature, the equation to be used is______________?

The non-dimensional temperature gradient in a liquid at the wall of a pipe is the ____________________?

The film co-efficient between condensing vapour and metal wall increases with _____________________?

With increase in temperature, the thermal conductivity of most liquids_________________?

In a shell and tube heat exchanger, putting a longitudinal baffle across the shell, forces the shell side fluid to pass _____________ through the heat exchanger ?

The driving potential for the crystal growth during crystallisation is the _______________ of the solution?

Heat flux, as defined in heat flow is analogous to _______________ in electricity flow?