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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.

For water-ethanol system, the minimum reflux ratio_____________________?

A Is computed from the slope of the upper operating line that is tangent to the equilibrium curve

B Is computed from the intercept of the operating line

C Cannot be computed

D Is the optimum reflux ratio

Review Detailed Answer

Correct Answer: Is computed from the slope of the upper operating line that is tangent to the equilibrium curve

Penetration theory relates the average mass transfer co-efficient (K) with diffusivity D. as____________________?

A K ∝D

B K ∝√D

C K ∝D1.5

D K ∝D2

Review Detailed Answer

Correct Answer: K ∝√D

The reflux to a distillation column is 100 moles/hr, when the overhead product rate is 50 moles/hr. The reflux ratio is____________________?

A 2

B 0.5

C 50

D 150

Review Detailed Answer

Correct Answer: 2

Bound moisture is that liquid which exerts an equilibrium vapor pressure ________________ that of the pure liquid at the given temperature ?

A Less than

B More than

C Equal to

D Either A. or B.; depends on the solid

Review Detailed Answer

Correct Answer: Less than

With increase in temperature, the rate of leaching increases, because the___________________?

A Diffusivity of solute increases

B Viscosity of solvent decreases

C Thermal conductivity of solute increases

D None of these

Review Detailed Answer

Correct Answer: Diffusivity of solute increases

Leaching rate is independent of the________________?

A Agitation

B Temperature

C Particle size

D None of these

Review Detailed Answer

Correct Answer: None of these

Sodium bicarbonate is produced during soda ash manufacture using a _______________ tower?

A Plate

B Baffle

C Packed

D None of these

Review Detailed Answer

Correct Answer: Baffle

The cooling effect in a cooling tower cannot be increased by_____________________?

A Increasing the air velocity over the wet surfaces

B Reducing the humidity of entering air

C Lowering the barometric pressure

D None of these

Review Detailed Answer

Correct Answer: None of these

For a single component absorber, the operating line is straight only when plotted in term of ______________ units?

A Partial pressure

B Mole ratio

C Mole fraction

D None of these

Review Detailed Answer

Correct Answer: Mole ratio

Dimension of mass diffusivity is the same as that of_____________________?

A Kinematic viscosity

B Dynamic viscosity

C Surface tension

D Pressure

Review Detailed Answer

Correct Answer: Kinematic viscosity

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

For water-ethanol system, the minimum reflux ratio_____________________?

Penetration theory relates the average mass transfer co-efficient (K) with diffusivity D. as____________________?

The reflux to a distillation column is 100 moles/hr, when the overhead product rate is 50 moles/hr. The reflux ratio is____________________?

Bound moisture is that liquid which exerts an equilibrium vapor pressure ________________ that of the pure liquid at the given temperature ?

With increase in temperature, the rate of leaching increases, because the___________________?

Leaching rate is independent of the________________?

Sodium bicarbonate is produced during soda ash manufacture using a _______________ tower?

The cooling effect in a cooling tower cannot be increased by_____________________?

For a single component absorber, the operating line is straight only when plotted in term of ______________ units?

Dimension of mass diffusivity is the same as that of_____________________?