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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.

High pressure at the bottom of a distillation tower handling heat sensitive materials results in _____________________?

A Thermal decomposition of bottoms

B Increased relative volatility

C Erosion of the tower

D Very efficient operation

Review Detailed Answer

Correct Answer: Thermal decomposition of bottoms

Which of the following is an undesirable property in a tower packing ?

A Large surface per unit volume

B Large free cross-section

C Low weight per unit volume

D Large weight of liquid retained

Review Detailed Answer

Correct Answer: Large weight of liquid retained

Which of the following is directly concerned with Psychrometry ?

A Lewis relationship

B Galileo number

C Weber number

D Dean number

Review Detailed Answer

Correct Answer: Lewis relationship

At the boiling point of the liquid at the prevailing pressure, the saturated absolute humidity becomes______________________?

A 1

B 0

C ∞

D None of these

Review Detailed Answer

Correct Answer: ∞

Mass transfer co-efficient is directly proportional to DAB 0.5, according to ________________ theory ?

A Penetration

B Surface renewal

C Film

D None of these

Review Detailed Answer

Correct Answer: Penetration

Which of the following gas-liquid contacting devices incurs the least pressure drop for a particular duty ?

A Grid tray tower

B Perforated tray tower

C Wetted wall tower

D Bubble cap tower

Review Detailed Answer

Correct Answer: Bubble cap tower

Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m2 and the solvent flow, rate is 400 moles of S/m2. hr. The equilibrium data is represented by Y = 3X2 , where Y is in moles of a A/moles of B and X is in moles A/moles of S. The maximum percentage extraction achieved in the unit is_________________________?

A 25%

B 50%

C 70%

D 90%

Review Detailed Answer

Correct Answer: 50%

According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity) ?

A D

B D2

C D0.5

D 1/D

Review Detailed Answer

Correct Answer: D

For a distillation column operating at minimum reflux, the_______________________?

A Concentration of liquid and vapour leaving a plate will be same

B Reflux ratio will be maximum

C Number of plates required will be maximum

D None of these

Review Detailed Answer

Correct Answer: Number of plates required will be maximum

_______________ diffusion is used for separating the isotopes of methane ?

A Thermal

B Pressure

C Concentration

D Force

Review Detailed Answer

Correct Answer: Thermal

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

High pressure at the bottom of a distillation tower handling heat sensitive materials results in _____________________?

Which of the following is an undesirable property in a tower packing ?

Which of the following is directly concerned with Psychrometry ?

At the boiling point of the liquid at the prevailing pressure, the saturated absolute humidity becomes______________________?

Mass transfer co-efficient is directly proportional to DAB 0.5, according to ________________ theory ?

Which of the following gas-liquid contacting devices incurs the least pressure drop for a particular duty ?

According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity) ?

For a distillation column operating at minimum reflux, the_______________________?

_______________ diffusion is used for separating the isotopes of methane ?