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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.

The relation among various mass transfer co-efficients (M.T.C) for ideal gases is given by (where, Kc & Km are M.T.C. for equimolar counter diffusion with concentration & mole fraction respectively as the driving force. and, Kp= M.T.C. for diffusion of a gas through a stagnant inert gas with pressure as driving force) ?

A Kc = Kp = Km

B Kc = Kp/RT = Km . RT/P

C Kc = Kp . RT = Km . RT/p

D None of these

Review Detailed Answer

Correct Answer: Kc = Kp . RT = Km . RT/p

The temperature of water cooled in cooling tower is always _________________ temperature of entering air?

A More than the wet bulb

B Less than the wet bulb

C Equal to the wet bulb

D Equal to the dry bulb

Review Detailed Answer

Correct Answer: More than the wet bulb

Drying of a wet solid under constant drying conditions means the exposure of the wet solid to the air of constant____________________?

A Humidity

B Velocity

C Temperature

D All A., B. & C.

Review Detailed Answer

Correct Answer: All A., B. & C.

With the lowering of equilibrium pressure, at a given temperature, the amount of adsorbate on the adsorbent______________________?

A Increases

B Decreases

C Remain same

D Either A. or B., depends on the system

Review Detailed Answer

Correct Answer: Decreases

In liquid extraction, if the selectivity is unity, then___________________?

A Separation of the constituents is the most effective

B No separation will occur

C Amount of solvent required will be minimum

D Solvent flow rate should be very low

Review Detailed Answer

Correct Answer: No separation will occur

Mass transfer co-efficient is directly proportional to DAB according to the __________ theory?

A Film

B Penetration

C Surface-renewal

D None of these

Review Detailed Answer

Correct Answer: Film

___________________ extractor uses centrifugal force for separating the two phases?

A Treybal

B Scheibel

C Podbielniak

D None of these

Review Detailed Answer

Correct Answer: Podbielniak

The operating cost of a distillation column at minimum reflux ratio is____________________?

A Minimum

B Maximum

C Infinite

D Zero

Review Detailed Answer

Correct Answer: Minimum

A pure drug is administered as a sphere and as a cube. The amount of drug is the same in the two tablets. Assuming that the shape and size do not influence the mass transfer, the ratio of rate of dissolution in water at t = 0 for the cubic to spherical tablet is___________________?

A 0.54

B 1.04

C 1.24

D 1.94

Review Detailed Answer

Correct Answer: 1.24

With increase in temperature, the mutual solubility of two liquids___________________?

A Increases

B Decreases

C Remains unchanged

D Decreases exponentially

Review Detailed Answer

Correct Answer: Increases

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

The temperature of water cooled in cooling tower is always _________________ temperature of entering air?

Drying of a wet solid under constant drying conditions means the exposure of the wet solid to the air of constant____________________?

With the lowering of equilibrium pressure, at a given temperature, the amount of adsorbate on the adsorbent______________________?

In liquid extraction, if the selectivity is unity, then___________________?

Mass transfer co-efficient is directly proportional to DAB according to the __________ theory?

___________________ extractor uses centrifugal force for separating the two phases?

The operating cost of a distillation column at minimum reflux ratio is____________________?

A pure drug is administered as a sphere and as a cube. The amount of drug is the same in the two tablets. Assuming that the shape and size do not influence the mass transfer, the ratio of rate of dissolution in water at t = 0 for the cubic to spherical tablet is___________________?

With increase in temperature, the mutual solubility of two liquids___________________?