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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 Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same system is_______________________?

A 100

B 10

C 5

D 1

Review Detailed Answer

Correct Answer: 10

Large scale usage of flash distillation is practised in __________________?

A Soap manufacturing

B Ammonia synthesis plant

C Polymerisation industry

D Petroleum refining

Review Detailed Answer

Correct Answer: Petroleum refining

The boiling points of pure components of a binary system ________________ with increase in total pressure of the system ?

A Decreases

B Increases

C Remains unchanged

D May increase or decrease, depends on the system

Review Detailed Answer

Correct Answer: Increases

During sensible cooling process ______________________?

A Relative humidity decreases

B Relative humidity increases

C Wet bulb temperature decreases

D Both B. and C.

Review Detailed Answer

Correct Answer: Both B. and C.

The velocity, concentration and temperature boundary, for the boundary layer development on a flat plate during connective mass transfer will be same, if___________________?

A NSc = 1

B NSc = NPr = NLe

C NPr = NLe

D NSc = NLe

Review Detailed Answer

Correct Answer: NSc = NPr = NLe

Pick out the wrong statement ?

A Absorption factor is constant, when the equilibrium and operating lines are straight

B In case of a stripper, the equilibrium curve is always below the operating line

C In case of an absorber, the operating line is always above the equilibrium curve

D In the absorption of low solubility gases, the liquid film is the controlling resistance

Review Detailed Answer

Correct Answer: In case of a stripper, the equilibrium curve is always below the operating line

In triangular co-ordinates, the ternary composition point falls ___________________ of the triangle?

A In the corners

B Inside

C On the sides

D None of these

Review Detailed Answer

Correct Answer: Inside

Co-current absorbers are usually used when the gas to be dissolved in the liquid is ___________________?

A Sparingly soluble

B Highly soluble

C A pure substance

D A mixture

Review Detailed Answer

Correct Answer: A pure substance

When acetone is added in a two layer mixture of methyl isobutyl ketone and water at 30°C, the acetone distributes between the two layers and the composition of the layer follows two solubility curves. For this system ?

A As the acetone concentration increases, the solubility curves approach each other

B Both the phases become identical at a particular common point on both the solubility curves

C The distribution curve which is a plot between x (acetone concentration in one phase) and y

D All A., B. and C.

Review Detailed Answer

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

Molecular sieves are regenerated by heating to ______________ °C?

A < 150

B 200-330

C > 500

D > 1000

Review Detailed Answer

Correct Answer: 200-330

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same system is_______________________?

Large scale usage of flash distillation is practised in __________________?

The boiling points of pure components of a binary system ________________ with increase in total pressure of the system ?

During sensible cooling process ______________________?

The velocity, concentration and temperature boundary, for the boundary layer development on a flat plate during connective mass transfer will be same, if___________________?

Pick out the wrong statement ?

In triangular co-ordinates, the ternary composition point falls ___________________ of the triangle?

Co-current absorbers are usually used when the gas to be dissolved in the liquid is ___________________?

When acetone is added in a two layer mixture of methyl isobutyl ketone and water at 30°C, the acetone distributes between the two layers and the composition of the layer follows two solubility curves. For this system ?

Molecular sieves are regenerated by heating to ______________ °C?