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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 relative humidity of air decreases in-spite of an increase in the absolute humidity, when the____________________?

A Temperature rises

B Pressure rises

C Temperature falls

D Pressure falls

Review Detailed Answer

Correct Answer: Temperature rises

Selectivity of the solvent used in solvent extraction should be)_________________?

A 1

B > 1

C < 1

D 0

Review Detailed Answer

Correct Answer: 1

Nitrobenzene (boiling point = 210.6°C) is steam distilled at 1 atm pressure. Nitrobenzene will distil off _______________ °C?

A At < 100

B At > 210.6

C Between 100 and 210

D None of these

Review Detailed Answer

Correct Answer: At < 100

Molecular sieves are porous____________________?

A Alumina

B Silica

C Synthetic zeolites crystals/metal alumino-silicates

D None of these

Review Detailed Answer

Correct Answer: Synthetic zeolites crystals/metal alumino-silicates

In liquid-liquid extraction, the number of phases at plait point is __________________?

A 1

B 2

C 3

D 4

Review Detailed Answer

Correct Answer: 1

JD factor for mass transfer is a function of Reynolds number. Mass transfer by molecular diffusion from a single drop to surrounding still air is given by___________________?

A Nsh = 2

B Nst = 2

C Nsc = 2

D None of these

Review Detailed Answer

Correct Answer: Nsh = 2

If the overall efficiency and Murphree plate efficiency are equal, then both the equilibrium and operating lines are_______________?

A Straight

B Parallel

C Both A. & B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Both A. & B.

Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid) ?

A p = P

B p >>P

C p < P

D p << P

Review Detailed Answer

Correct Answer: p = P

Wetted wall tower experiment determines the__________________?

A Molal diffusivity

B Volumetric co-efficient

C Mass transfer co-efficient

D None of these

Review Detailed Answer

Correct Answer: Mass transfer co-efficient

Can a cooling tower cool water below the wet bulb temperature of inlet air ?

A Yes

B No

C Yes; but height of cooling tower will be prohibitively high

D Yes; but the air flow rate should be excessively high

Review Detailed Answer

Correct Answer: No

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

The relative humidity of air decreases in-spite of an increase in the absolute humidity, when the____________________?

Selectivity of the solvent used in solvent extraction should be)_________________?

Nitrobenzene (boiling point = 210.6°C) is steam distilled at 1 atm pressure. Nitrobenzene will distil off _______________ °C?

Molecular sieves are porous____________________?

In liquid-liquid extraction, the number of phases at plait point is __________________?

JD factor for mass transfer is a function of Reynolds number. Mass transfer by molecular diffusion from a single drop to surrounding still air is given by___________________?

If the overall efficiency and Murphree plate efficiency are equal, then both the equilibrium and operating lines are_______________?

Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid) ?

Wetted wall tower experiment determines the__________________?

Can a cooling tower cool water below the wet bulb temperature of inlet air ?