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.

A solid material shows case hardening properties while drying. Which of the following should be controlled to control the drying process ?

A Flow rate of inlet air

B Relative humidity of outlet air

C Humidity of inlet air

D Temperature of the solid

Review Detailed Answer

Correct Answer: Temperature of the solid

With increase in the concentration of the adsorbate, the integral heat of adsorption____________________?

A Increases

B Decreases

C Remains unchanged

D May increase or decrease; depends on the type of adsorbate

Review Detailed Answer

Correct Answer: Decreases

Air initially at 101. 3 kPa and 40°C and with a relative humidity of 50%, is cooled at constant pressure to 30°C. The cooled air has a____________________?

A Higher dew point

B Higher absolute (specific) humidity

C Higher relative humidity

D Higher wet bulb temperature

Review Detailed Answer

Correct Answer: Higher relative humidity

An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is ?

A 9.21

B 4.605

C 100

D 0.001

Review Detailed Answer

Correct Answer: 4.605

_______________ columns are used for liquid dispersion in a continuous gas phase ?

A Packed

B Pulse

C Bubble cap

D Sieve plate

Review Detailed Answer

Correct Answer: Packed

The efficiency of a plate column will be maximum, when the flow is ideal __________________ the plate?

A Across

B Above

C Both A. & B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Both A. & B.

Separation of a mixture of two gases by absorption in the liquid solvent depends upon the difference in their____________________?

A Viscosity

B Density

C Solubility

D Relative volatility

Review Detailed Answer

Correct Answer: Solubility

Priming in a distillation column_________________?

A Results from very low gas velocity

B Is desirable from point efficiency consideration

C Is characterised by the presence of foam throughout the space between trays

D Reduces the overall pressure drop

Review Detailed Answer

Correct Answer: Is characterised by the presence of foam throughout the space between trays

The amount of steam required per unit quantity of distillate in case of steam distillation will be reduced by __________________?

A Raising the temperature

B Lowering the total pressure

C Both A. and B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Both A. and B.

The dew point of a saturated gas phase equals the ________________ temperature?

A Gas

B Room

C Wet bulb

D None of these

Review Detailed Answer

Correct Answer: Gas

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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All Topics 9594

A solid material shows case hardening properties while drying. Which of the following should be controlled to control the drying process ?

With increase in the concentration of the adsorbate, the integral heat of adsorption____________________?

Air initially at 101. 3 kPa and 40°C and with a relative humidity of 50%, is cooled at constant pressure to 30°C. The cooled air has a____________________?

An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is ?

_______________ columns are used for liquid dispersion in a continuous gas phase ?

The efficiency of a plate column will be maximum, when the flow is ideal __________________ the plate?

Separation of a mixture of two gases by absorption in the liquid solvent depends upon the difference in their____________________?

Priming in a distillation column_________________?

The amount of steam required per unit quantity of distillate in case of steam distillation will be reduced by __________________?

The dew point of a saturated gas phase equals the ________________ temperature?