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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.

Absorption accompanied with chemical reaction is exemplified by the absorption of___________________?

A Ammonia in water

B Benzol present in coke oven gas by wash oil

C SO2 in alkaline solution

D All A., B. and C.

Review Detailed Answer

Correct Answer: SO2 in alkaline solution

Under conditions of flooding in packed tower, the gas pressure drop___________________?

A Decreases rapidly

B Increases rapidly

C Remain constant

D Is maximum

Review Detailed Answer

Correct Answer: Is maximum

Absorption factor is defined as (where, S1 = slope of the operating line S2 = slope of the equilibrium curve) ____________________?

A S2/S1

B S1/S2

C S1 – S2

D S1 × S2

Review Detailed Answer

Correct Answer: S1/S2

Detergent solution is dried to a powder in a ________________________?

A Spray dryer

B Spouted bed dryer

C Tunnel dryer

D Pan open to atmosphere

Review Detailed Answer

Correct Answer: Spray dryer

For the case of flow of air past a wet bulb thermometer (air water vapour system), the approximate value of h2/ky.Cz is around____________________?

A 0.60

B 0.24

C 1

D 0.72

Review Detailed Answer

Correct Answer: 1

To increase the absorption factor, (where, G = gas flow rate, S = solvent flow rate) ____________________?

A Increase both ‘G’ and ‘S’

B Decrease both ‘G’ and ‘S’

C Increase ‘S’ and decrease ‘G’

D Increase ‘G’ and decrease ‘S’

Review Detailed Answer

Correct Answer: Increase ‘S’ and decrease ‘G’

In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the________________________?

A Range is 15°F

B Approach is 10°F

C Both A. & B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Both A. & B.

Which of the following equipments is not used in liquid-liquid extraction ?

A Pachuka tank

B Agitated vessels

C Centrifugal extractors

D Packed towers

Review Detailed Answer

Correct Answer: Pachuka tank

When the ____________________ the relative humidity of air decreases, despite an increase in the absolute humidity?

A Temperature rises

B Pressure rises

C Temperature falls

D Pressure falls

Review Detailed Answer

Correct Answer: Temperature rises

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

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Absorption accompanied with chemical reaction is exemplified by the absorption of___________________?

Under conditions of flooding in packed tower, the gas pressure drop___________________?

Absorption factor is defined as (where, S1 = slope of the operating line S2 = slope of the equilibrium curve) ____________________?

Detergent solution is dried to a powder in a ________________________?

For the case of flow of air past a wet bulb thermometer (air water vapour system), the approximate value of h2/ky.Cz is around____________________?

To increase the absorption factor, (where, G = gas flow rate, S = solvent flow rate) ____________________?

In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the________________________?

Which of the following equipments is not used in liquid-liquid extraction ?

When the ____________________ the relative humidity of air decreases, despite an increase in the absolute humidity?

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