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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.

Which of the following processes is not an example of adsorption applied to gaseous separations ?

A Recovery of valuable solvent vapors from dilute mixture with air and other gases

B Dehumidification of air and gas

C Removal of objectionable odour and impurities from industrial gases

D Decolouration of yellow glycerine

Review Detailed Answer

Correct Answer: Decolouration of yellow glycerine

The cooling effect in a cooling tower can be speeded up by _______________________?

A Increasing the air velocity and area of exposed wet surface

B Reducing the barometric pressure

C Reducing the humidity of the air

D All A., B. and C.

Review Detailed Answer

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

To remove all the moisture from a wet solid it requires exposure to _____________ air?

A Perfectly dry

B Highly humid

C High temperature

D None of these

Review Detailed Answer

Correct Answer: Perfectly dry

Pore size of the molecular sieve 5A is ____________________ mm ?

A 5

B 0.5

C 0.05

D 50

Review Detailed Answer

Correct Answer: 5

For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG: mass transfer co-efficient, moles/m2, a: interfacial area per unit volume of tower) ?

A G/(FG . a)

B FG/(G . a)

C (G . a)/FG

D L/(FG . G)

Review Detailed Answer

Correct Answer: G/(FG . a)

Perforated plate towers are unique for solvent extraction because, they provide_____________________?

A Higher contact area

B Better contact of the phase

C Repeated coalescence & redispersion of the drop phase

D None of these

Review Detailed Answer

Correct Answer: Repeated coalescence & redispersion of the drop phase

The equation, NA = (DAB . Pt /RTZ . PBM) (PA1 – PA2) is for_______________________?

A Fick’s second law of diffusion

B Steady state diffusion for stagnant case

C Liquid M.T.C. by Higbie penetration theory

D None of these

Review Detailed Answer

Correct Answer: Steady state diffusion for stagnant case

For the same system, if the same liquid used in an absorber is decreased, the tower height will__________________?

A Increase

B Decrease

C Remain unaffected

D Decrease or increase; depends on the type of liquid

Review Detailed Answer

Correct Answer: Increase

The commonly used solvent in supercritical extraction is_____________________?

A Methyl ethyl ketone

B Water

C Carbon tetrachloride

D Carbon dioxide

Review Detailed Answer

Correct Answer: Carbon dioxide

Cox chart, which is useful in the design of distillation column particularly for petroleum hydrocarbons, is a plot of (where, P = vapor pressure, T = temperature) ?

A log P vs. T

B log P vs. log T

C T vs. P

D P vs. log T

Review Detailed Answer

Correct Answer: log P vs. T

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Which of the following processes is not an example of adsorption applied to gaseous separations ?

The cooling effect in a cooling tower can be speeded up by _______________________?

To remove all the moisture from a wet solid it requires exposure to _____________ air?

Pore size of the molecular sieve 5A is ____________________ mm ?

For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG: mass transfer co-efficient, moles/m2, a: interfacial area per unit volume of tower) ?

Perforated plate towers are unique for solvent extraction because, they provide_____________________?

The equation, NA = (DAB . Pt /RTZ . PBM) (PA1 – PA2) is for_______________________?

For the same system, if the same liquid used in an absorber is decreased, the tower height will__________________?

The commonly used solvent in supercritical extraction is_____________________?

Cox chart, which is useful in the design of distillation column particularly for petroleum hydrocarbons, is a plot of (where, P = vapor pressure, T = temperature) ?