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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.

For the liquid phase parallel reactions__________________?

A Low temperature in a CSTR

B High temperature in a CSTR

C Low temperature in a PFR

D High temperature in a PFR

Review Detailed Answer

Correct Answer: High temperature in a PFR

Organic catalysts differ from the inorganic catalyst in the sense that the former is________________?

A Active at cryogenic temperatures only

B Prohibitively costly

C Proteinous in nature

D Active at very high temperature only

Review Detailed Answer

Correct Answer: Proteinous in nature

For the gaseous reaction 2A → B, where the feed consists of 50 mole % A and 50 mole % inerts, the expansion factor is___________________?

A 1

B -0.5

C -0.25

D 0

Review Detailed Answer

Correct Answer: -0.25

The rate at which a chemical substance reacts is proportional to its____________________?

A Active mass

B Equivalent weight

C Molecular weight

D None of these

Review Detailed Answer

Correct Answer: Active mass

For any reaction, we may write conversion as a function of______________________?

A Time

B Temperature

C Concentration

D All A., B. & C.

Review Detailed Answer

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

When a high liquid hold up is required in a reactor for gas liquid reaction, use ______________ column?

A Packed

B Spray

C Tray

D Bubble

Review Detailed Answer

Correct Answer: Bubble

Helium-mercury method is used for the measurement of the ________________ of the catalyst?

A Surface area

B Porosity

C Pore volume

D Both B. & C.

Review Detailed Answer

Correct Answer: Both B. & C.

With increase in the space time of an irreversible isothermal reaction being carried out in a P.F. reactor, the conversion will________________?

A Increase

B Decrease

C Remain same

D Data in insufficient; can’t be predicted

Review Detailed Answer

Correct Answer: Increase

If the rate of a chemical reaction becomes slower at a given temperature, then the__________________?

A Initial concentration of the reactants remains constant

B Free energy of activation is lower

C Entropy changes

D Free energy of activation is higher

Review Detailed Answer

Correct Answer: Free energy of activation is higher

For an isothermal variable volume batch reactor, the following relation is applicable for a first order irreversible reaction?

A XA = k . t

B [CA0/(1 + εA XA)] (dXA/dt) = k

C -ln(1 – XA) = kt

D εA . ln (1 – XA) = k . t

Review Detailed Answer

Correct Answer: [CA0/(1 + εA XA)] (dXA/dt) = k

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

For the liquid phase parallel reactions__________________?

Organic catalysts differ from the inorganic catalyst in the sense that the former is________________?

For the gaseous reaction 2A → B, where the feed consists of 50 mole % A and 50 mole % inerts, the expansion factor is___________________?

The rate at which a chemical substance reacts is proportional to its____________________?

For any reaction, we may write conversion as a function of______________________?

When a high liquid hold up is required in a reactor for gas liquid reaction, use ______________ column?

Helium-mercury method is used for the measurement of the ________________ of the catalyst?

With increase in the space time of an irreversible isothermal reaction being carried out in a P.F. reactor, the conversion will________________?

If the rate of a chemical reaction becomes slower at a given temperature, then the__________________?

For an isothermal variable volume batch reactor, the following relation is applicable for a first order irreversible reaction?