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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.

In case of calcination of limestone, CaCO3 CaO + CO2, the addition of more of CaO will result in _______________ in the concentration of CO2?

A No change

B Increase

C Decrease

D Unpredictable from the data

Review Detailed Answer

Correct Answer: No change

The rate of the chemical reaction A → B doubles as the concentration of A i.e.., CA is doubled. If rate of reaction is proportional to CA n, then what is the value of n for this reaction ?

A 0

B 0.5

C 1

D 2

Review Detailed Answer

Correct Answer: 1

Arrhenius equation shows the variation of ___________________ with temperature?

A Reaction rate

B Rate constant

C Energy of activation

D Frequency factor

Review Detailed Answer

Correct Answer: Rate constant

The rate constant of a chemical reaction increases by increasing the______________________?

A Temperature

B Pressure

C Reactant’s concentration

D None of these

Review Detailed Answer

Correct Answer: Temperature

What is the dispersion number for a CSTR ?

A 0

B 1

C < 1

D ∞

Review Detailed Answer

Correct Answer: ∞

Catalyst is a substance, which ________________ chemical reaction?

A Increases the speed of a

B Decreases the speed of a

C Can either increase or decrease the speed of a

D Alters the value of equilibrium constant in a reversible

Review Detailed Answer

Correct Answer: Can either increase or decrease the speed of a

_____________ gas is normally employed in B.E.T. method of finding out the surface area of catalyst?

A N2

B H2

C CO2

D He

Review Detailed Answer

Correct Answer: N2

The equilibrium constant of a catalytic chemical reaction _______________ due to the presence of?

A Increases

B Decreases

C Remain unaffected

D Unpredictable from the data

Review Detailed Answer

Correct Answer: Remain unaffected

Following isothermal kinetic data are obtained in a basket type of mixed flow reactor for a porous catalyst. Determine the role of pore diffusion and external mass transfer processes ?

A Strong pore diffusion control and mass transfer not controlling

B Both pore diffusion and mass transfer not controlling

C Both pore diffusion and mass transfer controlling

D Mass transfer controlling

Review Detailed Answer

Correct Answer: Strong pore diffusion control and mass transfer not controlling

A second order liquid phase reaction, A → B, is carried out in a mixed flow reactor operated in semi batch mode (no exit stream). The reactant A at concentration CAF is fed to the reactor at a volumetric flow rate of F. The volume of the reacting mixture is V and the density of the liquid mixture is constant. The mass balance for A is_______________________?

A d(VCA)/dt = -F (CAF – CA) – kCA2V

B d(VCA)/dt = F (CAF – CA) – kCA2V

C d(VCA)/dt = -FCA – kCA2V

D d(VCA)/dt = FCAF – kCA2V

Review Detailed Answer

Correct Answer: d(VCA)/dt = FCAF – kCA2V

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

In case of calcination of limestone, CaCO3 CaO + CO2, the addition of more of CaO will result in _______________ in the concentration of CO2?

The rate of the chemical reaction A → B doubles as the concentration of A i.e.., CA is doubled. If rate of reaction is proportional to CA n, then what is the value of n for this reaction ?

Arrhenius equation shows the variation of ___________________ with temperature?

The rate constant of a chemical reaction increases by increasing the______________________?

What is the dispersion number for a CSTR ?

Catalyst is a substance, which ________________ chemical reaction?

_____________ gas is normally employed in B.E.T. method of finding out the surface area of catalyst?

The equilibrium constant of a catalytic chemical reaction _______________ due to the presence of?

Following isothermal kinetic data are obtained in a basket type of mixed flow reactor for a porous catalyst. Determine the role of pore diffusion and external mass transfer processes ?