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 a heterogeneous catalytic reaction, A + B → C, with equimole feed of A and B, the initial rate – rA0 is invariant with total pressure. The rate controlling step is______________________?

A Surface Kc/(1 + TS) reaction between absorbed A and B in the gas phase

B Surface reaction between absorbed A and absorbed B

C Surface reaction between A in the gas phase and absorbed B

D Desorption of C

Review Detailed Answer

Correct Answer: Desorption of C

Arrhenius equation represents graphically the variation between the ______________ and temperature?

A Rate of reaction

B Frequency factor

C Rate constant

D Activation energy

Review Detailed Answer

Correct Answer: Rate constant

The extent of a reaction is ___________________?

A Different for reactants and products

B Dimensionless

C Depends on the stoichiometric co-efficient

D All of the above

Review Detailed Answer

Correct Answer: All of the above

For the reversible reaction A ⇌ 2B, if the equilibrium constant K is 0.05 mole/litre; starting from initially 2 moles of A and zero moles of B, how many moles will be formed at equilibrium ?

A 0.253

B 0.338

C 0.152

D 0.637

Review Detailed Answer

Correct Answer: 0.338

Bulk diffusion in catalyst pore _______________ with increase in pressure?

A Increases

B Decreases

C Remains unchanged

D Increases exponentially

Review Detailed Answer

Correct Answer: Decreases

Autocatalytic reactions are best carried out in a_________________?

A CSTR

B CSTR in series

C Plug flow reactor

D Recycle reactor

Review Detailed Answer

Correct Answer: Recycle reactor

Cold shot cooling is only practical when the feed temperature is ______________ than the reaction temperature?

A Higher

B Much higher

C Lower

D Much lower

Review Detailed Answer

Correct Answer: Much lower

The rate constant of a reaction is a function of the ___________________?

A Time of reaction

B Temperature of the system

C Extent of reaction

D Initial concentration of the reactants

Review Detailed Answer

Correct Answer: Temperature of the system

The vessel dispersion number (D/μL) for plug flow is_________________?

A 0

B 500

C 750

D ∞

Review Detailed Answer

Correct Answer: 0

A catalyst promoter_________________?

A Improves the activity of a catalyst

B Acts as a catalyst support

C Itself has very high activity

D All A., B. and C.

Review Detailed Answer

Correct Answer: Improves the activity of a catalyst

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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All Topics 9594

For a heterogeneous catalytic reaction, A + B → C, with equimole feed of A and B, the initial rate – rA0 is invariant with total pressure. The rate controlling step is______________________?

Arrhenius equation represents graphically the variation between the ______________ and temperature?

The extent of a reaction is ___________________?

For the reversible reaction A ⇌ 2B, if the equilibrium constant K is 0.05 mole/litre; starting from initially 2 moles of A and zero moles of B, how many moles will be formed at equilibrium ?

Bulk diffusion in catalyst pore _______________ with increase in pressure?

Autocatalytic reactions are best carried out in a_________________?

Cold shot cooling is only practical when the feed temperature is ______________ than the reaction temperature?

The rate constant of a reaction is a function of the ___________________?

The vessel dispersion number (D/μL) for plug flow is_________________?

A catalyst promoter_________________?