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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.

With increase in the order of reaction (for all positive reaction orders), the ratio of the volume of mixed reactor to the volume of plug flow reactor (for identical feed composition, flow rate and conversion)?

A Increases

B Decreases

C Remain same

D Increases linearly

Review Detailed Answer

Correct Answer: Increases

The rate of the heterogeneous catalytic reaction A(g) + B(g) → C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction is_______________?

A Absorption of A

B Surface reaction between absorbed A and absorbed B

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

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

Review Detailed Answer

Correct Answer: Surface reaction between absorbed A and B in the gas phase

The rate equation for the reaction represented by as shown in the bellow figure, is given by – rx = K1 . Cx/(1 + K2 Cx). At high value of Cx (i.e.., K2Cx > > 1), the order of the reaction and the rate constant are respectively___________________?

A Zero order & K1/K2

B Zero order & K1

C First order & K1

D First order & K1/K2

Review Detailed Answer

Correct Answer: Zero order & K1/K2

What is the dispersion number for a plug flow reactor ?

A 0

B ∞

C 1

D -1

Review Detailed Answer

Correct Answer: 0

Transition state theory gives the rate constant as__________________?

A K α e-E/RT

B K α eE/RT

C K α T . e-E/RT

D K α √T . e-E/RT

Review Detailed Answer

Correct Answer: K α T . e-E/RT

In case of a/an ______________ chemical reaction, conversion increases with the rise in temperature?

A Reversible exothermic

B Irreversible exothermic

C Irreversible endothermic

D Reversible endothermic

Review Detailed Answer

Correct Answer: Reversible endothermic

The synthesis of proteins and metabolism in biological objects occur in the presence of biocatalyst called_________________?

A A ferment or an enzyme

B Haemoglobin

C Fungi

D None of these

Review Detailed Answer

Correct Answer: Fungi

From collision theory, the reaction rate constant is proportional to_________________?

A exp (-E/RT)

B exp (-E/2RT)

C √T

D Tm exp (-E/RT)

Review Detailed Answer

Correct Answer: exp (-E/RT)

The unit of frequency factor in Arrhenius equation is_______________?

A Same as that of rate constant

B Same as that of activation energy

C Dimensionless

D None of these

Review Detailed Answer

Correct Answer: Same as that of rate constant

The ratio of moles of a reactant converted into the desired product to that converted into unwanted product is called_________________?

A Operational yield

B Relative yield

C Selectivity

D None of these

Review Detailed Answer

Correct Answer: Selectivity

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

With increase in the order of reaction (for all positive reaction orders), the ratio of the volume of mixed reactor to the volume of plug flow reactor (for identical feed composition, flow rate and conversion)?

The rate of the heterogeneous catalytic reaction A(g) + B(g) → C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction is_______________?

The rate equation for the reaction represented by as shown in the bellow figure, is given by – rx = K1 . Cx/(1 + K2 Cx). At high value of Cx (i.e.., K2Cx > > 1), the order of the reaction and the rate constant are respectively___________________?

What is the dispersion number for a plug flow reactor ?

Transition state theory gives the rate constant as__________________?

In case of a/an ______________ chemical reaction, conversion increases with the rise in temperature?

The synthesis of proteins and metabolism in biological objects occur in the presence of biocatalyst called_________________?

From collision theory, the reaction rate constant is proportional to_________________?

The unit of frequency factor in Arrhenius equation is_______________?

The ratio of moles of a reactant converted into the desired product to that converted into unwanted product is called_________________?