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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.

Half life period of decomposition of a liquid ‘A’ by irreversible first order reaction is 12 minutes. The time required for 75% conversion of ‘A’ is _____________ minutes?

A 18

B 24

C 6

D 12

Review Detailed Answer

Correct Answer: 24

The fractional volume change between no conversion and complete conversion, for the isothermal gas phase reaction, 2A → R, is___________________?

A 0.5

B -0.5

C 1

D 1.5

Review Detailed Answer

Correct Answer: 0.5

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

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Half life period of decomposition of a liquid ‘A’ by irreversible first order reaction is 12 minutes. The time required for 75% conversion of ‘A’ is _____________ minutes?

The fractional volume change between no conversion and complete conversion, for the isothermal gas phase reaction, 2A → R, is___________________?

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 ___________________?