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.

The ‘E’ curve for a non-ideal reactor defines the fraction of fluid having age between t and t + dt _____________________?

A At the inlet

B At the outlet

C In the reactor

D Averaged over the inlet and outlet

Review Detailed Answer

Correct Answer: At the outlet

Molecularity of an elementary reaction, P + Q → R + S is ____________________?

A 1

B 2

C 3

D 4

Review Detailed Answer

Correct Answer: 4

The exit age distribution of a fluid leaving a vessel (denoted by E) is used to study the extent of non-ideal flow in the vessel. The value of ∫∞ 0 E.dt is____________________?

A 0

B 1

C ∞

D √2π

Review Detailed Answer

Correct Answer: 1

Effectiveness factor E. of a catalyst pellet is defined as, E = (actual rate within pore of the catalyst)/(rate if not snowed by pore diffusion), Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus) ___________________?

A tan hT/T

B tan T/T

C tan hT/tan T

D None of these

Review Detailed Answer

Correct Answer: tan hT/T

Photo-chemical reactions occur in presence of ___________________?

A Sunlight

B Darkness

C Solid catalysts

D Monochromatic radiation only

Review Detailed Answer

Correct Answer: Sunlight

The conversion of a reactant, undergoing a first order reaction, at a time equal to three times the half life of the reaction is ?

A 0.875

B 0.5

C 0.425

D Data insufficient to calculate

Review Detailed Answer

Correct Answer: 0.875

The heat of reaction__________________?

A Depends on the pressure only

B Depends on the mechanism of reaction only

C Depends on both pressure and mechanism of reaction

D Is independent of the mechanism of reaction

Review Detailed Answer

Correct Answer: Is independent of the mechanism of reaction

Space velocity____________________?

A Describes the extensive operating characteristics of a tubular flow reactor

B Is the maximum feed rate per unit volume of reactor for a given conversion

C Is a measure of the ease of the reaction

D All A., B. and C.

Review Detailed Answer

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

A chemical reaction occurs, when the energy of the reacting molecules is ________________ the activation energy of reaction?

A Less than

B Equal to

C More than

D Equal to or more than

Review Detailed Answer

Correct Answer: Equal to

For a _____________ order reaction, the units of rate constant and rate of reaction are the same ?

A Zero

B First

C Second

D Fractional

Review Detailed Answer

Correct Answer: Zero

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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All Topics 9594

The ‘E’ curve for a non-ideal reactor defines the fraction of fluid having age between t and t + dt _____________________?

Molecularity of an elementary reaction, P + Q → R + S is ____________________?

The exit age distribution of a fluid leaving a vessel (denoted by E) is used to study the extent of non-ideal flow in the vessel. The value of ∫∞ 0 E.dt is____________________?

Effectiveness factor E. of a catalyst pellet is defined as, E = (actual rate within pore of the catalyst)/(rate if not snowed by pore diffusion), Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus) ___________________?

Photo-chemical reactions occur in presence of ___________________?

The conversion of a reactant, undergoing a first order reaction, at a time equal to three times the half life of the reaction is ?

The heat of reaction__________________?

Space velocity____________________?

A chemical reaction occurs, when the energy of the reacting molecules is ________________ the activation energy of reaction?

For a _____________ order reaction, the units of rate constant and rate of reaction are the same ?