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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 the irreversible unimolecular type, first order reaction, the fractional conversion at any time for constant volume system as compared to variable volume system is___________________?

A More

B Less

C Same

D Either A. or B., depends on other factors

Review Detailed Answer

Correct Answer: Same

Volume change for unimolecular type first order reaction as shown in the bellow figure, increases _____________ with time?

A Linearly

B Exponentially

C Parabolically

D Logarithmically

Review Detailed Answer

Correct Answer: Exponentially

Brunauer, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation ?

A Langmuir’s assumption applies to every adsorbed layer

B There is no dynamic equilibrium between successive layer

C The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer

D None of these

Review Detailed Answer

Correct Answer: There is no dynamic equilibrium between successive layer

An example of autothermal reactor operation is______________________?

A Sulphur dioxide oxidation

B Ethylene oxidation

C Benzene oxidation

D Ammonia synthesis

Review Detailed Answer

Correct Answer: Ethylene oxidation

A first order reaction is to be treated in a series of two mixed reactors. The total volume of the two reactors is minimum, when the reactors are_____________________?

A Equal in size

B Of different sizes

C Of such size that the ratio of their volumes is < 5

D None of these

Review Detailed Answer

Correct Answer: Equal in size

________________ resistance is not involved in the combustion of a carbon particle?

A Gas film

B Ash

C Chemical reaction

D None of these

Review Detailed Answer

Correct Answer: Ash

The value of ‘n’ for a chemical reaction A → B, whose reaction rate is → CA n, will be _______________ if the rate of the reaction increases by a factor of 8, when the concentration of is doubled?

A 0

B 1

C 2

D 3

Review Detailed Answer

Correct Answer: 3

A photochemical reaction is _______________ light?

A Initiated by

B Accompanied with emission of

C Catalysed by

D Used to convert heat energy into

Review Detailed Answer

Correct Answer: Initiated by

Participation of _______________ is involved in the occurrence of a chemical reaction?

A Protons

B Neutrons

C Electrons

D None of these

Review Detailed Answer

Correct Answer: Electrons

The first order series reaction as shown in the bellow figure is conducted in a batch reactor. The initial concentrations of A, B and C (CA0, CB0, CC0 respectively) are all non-zero. The variation of CB with reaction time will not show a maximum, if___________________?

A k2 CB0 > k1 CA0

B k CA0 > k2.CB0

C CB0 > CA0

D CA0 > CB0

Review Detailed Answer

Correct Answer: k2 CB0 > k1 CA0

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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All Topics 9594

In case of the irreversible unimolecular type, first order reaction, the fractional conversion at any time for constant volume system as compared to variable volume system is___________________?

Volume change for unimolecular type first order reaction as shown in the bellow figure, increases _____________ with time?

Brunauer, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation ?

An example of autothermal reactor operation is______________________?

A first order reaction is to be treated in a series of two mixed reactors. The total volume of the two reactors is minimum, when the reactors are_____________________?

________________ resistance is not involved in the combustion of a carbon particle?

The value of ‘n’ for a chemical reaction A → B, whose reaction rate is → CA n, will be _______________ if the rate of the reaction increases by a factor of 8, when the concentration of is doubled?

A photochemical reaction is _______________ light?

Participation of _______________ is involved in the occurrence of a chemical reaction?

The first order series reaction as shown in the bellow figure is conducted in a batch reactor. The initial concentrations of A, B and C (CA0, CB0, CC0 respectively) are all non-zero. The variation of CB with reaction time will not show a maximum, if___________________?