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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.

Conversion increases with increase in temperature in case of a/an ______________ reaction?

A Autocatalytic

B Irreversible

C Reversible endothermic

D Reversible exothermic

Review Detailed Answer

Correct Answer: Reversible endothermic

Considering the endothermic dissociation of CaCO3 in a closed vessel (CaCO3 ⇌ CaO + CO2), the pressure of CO2 increases, if____________________?

A A catalyst is added

B The temperature is increased

C An inert gas is pumped keeping the temperature constant

D None of these

Review Detailed Answer

Correct Answer: The temperature is increased

Thermodynamic equilibrium constant in a system is affected by___________________?

A Inerts

B Pressure

C Temperature

D All A., B. & C.

Review Detailed Answer

Correct Answer: Temperature

Sum of the powers of the concentration terms in the rate equation is called the _____________ of the reaction?

A Order

B Overall order

C Molecularity

D None of these

Review Detailed Answer

Correct Answer: Overall order

The rate at which a chemical substance reacts is proportional to its _____________________?

A Active mass

B Molecular weight

C Equivalent weight

D Atomic weight

Review Detailed Answer

Correct Answer: Active mass

Which of the following is the most suitable for isothermal operation?

A Batch reactor

B Back-mix reactor

C Plug-flow reactor

D Fixed bed reactor

Review Detailed Answer

Correct Answer: Back-mix reactor

An exothermic reaction takes place in an adiabatic reactor. The product temperature ______________ reactor feed temperature?

A Is always equal to

B Is always greater than

C Is always less than

D May be greater or less than

Review Detailed Answer

Correct Answer: Is always greater than

The rate of forward reaction, at chemical equilibrium is ______________ the rate of backward reaction?

A More than

B Less than

C Equal to

D Either B. or C.

Review Detailed Answer

Correct Answer: Equal to

For a first order chemical reaction, the rate constant_________________?

A Changes on changing the concentration units

B Is not a function of the unit of time

C Has unit of time-1

D None of these

Review Detailed Answer

Correct Answer: Has unit of time-1

When the reaction occurs in the diffusion controlled region, the apparent activation energy as measured is only _______________ the true value?

A Twice

B Half

C Equal

D None of these

Review Detailed Answer

Correct Answer: Half

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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All Topics 9594

Conversion increases with increase in temperature in case of a/an ______________ reaction?

Considering the endothermic dissociation of CaCO3 in a closed vessel (CaCO3 ⇌ CaO + CO2), the pressure of CO2 increases, if____________________?

Thermodynamic equilibrium constant in a system is affected by___________________?

Sum of the powers of the concentration terms in the rate equation is called the _____________ of the reaction?

The rate at which a chemical substance reacts is proportional to its _____________________?

Which of the following is the most suitable for isothermal operation?

An exothermic reaction takes place in an adiabatic reactor. The product temperature ______________ reactor feed temperature?

The rate of forward reaction, at chemical equilibrium is ______________ the rate of backward reaction?

For a first order chemical reaction, the rate constant_________________?

When the reaction occurs in the diffusion controlled region, the apparent activation energy as measured is only _______________ the true value?