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.

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

Reverse reaction in a chemical equilibrium is favoured by the________________?

A Removal of one of the products regularly

B Increase in the concentration of one of the products

C Increase in the concentration of one of the reactants

D None of these

Review Detailed Answer

Correct Answer: Increase in the concentration of one of the products

With increase in temperature, the equilibrium _______________ rises in case of endothermic reaction?

A Constant

B Conversion

C Both A. & B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Conversion

What is the unit of the rate constant in a chemical reaction in which 10% of the reactant decomposes in one hour, 20% in two hours, 30% in three hours and so on ?

A Litre/mole.second

B Moles/litre.second

C Litre/mole

D Litre/second

Review Detailed Answer

Correct Answer: Litre/mole.second

Which of the following is an autocatalytic reaction ?

A Photochemical reactions

B Microbial fermentation reaction

C Enzyme fermentation reaction

D Ammonia synthesis reaction

Review Detailed Answer

Correct Answer: Microbial fermentation reaction

An isothermal irreversible reaction is being carried out in an ideal tubular flow reactor. The conversion in this case will ______________ with decrease in space time?

A Increase

B Increase exponentially

C Decrease

D Remain unchanged

Review Detailed Answer

Correct Answer: Decrease

During manufacture of H2SO4, the oxidation of SO2 to SO3 by oxygen is an endothermic reaction. The yield of SO3 will be maximised, if the _____________________?

A Temperature is increased

B Pressure is reduced

C Temperature is increased and pressure is reduced

D Temperature is reduced and pressure is increased

Review Detailed Answer

Correct Answer: Temperature is reduced and pressure is increased

From Arrhenius law, a plot of loge K versus 1/T gives a straight line with a slope of (-E/R). The unit of E/R is___________________?

A k cal

B k cal/°K

C °K

D k cal. °K

Review Detailed Answer

Correct Answer: °K

Pick out the wrong statement ?

A For a first order consecutive reaction, a tubular flow reactor as compared to a stirred tank

B For an ideal mixed reactor at steady state, the exit stream has the same composition as fluid

C Plug flow reactor (PFR) is always smaller than mixed reactor for all positive reaction orders

D Reaction rate does not decrease appreciably as the reaction proceeds in case of an

Review Detailed Answer

Correct Answer: For a first order consecutive reaction, a tubular flow reactor as compared to a stirred tank

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

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?

Reverse reaction in a chemical equilibrium is favoured by the________________?

With increase in temperature, the equilibrium _______________ rises in case of endothermic reaction?

What is the unit of the rate constant in a chemical reaction in which 10% of the reactant decomposes in one hour, 20% in two hours, 30% in three hours and so on ?

Which of the following is an autocatalytic reaction ?

An isothermal irreversible reaction is being carried out in an ideal tubular flow reactor. The conversion in this case will ______________ with decrease in space time?

During manufacture of H2SO4, the oxidation of SO2 to SO3 by oxygen is an endothermic reaction. The yield of SO3 will be maximised, if the _____________________?

From Arrhenius law, a plot of loge K versus 1/T gives a straight line with a slope of (-E/R). The unit of E/R is___________________?

Pick out the wrong statement ?