MCQsDrive | MCQsDrive

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.

Space time equals the mean residence time__________________?

A When the density of the reaction mixture is constant

B For large diameter tubular reactor

C For narrow diameter tubular reactor

D For CSTR

Review Detailed Answer

Correct Answer: When the density of the reaction mixture is constant

Chemical reaction rate of a component depends upon the______________________?

A Composition of the component only

B Temperature of the system

C Pressure of the system

D All A., B. and C.

Review Detailed Answer

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

If helium is introduced in a reactor containing O2, SO2 and SO3 at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO3 (as per Le Chatelier’s principle)?

A Decreases

B Increases

C Remains unaltered

D Changes unpredictably

Review Detailed Answer

Correct Answer: Decreases

For a first order reaction carried out in a plug flow reactor, the space time is__________________?

A (1/k) ln C0/C

B (1/k) ln C/C0

C k ln C0/C

D k ln C/C0

Review Detailed Answer

Correct Answer: (1/k) ln C0/C

With increase in K2/K1 in case of a unimolecular type elementary reactions as shown in the bellow figure, the fractional yield of ‘R’ in mixed reactor (for a given conversion of ‘A’) ?

A Decreases

B Increases

C Increases linearly

D Remain same

Review Detailed Answer

Correct Answer: Decreases

A space time of 3 hours for a flow reactor means that___________________?

A The time required to process one reactor volume of feed (measured at specified conditions) is

B Three reactor volumes of feed can be processed every hour

C It takes three hours to dump the entire volume of the reactor with feed

D Conversion is cent per cent after three hours

Review Detailed Answer

Correct Answer: The time required to process one reactor volume of feed (measured at specified conditions) is

For a reaction of the type of bellow given figure, the rate of reaction (- rx) is given by___________________?

A (K1 + K1) CX

B (K1 + K2+K3) CX

C K1CV – K2CX

D (K1 – K2) CX

Review Detailed Answer

Correct Answer: K1CV – K2CX

Pick the WRONG design guideline for a reactor in which the reactions, A → R (desired) and A → S (undesired) are to take place. The ratio of the reaction rates is rR/rS = (k1/k2). CA a-b ?

A Use high pressure and eliminate inerts, when a > b

B Avoid recycle, when a > b

C Use batch reactor or plug flow reactor, when a > b

D Use CSTR with a high conversion, when a > b

Review Detailed Answer

Correct Answer: Avoid recycle, when a > b

Design of heterogamous catalytic reactor involves consideration of _______________ steps?

A Only chemical

B Only physical

C Both A. & B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Both A. & B.

Holding time for flow reactors is _______________ the space time, for constant fluid density ?

A Double

B Triple

C Equal to

D None of these

Review Detailed Answer

Correct Answer: Equal to

Showing 321 to 330 of 472 results

Contact Info

Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Space time equals the mean residence time__________________?

Chemical reaction rate of a component depends upon the______________________?

If helium is introduced in a reactor containing O2, SO2 and SO3 at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO3 (as per Le Chatelier’s principle)?

For a first order reaction carried out in a plug flow reactor, the space time is__________________?

With increase in K2/K1 in case of a unimolecular type elementary reactions as shown in the bellow figure, the fractional yield of ‘R’ in mixed reactor (for a given conversion of ‘A’) ?

A space time of 3 hours for a flow reactor means that___________________?

For a reaction of the type of bellow given figure, the rate of reaction (- rx) is given by___________________?

Pick the WRONG design guideline for a reactor in which the reactions, A → R (desired) and A → S (undesired) are to take place. The ratio of the reaction rates is rR/rS = (k1/k2). CA a-b ?

Design of heterogamous catalytic reactor involves consideration of _______________ steps?

Holding time for flow reactors is _______________ the space time, for constant fluid density ?