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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.

Conductance is given by (where, x = thickness, A = heat flow area, K = thermal conductivity.)?

A x/KA

B KA/x

C K/Ax

D A/Kx

Review Detailed Answer

Correct Answer: KA/x

LMTD can’t be used as such without a correction factor for the_________________?

A Multipass heat exchanger

B Baffled heat exchanger

C Condensation of mixed vapour in a condenser

D All A. B. and C.

Review Detailed Answer

Correct Answer: All A. B. and C.

Heat sensitive materials can be concentrated in an evaporator employing_______________?

A Vacuum

B High pressure

C High residence time

D None of these

Review Detailed Answer

Correct Answer: Vacuum

For what value of Prandtl number, St = f/2 ?

A 1.5

B 1

C > 1

D < 1

Review Detailed Answer

Correct Answer: 1

In a heat exchanger, the rate of heat transfer from the hot fluid to the cold fluid___________________?

A Varies directly as the area and the LMTD

B Directly proportional to LMTD and inversely proportional to the area

C Varies as square of the area

D None of these

Review Detailed Answer

Correct Answer: Varies directly as the area and the LMTD

Grashoff number is given by________________?

A gD3.β.Δtρ2/μ2

B gD2βΔtρ/μ2

C gD2βΔtP2μ

D gD3βΔtP2/μ

Review Detailed Answer

Correct Answer: gD3.β.Δtρ2/μ2

If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface temperature follows _____________ law?

A Parabolic

B Hyperbolic

C Linear

D Logarithmic

Review Detailed Answer

Correct Answer: Parabolic

Which of the following is the most widely used heat insulating material for pipelines carrying steam ?

A Tar dolomite bricks followed by asbestos

B Fireclay refractory followed by aluminium sheet

C Cotton followed by aluminium foil

D 85% magnesia cement and glass wool

Review Detailed Answer

Correct Answer: 85% magnesia cement and glass wool

Evaporator tubes are generally_____________________?

A Horizontal

B Vertical

C Inclined

D Random

Review Detailed Answer

Correct Answer: Vertical

In case of parallel flow heat exchanger, the lowest temperature theoretically attainable by the hot fluid is _____________ the outlet temperature of the cold fluid?

A Equal to

B More than

C Less than

D Either more or less than (depending upon the fluid)

Review Detailed Answer

Correct Answer: Equal to

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Conductance is given by (where, x = thickness, A = heat flow area, K = thermal conductivity.)?

LMTD can’t be used as such without a correction factor for the_________________?

Heat sensitive materials can be concentrated in an evaporator employing_______________?

For what value of Prandtl number, St = f/2 ?

In a heat exchanger, the rate of heat transfer from the hot fluid to the cold fluid___________________?

Grashoff number is given by________________?

If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface temperature follows _____________ law?

Which of the following is the most widely used heat insulating material for pipelines carrying steam ?

Evaporator tubes are generally_____________________?

In case of parallel flow heat exchanger, the lowest temperature theoretically attainable by the hot fluid is _____________ the outlet temperature of the cold fluid?