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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.

Water is normally used as a coolant in the heat exchange equipments mainly because of its___________________?

A Abundance & high heat capacity

B Low density

C Low viscosity

D High fluidity

Review Detailed Answer

Correct Answer: Abundance & high heat capacity

Stefan-Boltzmann law applies to _____________ body?

A Black

B White

C Grey

D Any colour

Review Detailed Answer

Correct Answer: Black

A BTU/hr.ft.2 °F is equal to_________________?

A 1 kcal/hr. m2°C

B 4.88 kcal/hr. m.2°C

C 1 kcal/hr. m2.°K

D None of these

Review Detailed Answer

Correct Answer: 4.88 kcal/hr. m.2°C

A _____________ evaporator employs an annular downtake?

A Basket type

B Horizontal

C Long tube vertical

D None of these

Review Detailed Answer

Correct Answer: Basket type

With increase in temperature, the thermal conductivity of fresh lubricating oil ___________________?

A Increases

B Decreases

C Remains unchanged

D May increase or decrease; depends on its composition

Review Detailed Answer

Correct Answer: Decreases

To reduce the tube side pressure drop for the same flow rate, the heat exchanger recommended is _______________?

A 1-2 heat exchanger

B 1-1 heat exchanger

C 3-2 heat exchanger

D 2-4 heat exchanger

Review Detailed Answer

Correct Answer: 1-1 heat exchanger

In case of _______________ boiling, the liquid temperature is below the saturation temperature and the boiling takes place in the vicinity of the heated surface?

A Nucleate

B Local

C Pool

D Saturated

Review Detailed Answer

Correct Answer: Local

For _______________ Prandtl number values, the heat conduction will be negligible in the buffer zone?

A Extremely low

B Low

C High

D No

Review Detailed Answer

Correct Answer: High

Terminal point temperature differences between fluids in case of a heat exchanger is termed as__________________?

A Approach

B Log mean temperature difference

C Arithmetic mean temperature difference

D Geometric mean temperature difference

Review Detailed Answer

Correct Answer: Approach

A composite wall consists of two plates A and B placed in series normal to the flow of heat. The thermal conductivities are kA and kB and the specific heat capacities are CPA and CPB for plates A and B respectively. Plate B has twice the thickness of plate A. At steady state, the temperature difference across plate A is greater than that across plate B, when_________________?

A CPA > CPB

B CPA < CPB

C kA < 0.5 kB

D kA >2 kB

Review Detailed Answer

Correct Answer: kA < 0.5 kB

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Water is normally used as a coolant in the heat exchange equipments mainly because of its___________________?

Stefan-Boltzmann law applies to _____________ body?

A BTU/hr.ft.2 °F is equal to_________________?

A _____________ evaporator employs an annular downtake?

With increase in temperature, the thermal conductivity of fresh lubricating oil ___________________?

To reduce the tube side pressure drop for the same flow rate, the heat exchanger recommended is _______________?

In case of _______________ boiling, the liquid temperature is below the saturation temperature and the boiling takes place in the vicinity of the heated surface?

For _______________ Prandtl number values, the heat conduction will be negligible in the buffer zone?

Terminal point temperature differences between fluids in case of a heat exchanger is termed as__________________?