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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.

_____________ equation relates the thermal conductivity of a solid to its temperature ?

A Antoine

B Kopp’s

C Lee’s

D Kistyakowsky

Review Detailed Answer

Correct Answer: Lee’s

Unsteady state heat conduction occurs, when_______________?

A Temperature distribution is independent of time

B Temperature distribution is dependent on time

C Heat flows in one direction only

D Three dimensional heat flow is concerned

Review Detailed Answer

Correct Answer: Temperature distribution is dependent on time

For specified tube outside diameter, higher BWG means higher___________________?

A Tube thickness

B Cross-sectional area

C Weight per unit length

D None of these

Review Detailed Answer

Correct Answer: Cross-sectional area

A long iron rod initially at a temperature of 20°C has one end dipped in boiling water (100°C) at time, t = 0. The curved surface of the rod is insulated so that heat conduction is one dimensional in the axial direction. The temperature at a distance 100 mm from the dipped end becomes 40°C at time, t = 200 s. The same temperature is achieved at a distance of 200 mm from the dipped end at time ___________________?

A t = 283 s

B t = 356 s

C t = 400 s

D t = 800 s

Review Detailed Answer

Correct Answer: t = 800 s

Value of Prandtl number for water ranges from_________________?

A 1 to 2

B 5 to 10

C 100 to 500

D 1000 to 2000

Review Detailed Answer

Correct Answer: 5 to 10

For a fluid flowing in an annulus space, the wetted perimeter for heat transfer and pressure drop are__________________?

A Same

B Different

C Never different

D Linearly related

Review Detailed Answer

Correct Answer: Different

1000 kg of wet solids are to be dried from 60% to 20% moisture (by weight). The mass of moisture removed in kg is__________________?

A 520

B 200

C 400

D 500

Review Detailed Answer

Correct Answer: 400

Dropwise condensation occurs on ______________ surfaces?

A Clean and dirt free

B Smooth clean

C Contaminated cooling

D Polished

Review Detailed Answer

Correct Answer: Contaminated cooling

Conduction occurs in the buffer zone for a fluid flowing through a heated pipe, only when Prandtl number is________________?

A 0.1

B > 1

C < 1

D 1

Review Detailed Answer

Correct Answer: 0.1

The type of liquor circulation system to be ‘ employed in evaporators (viz. natural or forced circulation) is determined mainly by the ______________ of the liquid?

A Viscosity

B Density

C Thermal conductivity

D Corrosive nature

Review Detailed Answer

Correct Answer: Viscosity

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

_____________ equation relates the thermal conductivity of a solid to its temperature ?

Unsteady state heat conduction occurs, when_______________?

For specified tube outside diameter, higher BWG means higher___________________?

Value of Prandtl number for water ranges from_________________?

For a fluid flowing in an annulus space, the wetted perimeter for heat transfer and pressure drop are__________________?

1000 kg of wet solids are to be dried from 60% to 20% moisture (by weight). The mass of moisture removed in kg is__________________?

Dropwise condensation occurs on ______________ surfaces?

Conduction occurs in the buffer zone for a fluid flowing through a heated pipe, only when Prandtl number is________________?

The type of liquor circulation system to be ‘ employed in evaporators (viz. natural or forced circulation) is determined mainly by the ______________ of the liquid?