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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.

Low thermal conductivity of heat insulating materials is due to its_________________?

A Dense structure

B High proportion of air space

C High specific heat

D None of these

Review Detailed Answer

Correct Answer: High proportion of air space

Low thermal conductivity of heat insulating materials is due to its_______________?

A Dense structure

B High proportion of air space

C High specific heat

D None of these

Review Detailed Answer

Correct Answer: High proportion of air space

In case of a vertical tube evaporator, with increase in the liquor level, the___________________?

A Capacity of the evaporator is decreased

B Capacity of the evaporator is increased

C True temperature drop increases

D Both B. and C.

Review Detailed Answer

Correct Answer: Capacity of the evaporator is decreased

The rate of heat transfer is a product of overall heat transfer co-efficient, the difference in temperature and the___________________?

A Heating volume

B Heat transfer area

C Nusselt number

D None of these

Review Detailed Answer

Correct Answer: Heat transfer area

Thermal diffusivity is given by__________________?

A k/ρCp

B ρCp/k

C μCp/a

D μ/hCp

Review Detailed Answer

Correct Answer: k/ρCp

In a forward feed multiple effect, the pressure build up will be____________________?

A Least at the inlet of the first effect

B Least at the outlet of the last effect

C Highest at the inlet of the last effect

D Highest at the outlet of the last effect

Review Detailed Answer

Correct Answer: Least at the outlet of the last effect

Which of the following has the minimum absorptivity ?

A Aluminium foil

B Coal dust

C Refractory bricks

D Iron plates

Review Detailed Answer

Correct Answer: Aluminium foil

Convective heat transfer, in which heat is transferred by movement of warmed matter is described by___________________?

A Fourier’s law

B Newton’s law of cooling

C Fick’s law

D None of these

Review Detailed Answer

Correct Answer: Newton’s law of cooling

If h1 = inner film co-efficient and /h2 = outer film co-efficient, then the overall heat transfer co-efficient is________________?

A Always less than h1

B Always between h1 and h2

C Always higher than h2

D Dependent on metal resistance

Review Detailed Answer

Correct Answer: Always between h1 and h2

In an extended surface heat exchanger, fluid having lower co-efficient________________?

A Flows through the tube

B Flows outside the tubes

C Can flow either inside or outside the tubes

D Should not be used as it gives very high pressure drop

Review Detailed Answer

Correct Answer: Flows outside the tubes

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Low thermal conductivity of heat insulating materials is due to its_________________?

Low thermal conductivity of heat insulating materials is due to its_______________?

In case of a vertical tube evaporator, with increase in the liquor level, the___________________?

The rate of heat transfer is a product of overall heat transfer co-efficient, the difference in temperature and the___________________?

Thermal diffusivity is given by__________________?

In a forward feed multiple effect, the pressure build up will be____________________?

Which of the following has the minimum absorptivity ?

Convective heat transfer, in which heat is transferred by movement of warmed matter is described by___________________?

If h1 = inner film co-efficient and /h2 = outer film co-efficient, then the overall heat transfer co-efficient is________________?

In an extended surface heat exchanger, fluid having lower co-efficient________________?