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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.

In a multipass shell and tube heat exchanger, tube side return pressure loss is equal to _____________ the velocity head?

A Twice

B Four times

C Square root of

D Square of

Review Detailed Answer

Correct Answer: Four times

Heat produced when a steady state current, I passes through an electrical conductor having resistance, ‘R’ is___________________?

A IR

B I2R

C IR2

D I2R2

Review Detailed Answer

Correct Answer: I2R

The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by__________________?

A Painting the surface black

B Painting the surface white (with aluminium paint)

C Giving the surface a mirror finish

D Roughening the surface

Review Detailed Answer

Correct Answer: Painting the surface white (with aluminium paint)

Fourier’s law applies to the heat transfer by__________________?

A Convection

B Radiation

C Conduction

D All A., B. & C.

Review Detailed Answer

Correct Answer: Conduction

As per Kirchoff‟s law, the ratio of the total radiating power to the absorptivity of a body depends on the_______________?

A Temperature of the body only

B Wavelength of monochromatic radiation

C Both A. and B.

D Nature of material of body

Review Detailed Answer

Correct Answer: Temperature of the body only

A hot body will radiate heat most rapidly, if its surface is___________________?

A White & rough

B Black & rough

C White & polished

D Black & polished

Review Detailed Answer

Correct Answer: Black & rough

Prandtl number is the ratio of________________?

A Mass diffusivity to thermal diffusivity

B Momentum diffusivity to thermal diffusivity

C Thermal diffusivity to mass diffusivity

D Thermal diffusivity to momentum diffusivity

Review Detailed Answer

Correct Answer: Momentum diffusivity to thermal diffusivity

Rate of heat transfer by vaporisation from pools of water is affected by the ____________________?

A Nature of heating surface and distribution of bubbles

B Surface tension of water

C Viscosity of water

D All A., B. and C.

Review Detailed Answer

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

The purpose of providing bleed points in the evaporator is to__________________?

A Admit the feed

B Remove the product

C Facilitate removal of non-condensable gases

D Create vacuum

Review Detailed Answer

Correct Answer: Facilitate removal of non-condensable gases

With increase in temperature, the thermal conductivity of steel___________________?

A Increases

B Decreases

C Remains unchanged

D Increases exponentially

Review Detailed Answer

Correct Answer: Decreases

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

In a multipass shell and tube heat exchanger, tube side return pressure loss is equal to _____________ the velocity head?

Heat produced when a steady state current, I passes through an electrical conductor having resistance, ‘R’ is___________________?

The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by__________________?

Fourier’s law applies to the heat transfer by__________________?

As per Kirchoff‟s law, the ratio of the total radiating power to the absorptivity of a body depends on the_______________?

A hot body will radiate heat most rapidly, if its surface is___________________?

Prandtl number is the ratio of________________?

Rate of heat transfer by vaporisation from pools of water is affected by the ____________________?

The purpose of providing bleed points in the evaporator is to__________________?

With increase in temperature, the thermal conductivity of steel___________________?