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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.

The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge) ?

A x1.5

B x0.8

C x-1.5

D x-0.8

Review Detailed Answer

Correct Answer: x0.8

Production of one ton of paper in Indian paper industry consumes about ____________ kWh of electricity ?

A 300

B 800

C 1400

D 2000

Review Detailed Answer

Correct Answer: 1400

A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness ______________ metre?

A 0.01

B 0.1

C 0.25

D 0.5

Review Detailed Answer

Correct Answer: 0.1

For grinding of softer materials, the grinding wheel should have _________________ grain size ?

A Finer

B Coarser

C Medium

D Any type of

Review Detailed Answer

Correct Answer: Coarser

Consider an ideal solution of components A and B. The entropy of mixing per mole of an alloy containing 50% B is_______________?

A R ln 2

B -R ln 2

C 3 R ln 2

D -3R ln 2

Review Detailed Answer

Correct Answer: R ln 2

In case of compression of one kg of air, the work done will be the least, when the value of polytropic index ‘n’ is______________________?

A 1

B 1.4

C 1.5

D Y = Cp/Cv

Review Detailed Answer

Correct Answer: 1

The pressure drop per unit length for laminar flow of fluid through a long pipe is proportional to (where, A = cross-sectional area of the pipe & D = Diameter of the pipe) ?

A A

B D

C 1/A

D 1/A2

Review Detailed Answer

Correct Answer: A

Corrosion rate cannot be lowered by reducing the ________________ of the corroding medium?

A Concentration

B Velocity

C Temperature

D None of these

Review Detailed Answer

Correct Answer: Concentration

The life of a ball bearing is inversely proportional to________________?

A (Load)1

B (Load)2

C (Load)3

D (Load)0.33

Review Detailed Answer

Correct Answer: (Load)3

The condition of diffraction from a crystal is given by______________?

A nλ = 2d Sin θ

B λ = d Sin 2θ

C λ = 2d Sin 2θ

D nλ = d Sin θ

Review Detailed Answer

Correct Answer: nλ = 2d Sin θ

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge) ?

Production of one ton of paper in Indian paper industry consumes about ____________ kWh of electricity ?

A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness ______________ metre?

For grinding of softer materials, the grinding wheel should have _________________ grain size ?

Consider an ideal solution of components A and B. The entropy of mixing per mole of an alloy containing 50% B is_______________?

In case of compression of one kg of air, the work done will be the least, when the value of polytropic index ‘n’ is______________________?

The pressure drop per unit length for laminar flow of fluid through a long pipe is proportional to (where, A = cross-sectional area of the pipe & D = Diameter of the pipe) ?

Corrosion rate cannot be lowered by reducing the ________________ of the corroding medium?

The life of a ball bearing is inversely proportional to________________?

The condition of diffraction from a crystal is given by______________?