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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.

Which of the following grinding mills has the horizontally arranged rods as the grinding elements thereby delivering more uniform granular products with minimum fines ?

A Compartment mill

B Rod mill

C Pebble mill

D Tube mill

Review Detailed Answer

Correct Answer: Rod mill

Angle of nip of the crushing rolls does not depend upon the_______________?

A Diameter of the rolls

B Speed of the rolls

C Product size

D Feed size

Review Detailed Answer

Correct Answer: Speed of the rolls

Height of liquid in agitation tank is normally maintained equal to the tank diameter. However, if the tank is too tall and a large liquid hold up is desired, then two or more impellers mounted on the same shaft may be used. The clearance between the tank bottom and the bottom most impeller should be about (where, D = impeller diameter) ?

A 0.5 D

B D

C 1.5 D

D 2 D

Review Detailed Answer

Correct Answer: D

Particle size range in which dust catcher (gravity settling chamber) works most effectively and efficiently is ______________ microns?

A < 5

B 10 to 25

C < 74

D > 1000

Review Detailed Answer

Correct Answer: < 74

Which of the following mechanical conveyors does not come under the division „carriers‟ ?

A Belt conveyor

B Bucket elevator

C Screw conveyor

D Apron conveyor

Review Detailed Answer

Correct Answer: Screw conveyor

Which of the following is not used as filter aid ?

A Asbestos

B Diatomaceous earth

C Purified wood cellulose

D Rice husk

Review Detailed Answer

Correct Answer: Rice husk

Work index is the gross energy (kWh/tonne of feed) necessary to reduce a very large feed to such a size that 80% of product particles will pass through a 0.1 mm screen. The value of work index determined for wet grinding should be multiplied with ______________ to get the same for dry grinding?

A 1.0

B 0.5

C 1.34

D 4.34

Review Detailed Answer

Correct Answer: 1.34

Which of the following is not used as a surface active agent in a flocculation operation ?

A Sodium silicate

B Quartz

C Lime

D Alumina

Review Detailed Answer

Correct Answer: Quartz

For transporting pasty material, one will use a/an__________________?

A Apron conveyor

B Belt conveyor

C Screw conveyor

D Bucket elevator

Review Detailed Answer

Correct Answer: Screw conveyor

Dispersion of a gas through liquid is done by using a__________________?

A Sparger

B Kneader

C Masticator

D None of these

Review Detailed Answer

Correct Answer: Sparger

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Which of the following grinding mills has the horizontally arranged rods as the grinding elements thereby delivering more uniform granular products with minimum fines ?

Angle of nip of the crushing rolls does not depend upon the_______________?

Particle size range in which dust catcher (gravity settling chamber) works most effectively and efficiently is ______________ microns?

Which of the following mechanical conveyors does not come under the division „carriers‟ ?

Which of the following is not used as filter aid ?

Work index is the gross energy (kWh/tonne of feed) necessary to reduce a very large feed to such a size that 80% of product particles will pass through a 0.1 mm screen. The value of work index determined for wet grinding should be multiplied with ______________ to get the same for dry grinding?

Which of the following is not used as a surface active agent in a flocculation operation ?

For transporting pasty material, one will use a/an__________________?

Dispersion of a gas through liquid is done by using a__________________?