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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.

_______________ is defined as the geometric mean of the relative rejections and the relative recoveries of two minerals?

A Separation efficiency

B Selectivity index

C Concentration ratio

D None of these

Review Detailed Answer

Correct Answer: Selectivity index

Size reduction of moulding powders, waxes, resins & gums are done in a _______________ mill?

A Cage

B Hammer

C Both A. & B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Both A. & B.

Ball mill is used for__________________?

A Crushing

B Coarse grinding

C Fine grinding

D Attrition

Review Detailed Answer

Correct Answer: Fine grinding

During washing of filter at the end of constant pressure filtration, the rate of washing equals the rate of filtration___________________?

A At time zero

B At the end of filtration

C When half the filtrate has been obtained

D At the end of filtration, but decreases with time subsequently

Review Detailed Answer

Correct Answer: At the end of filtration

Paddle agitator_________________?

A Is suitable for mixing low viscosity liquids

B Produces axial flow

C Moves at very high speed

D None of these

Review Detailed Answer

Correct Answer: Is suitable for mixing low viscosity liquids

Rittinger’s crushing law states that_____________________?

A Work required to form a particle of any size is proportional to the square of the surface to

B Work required to form a particle of a particular size is proportional to the square root of the

C Work required in crushing is proportional to the new surface created

D For a given machine and feed, crushing efficiency is dependent on the size of the feed &

Review Detailed Answer

Correct Answer: Work required in crushing is proportional to the new surface created

The opening of a 200 mesh screen (Taylor series) is__________________?

A 0.0074 cm

B 0.0074 mm

C 0.0047 cm

D 74 milli-microns

Review Detailed Answer

Correct Answer: 0.0074 cm

In case of a revolving mill, wet grinding compared to dry grinding__________________?

A Requires more energy

B Has less capacity

C Complicates handling & classification of the product

D None of these

Review Detailed Answer

Correct Answer: None of these

Which of the following is a continuous filter ?

A Plate and frame filter

B Cartridge filter

C Shell and leaf filter

D None of these

Review Detailed Answer

Correct Answer: None of these

The power number for a stirred tank becomes constant at high Reynolds number. In this limit, the variation of power input with impeller rotational speed (N) is proportional to___________________?

A N°

B N1

C N2

D N3

Review Detailed Answer

Correct Answer: N2

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

_______________ is defined as the geometric mean of the relative rejections and the relative recoveries of two minerals?

Size reduction of moulding powders, waxes, resins & gums are done in a _______________ mill?

Ball mill is used for__________________?

During washing of filter at the end of constant pressure filtration, the rate of washing equals the rate of filtration___________________?

Paddle agitator_________________?

Rittinger’s crushing law states that_____________________?

The opening of a 200 mesh screen (Taylor series) is__________________?

In case of a revolving mill, wet grinding compared to dry grinding__________________?

Which of the following is a continuous filter ?

The power number for a stirred tank becomes constant at high Reynolds number. In this limit, the variation of power input with impeller rotational speed (N) is proportional to___________________?