Mechanical Operations MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Mechanical Operations, a fundamental topic in the field of Basic Chemical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Mechanical Operations MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Mechanical Operations mcq questions that explore various aspects of Mechanical Operations problems. Each MCQ is crafted to challenge your understanding of Mechanical Operations principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Basic Chemical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Mechanical Operations MCQs are your pathway to success in mastering this essential Basic Chemical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Mechanical Operations. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Mechanical Operations knowledge to the test? Let's get started with our carefully curated MCQs!

Mechanical Operations MCQs | Page 36 of 46

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Q351.
In case of grinding in a ball mill

a.

wet grinding achieves a finer product size than dry grinding.

b.

its capacity decreases with increasing fineness of the products.

c.

grinding cost and power requirement increases with increasing fineness of the products.

d.

all (a), (b) and (c).

Discuss
Answer: (d).all (a), (b) and (c).
Q352.
The capacity of a classifier in 'tons of solid/hr' is given by (where, A = cross-sectional area, m² V = rising velocity of fluid, m/sec.S = percentage of solids in the suspension by volume.ฯ = density of solids, kg/m³)

a.

3.6 AVS.ฯ

b.

3.6 A.V.ฯ

c.

3.6 A.S. ฯ

d.

3.6 AVS/ฯ

Discuss
Answer: (a).3.6 AVS.ฯ
Q353.
Sizing of very fine particles of the order of 5 to 10 microns is done by elutriation, which is a __________ operation.

a.

clarification

b.

sedimentation

c.

flocculation

d.

classification

Discuss
Answer: (d).classification
Q354.
In the cyclone separator used for separation of dust from dust laden gas, the gas

a.

enters the cyclone from the top.

b.

is admitted tangentially at high velocity.

c.

develops a helical motion inside the chamber.

d.

both (b) and (c).

Discuss
Answer: (d).both (b) and (c).
Q355.
Size reduction of fibrous materials like wood, asbestos, mica etc. is done by a disintegrator exemplified by the

a.

Blake jaw crusher

b.

cage mill

c.

stamp mill

d.

Bradford's breaker

Discuss
Answer: (b).cage mill
Q356.
The material is crushed in a gyratory crusher by the action of

a.

impact

b.

compression

c.

attrition

d.

cutting

Discuss
Answer: (b).compression
Q357.
Cartridge filters are termed as 'edge' filters, because of the fact that the

a.

disks have very sharp edge.

b.

solids are not deposited at the edge of the disk.

c.

bulk of the solids are removed at the periphery of the disks.

d.

none of these.

Discuss
Answer: (c).bulk of the solids are removed at the periphery of the disks.
Q358.
Vibrating screens have capacity in the range of __________ tons/ft² .mm mesh size.

a.

0.2 to 0.8

b.

5 to 25

c.

50 to 100

d.

100 to 250

Discuss
Answer: (a).0.2 to 0.8
Q359.
Cumulative analysis for determining surface is more precise than differential analysis, because of the

a.

assumption that all particles in a single fraction are equal in size.

b.

fact that screening is more effective.

c.

assumption that all particles in a single fraction are equal in size, is not needed.

d.

none of these.

Discuss
Answer: (c).assumption that all particles in a single fraction are equal in size, is not needed.
Q360.
To remove very small amount of tiny solid impurities from liquid, we use a

a.

pressure filter

b.

vacuum filter

c.

centrifugal filter

d.

coagulant

Discuss
Answer: (d).coagulant
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