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 22 of 46

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Q211.
There is practically no alternative/competitor to __________ in the beneficiation treatment of sulphide ores.

a.

classification

b.

tabling

c.

jigging

d.

froth floatation

Discuss
Answer: (d).froth floatation
Q212.
Separation of isotopes is generally done using a/an __________ centrifuge.

a.

ultra

b.

disk-bowl

c.

both (a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (a).ultra
Q213.
Temperature of the product during ultrafine grinding

a.

increases

b.

decreases

c.

remains constant

d.

may increase or decrease ; depends on the material being ground

Discuss
Answer: (a).increases
Q214.
Reciprocating screens are normally inclined at an angle of 5° with the horizontal and employ gyratory motion at feed end & reciprocating motion at the discharge end. They are not suitable for the screening of the

a.

light metal powder down upto 4 mesh size.

b.

dry chemicals.

c.

heavy tonnages of rocks or gravel.

d.

powdered food & granular materials.

Discuss
Answer: (c).heavy tonnages of rocks or gravel.
Q215.
Width and speed of a conveyor belt depends upon the __________ of the material.

a.

lump size

b.

bulk density

c.

both (a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) & (b)
Q216.
Higher is the mesh number, smaller will be the aperture size of the screen. It means that the aperture size of a 200 mesh screen will be smaller than that of 20 mesh screen. This is valid for

a.

British standard screens.

b.

German standard screens (DIN 1171) etc.

c.

American standard screens (ASTM and Tyler standard screens).

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q217.
Pick out the wrong statement.

a.

Cummulative analysis for determining surface area is preferred over differential analysis, because of the assumption that "all particles in a simple fraction equal in size" is not needed for cummulative anslysis unlike differential anlaysis.

b.

A gate diagram is a plot of cummulative percent by weight undersize vs. the reciprocal of diameter, in which the area beneath the curve represents the surface.

c.

Capacity of crusher in choke feeding is increased.

d.

Rolling of pebbles/balls from top to bottom of the heap in tumbling mills is called 'cascading and throwing of the balls through the air to the toe of the heap is called 'cataracting'.

Discuss
Answer: (c).Capacity of crusher in choke feeding is increased.
Q218.
Which of the following size reduction equipments employs mainly attrition for ultrafine grinding ?

a.

Jet mills

b.

Fluid energy mill

c.

Micronizer

d.

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

Discuss
Answer: (d).all (a), (b) and (c)
Q219.
Tank filter (e.g., Nutsch filter) is

a.

a high pressure filter.

b.

a continuous filter.

c.

used for small scale filtration work.

d.

a leaf filter.

Discuss
Answer: (c).used for small scale filtration work.
Q220.
Which of the following gives the crushing energy required to create new surface ?

a.

Taggarts rule

b.

Fick's law

c.

Rittinger's law

d.

none of these

Discuss
Answer: (c).Rittinger's law
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