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 43 of 46

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Q421.
Stamp mills are generally used for crushing

a.

iron ores

b.

gold ores

c.

talc

d.

diamond

Discuss
Answer: (b).gold ores
Q422.
Size reduction of ice and gypsum can be accomplished suitably by a __________ crusher.

a.

Blake jaw

b.

toothed roll

c.

gyratory

d.

none of these.

Discuss
Answer: (b).toothed roll
Q423.
A filter press is

a.

a batch filter.

b.

not suitable, if the liquid is the main product.

c.

having prohibitively high maintenance cost.

d.

not suitable for wide range of materials under varying operating conditions of cake thickness and pressure.

Discuss
Answer: (a).a batch filter.
Q424.
Xanthates are used in the froth floatation process as a/an

a.

conditioner

b.

frother

c.

collector

d.

activator

Discuss
Answer: (c).collector
Q425.
The ratio of the actual mesh dimension of Taylor series to that of the next smaller screen is

a.

2

b.

√2

c.

1.5

d.

√3

Discuss
Answer: (b).√2
Q426.
A propeller agitator

a.

produces mainly axial flow.

b.

is used for mixing high viscosity pastes.

c.

runs at very slow speed (2 rpm).

d.

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

Discuss
Answer: (a).produces mainly axial flow.
Q427.
In a grinding operation, the limiting particle size is the size of the __________ particle in the sample.

a.

smallest

b.

largest

c.

either (a) or (b)

d.

neither (a) nor (b)

Discuss
Answer: (d).neither (a) nor (b)
Q428.
Screen capacity is proportional to (where, S = screen aperture)

a.

S

b.

1/S

c.

S²

d.

√S

Discuss
Answer: (a).S
Q429.
In coal washeries, three products namely the valuable product (i.e. clean/washed coal), discarded product (i.e. mineral matter) and an additional concentrated product called __________ is produced.

a.

concentrate

b.

tailing

c.

middling

d.

none of these.

Discuss
Answer: (c).middling
Q430.
Actual operating speed of a ball mill may vary from 65 to 80% of the critical speed. Which of the following duties would require the ball mill to be operated at maximum percentage of critical speed ?

a.

Wet grinding in low viscous suspension.

b.

Wet grinding in high viscous suspension.

c.

Dry grinding of large particles (upto 1.25 cms).

d.

Dry grindng of large particles in un-baffed mills.

Discuss
Answer: (d).Dry grindng of large particles in un-baffed mills.
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