Mineral Dressing in Metallurgy MCQ Questions and Answers

1.
Separation of particles of various sizes, shapes & densities by allowing them to settle in a fluid is called

A. classification

B. froth floatation

C. Thickening

D. none of these

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2.
During filtration operation, the filtrate encounters the resistance of the

A. filter medium

B. cake

C. channel carrying the slurry to then upstream side of the cake and filtrate away from the filter medium

D. all A, B and C

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3.
Match the following:

Group 1 Group 2

P. Floatation 1. Separation on the basis of density difference

Q. Electrostatic concentration 2. Reduction in size

R. Comminution 3. Surface charge is induced in particles

S. Heavy media separation 4. Modification of surface tension

A. P-2, Q-1, R-4, S-3

B. P-1, Q-2, R-3, S-4

C. P-3, Q-4, R-1, S-2

D. P-4, Q-3, R-2, S-1

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4.
The capacity of a pneumatic conveying system depends upon the

A. bulk density of materials

B. pressure of the conveying air

C. diameter of the conveying line

D. all A, B and C

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5.
The energy consumed by a ball mill depends upon

A. its speed

B. its ball load

C. the density of the material being ground

D. all A, B and C

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6.
Equivalent diameter of a particle is the diameter of the sphere having the same as the actual particle.

A. ratio of surface to volume

B. ratio of volume to surface

C. volume

D. surface

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7.
Hydrocyclone is a

A. crusher

B. wet classifier

C. dry

D. magnetic separator

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8.
In the floatation process, pine oil is used as

A. collector

B. activator

C. frother

D. depressant

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9.
The figure below shows a schematic of a water droplet placed on the surfaces of two mineral P and Q.

Given this information, pick the correct statement from the following:

A. Mineral P ascends with air bubbles preferentially over mineral Q

B. Mineral Q ascends with air bubbles preferentially over mineral P

C. Both minerals P and Q ascend with the air bubbles without preference

D. Both minerals P and Q sink to the bottom

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10.
Which is a secondary crusher for a hard & tough stone?

A. jaw crusher

B. cone crusher

C. impact crusher

D. toothed roll crusher

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Group 1	Group 2
P. Floatation	1. Separation on the basis of density difference
Q. Electrostatic concentration	2. Reduction in size
R. Comminution	3. Surface charge is induced in particles
S. Heavy media separation	4. Modification of surface tension

Mineral Dressing in Metallurgy MCQ Questions and Answers | Metallurgical Engineering

1. Separation of particles of various sizes, shapes & densities by allowing them to settle in a fluid is called

Answer & Solution

2. During filtration operation, the filtrate encounters the resistance of the

Answer & Solution

3. Match the following: Group 1 Group 2 P. Floatation 1. Separation on the basis of density difference Q. Electrostatic concentration 2. Reduction in size R. Comminution 3. Surface charge is induced in particles S. Heavy media separation 4. Modification of surface tension

Answer & Solution

4. The capacity of a pneumatic conveying system depends upon the

Answer & Solution

5. The energy consumed by a ball mill depends upon

Answer & Solution

6. Equivalent diameter of a particle is the diameter of the sphere having the same as the actual particle.

Answer & Solution

7. Hydrocyclone is a

Answer & Solution

8. In the floatation process, pine oil is used as

Answer & Solution

9. The figure below shows a schematic of a water droplet placed on the surfaces of two mineral P and Q. Given this information, pick the correct statement from the following:

Answer & Solution

10. Which is a secondary crusher for a hard & tough stone?

Answer & Solution

1.
Separation of particles of various sizes, shapes & densities by allowing them to settle in a fluid is called

2.
During filtration operation, the filtrate encounters the resistance of the

3.
Match the following:

Group 1 Group 2

P. Floatation 1. Separation on the basis of density difference

Q. Electrostatic concentration 2. Reduction in size

R. Comminution 3. Surface charge is induced in particles

S. Heavy media separation 4. Modification of surface tension

4.
The capacity of a pneumatic conveying system depends upon the

5.
The energy consumed by a ball mill depends upon

6.
Equivalent diameter of a particle is the diameter of the sphere having the same as the actual particle.

7.
Hydrocyclone is a

8.
In the floatation process, pine oil is used as

9.
The figure below shows a schematic of a water droplet placed on the surfaces of two mineral P and Q.

Given this information, pick the correct statement from the following:

10.
Which is a secondary crusher for a hard & tough stone?