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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Answer & Solution

Answer: Option A

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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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Answer & Solution

Answer: Option D

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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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Answer & Solution

Answer: Option D

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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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Answer & Solution

Answer: Option D

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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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Answer & Solution

Answer: Option D

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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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Answer & Solution

Answer: Option C

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7

Hydrocyclone is a

A) crusher B) wet classifier C) dry D) magnetic separator

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Answer & Solution

Answer: Option B

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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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Answer & Solution

Answer: Option C

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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.
Mineral Dressing in Metallurgy mcq question image

Mineral Dressing in Metallurgy mcq question image

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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Answer & Solution

Answer: Option A

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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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Answer & Solution

Answer: Option B

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Mineral Dressing in Metallurgy MCQ Questions and Answers | Metallurgical Engineering