Extractive Metallurgy MCQ Questions and Answers | Metallurgical Engineering Page-4 section-1

31.
The major advantage of using flash roasters over multi hearth roasters is

A. a significant increase in production rate

B. a significant decrease in environmental pollution due to condensation of liquid sulfur

C. possibility of complete automation

D. no need for an additional fuel

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32.
Match the following metals in Group 1 with their production methods in Group 2.

Group 1 Group 2/strong>

P. Titanium 1. Mend's process

Q. Nickel 2. Pidgeon's process

R. Magnesium 3. Imperial smelting

S. Zinc 4. Kroll's process

5. Cynidation

A. P-5, Q-2, R-3, S-4

B. P-3, Q-5, R-4, S-2

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

D. P-4, Q-1, R-5, S-3

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33.
Which types of chemicals opposes the action of collector by rendering the mineral surface

A. Pulp

B. Frother

C. Collector

D. None of these

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34.
Cadmium in zinc leach liquor is removed by cementation using

A. zinc

B. iron

C. nickel

D. copper

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35.
Zn is commercially extracted from which of the following minerals?

A. Sphalerite

B. Magnetite

C. Chalcopyrite

D. Galena

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36.
What are the uses of Niobium

A. Niobium is used in alloys including stainless steel

B. MRI scanners and NMR equipment

C. It is used in superconducting magnets for particle accelerators

D. All are correct

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37.
Traditional copper converters are

A. side blown

B. top blown

C. bottom blown

D. both B and C

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38.
According to geological survey of India that India had a potential reserve of about . . . . . . . . million ton of bauxite which contain alumina of more than 50%.

A. 250

B. 150

C. 200

D. None of the these

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39.
Aluminium is not commercially produced by carbon-thermic reduction primarily, because

A. aluminium metal will have excessive dissolved oxygen

B. it melts at too Iow a temperature

C. it does not vaporise at reasonable temperature

D. Al-Al₂O₃ Iine is too low in the Ellingham diagram and needs excessively high temperature

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40.
Copper deposits are found in India at the following location:

A. Kudremukh

B. Kolar

C. Khetri

D. Ramagundam

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Group 1	Group 2/strong>
P. Titanium	1. Mend's process
Q. Nickel	2. Pidgeon's process
R. Magnesium	3. Imperial smelting
S. Zinc	4. Kroll's process
	5. Cynidation

Extractive Metallurgy MCQ Questions and Answers | Metallurgical Engineering

31. The major advantage of using flash roasters over multi hearth roasters is

Answer & Solution

32. Match the following metals in Group 1 with their production methods in Group 2. Group 1 Group 2/strong> P. Titanium 1. Mend's process Q. Nickel 2. Pidgeon's process R. Magnesium 3. Imperial smelting S. Zinc 4. Kroll's process 5. Cynidation

Answer & Solution

33. Which types of chemicals opposes the action of collector by rendering the mineral surface

Answer & Solution

34. Cadmium in zinc leach liquor is removed by cementation using

Answer & Solution

35. Zn is commercially extracted from which of the following minerals?

Answer & Solution

36. What are the uses of Niobium

Answer & Solution

37. Traditional copper converters are

Answer & Solution

38. According to geological survey of India that India had a potential reserve of about . . . . . . . . million ton of bauxite which contain alumina of more than 50%.

Answer & Solution

39. Aluminium is not commercially produced by carbon-thermic reduction primarily, because

Answer & Solution

40. Copper deposits are found in India at the following location:

Answer & Solution

31.
The major advantage of using flash roasters over multi hearth roasters is

32.
Match the following metals in Group 1 with their production methods in Group 2.

Group 1 Group 2/strong>

P. Titanium 1. Mend's process

Q. Nickel 2. Pidgeon's process

R. Magnesium 3. Imperial smelting

S. Zinc 4. Kroll's process

5. Cynidation

33.
Which types of chemicals opposes the action of collector by rendering the mineral surface

34.
Cadmium in zinc leach liquor is removed by cementation using

35.
Zn is commercially extracted from which of the following minerals?

36.
What are the uses of Niobium

37.
Traditional copper converters are

38.
According to geological survey of India that India had a potential reserve of about . . . . . . . . million ton of bauxite which contain alumina of more than 50%.

39.
Aluminium is not commercially produced by carbon-thermic reduction primarily, because

40.
Copper deposits are found in India at the following location: