Match List-I with List-II
List- I (ores)  List- II (Composition)
(a) Haematite (i) \(Fe_3O_4\)
(b) Magnetite  (ii) \(ZnCO_3\)
(c) Calamine  (iii) \(Fe_2O_3\)
(d) Kaolinite (iv) \([Al_2(OH)_4Si_2O_5]\)
Choose the correct answer from the options given below:
(a) (b) (c) (d)
1. (i) (iii) (ii) (iv)
2. (i) (ii) (iii) (iv)
3. (iii) (i) (ii) (iv)
4. (iii) (i) (iv) (ii)
Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
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Given below are two statements:

I: The Ellingham diagram provides an idea about the feasibility of a reaction
II: The Ellingham diagram explains the rate of the reduction reactions

In the light of the above statements, choose the most appropriate answer from the options given below: 

1. I is correct and II is incorrect
2. I is incorrect and II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic:  Ellingham Diagram |
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Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature?
1. Distillation
2. Zone refining
3. Electrolysis
4. Chromatography

Subtopic:  Refining Process |
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The maximum temperature that can be achieved in blast furnace is :

1. Upto 1900 K

2. Upto 5000 K

3. Upto 1200 K

4. Upto 2200 K

Subtopic:  Metallurgy of individual elements |
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The correct statement among the following is:

1. Blister copper has a blistered appearance due to the evolution of CO2.
2. Vapour phase refining is carried out for nickel by the Van Arkel method.
3. Pig iron can be moulded into a variety of shapes.
4. Wrought iron is impure iron with 4 % carbon.

Subtopic:  Refining Process |
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Which one is a malachite from the following?

1. CuCO3.Cu(OH)2

2. CuFeS2

3. Cu(OH)2

4. Fe3O4

Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
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Identify the incorrect statement:

1. The scientific and technological process used for isolation of the metal from its ore is known as metallurgy
2. Minerals are naturally occurring chemical substances in the earth's crust
3. Ores are minerals that may contain a metal
4. Gangue is an ore contaminated with undesired materials
Subtopic:  Intro - Flux, Leaching, Roasting & Calcination |
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Considering Ellingham diagram, which of the following metals can be used to reduce alumina?

1. Fe

2. Zn

3. Mg

4. Cu

Subtopic:  Ellingham Diagram |
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Extraction of gold and silver involves leaching with CN- ion. Silver is later recovered by

(1) liquation

(2) distillation

(3) zone refining

(4) displacement with Zn

 

 

Subtopic:  Intro - Flux, Leaching, Roasting & Calcination | Metallurgy of individual elements |
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Match items of Column I with the items of Column II and assign the correct code.
        Column l                                                                    Column II
A. Cyanide process                                                            1. Ultrapure Ge
B. Froth floatation process                                                 2. Dressing of ZnS
C. Electrolytic reduction                                                      3. Extraction of Al
D. Zone refining                                                                  4. Extraction of Au
                                                                                            5. Purification of Ni
Codes
      A  B  C  D
(a)  2  3  1  5
(b)  1  2  3  4
(c)  3  4  5  1
(d)  4  2  3  1

Subtopic:  Intro - Flux, Leaching, Roasting & Calcination | Refining Process |
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