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Q. No.Match the following in column I with column II and choose the correct combination:
1. (A – 1); (B – 3); (C – 4); (D – 2)
2. (A – 2); (B – 3); (C – 4); (D – 1)
3. (A – 3); (B – 2); (C – 1); (D – 4)
4. (A – 2); (D – 4); (C – 1); (D – 3)
| Column I | Column II | ||
| (A) | Aluminium | 1. | Electrolysis |
| (B) | Iron | 2. | Reverberatory Furnace |
| (C) | Silicon | 3. | Blast furnace |
| (D) | Copper | 4. | Zone refining |
1. (A – 1); (B – 3); (C – 4); (D – 2)
2. (A – 2); (B – 3); (C – 4); (D – 1)
3. (A – 3); (B – 2); (C – 1); (D – 4)
4. (A – 2); (D – 4); (C – 1); (D – 3)
Subtopic: Â Metallurgy of individual elements |
Level 4: Below 35%
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The role of \(SiO_2 \) in Cu extraction is:
1. Converts FeO to \(FeSiO_3 \)
2. Converts CaO to \(CaSiO_3 \)
3. Reduces \(Cu_2S \) to Cu
4. None of these
1. Converts FeO to \(FeSiO_3 \)
2. Converts CaO to \(CaSiO_3 \)
3. Reduces \(Cu_2S \) to Cu
4. None of these
Subtopic: Â Metallurgy of individual elements |
Level 4: Below 35%
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Match column-I with column-II and select the correct option:
| Column I | Column II |
| (i) Gold (Au) | (a) SO2 |
| (ii) Blister Copper | (b) NaOH |
| (iii) Al2O3 | (c) NaCN |
| (iv) Froth stabilizer | (d) Aniline |
| I | II | III | IV | |
| 1. | c | a | b | d |
| 2. | a | b | c | d |
| 3. | b | c | d | a |
| 4. | c | b | a | d |
Subtopic: Â Intro - Flux, Leaching, Roasting & Calcination |Â Metallurgy of individual elements |
 89%
Level 1: 80%+
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In the extraction of copper, the following reaction takes place, \(FeO+SiO_2\rightarrow FeSiO_3 \)
In the above reaction, \(FeO \) and \(FeSiO_3 \) act as a/an respectively:
1. Flux, Slag
2. Slag, Flux
3. Gangue, Slag
4. Slag, Flux
In the above reaction, \(FeO \) and \(FeSiO_3 \) act as a/an respectively:
1. Flux, Slag
2. Slag, Flux
3. Gangue, Slag
4. Slag, Flux
Subtopic: Â Metallurgy of individual elements |
 52%
Level 3: 35%-60%
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Cast iron is used for the manufacture of :
1. Wrought iron and pig iron
2. Wrought iron and steel
3. Wrought iron, pig iron and steel
4. Pig iron, scrap iron and steel
Subtopic: Â Metallurgy of individual elements |
 65%
Level 2: 60%+
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Among statements (I) – (IV), the correct ones are-
| (I) | Limestone is decomposed to CaO during the extraction of iron from its oxides |
| (II) | In the extraction of silver, silver is extracted as an anionic complex |
| (III) | Nickel is purified by Mond's process |
| (IV) | Zr and Ti are purified by the Van Arkel method |
1. (III) and (IV) only
2. (I), (III), and (IV) only
3. (II), (III), and (IV) only
4. (I), (II), (III), and (IV)
Subtopic: Â Metallurgy of individual elements |Â Refining Process |
 64%
Level 2: 60%+
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During the process of electrolytic refining of copper, some metals present as impurities settle as 'anode mud'. These are:
1. Fe and Ni
2. Ag and Au
3. Pb and Zn
4. Si and Ag
Subtopic: Â Metallurgy of individual elements |
 88%
Level 1: 80%+
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