The reaction that does not take place in a blast furnace between 900 K to 1500 K temperature range during the extraction of iron is: 

1. CaO + SiO2 → CaSiO3 
2. Fe2O3 + CO → 2FeO + CO2 
3. FeO + CO → Fe +CO2 
4. C + CO2 → 2CO
Subtopic:  Metallurgy of individual elements |
From NCERT
NEET - 2023
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Read the following statement and choose the set of correct statements:
A. Chrome steel is used for cutting tools and crushing machines.
B. The fine dust of aluminium is used in paints and lacquers.
C. Copper is used for the reduction of alcohol.
D. Zinc dust is used as a reducing agent in the manufacturing of paints.
E. Iron is used for galvanising zinc. 
choose the most appropriate answer from the options given below:
1. (D) and (E) only
2. (A) and (D) only
3. (A), (B), and (D) only
4. (B), (C), and (D) only
Subtopic:  Metallurgy of individual elements |
From NCERT
NEET - 2023
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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 |
 70%
From NCERT
NEET - 2021
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In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with?

1. Iron(II) sulphide

2. Carbon monoxide

3. Copper(I) sulphide

4. Sulphur dioxide

Subtopic:  Metallurgy of individual elements |
 66%
From NCERT
NEET - 2015
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Aluminium is extracted from alumina Al2O3 by electrolysis of a molten mixture of:

1. Al2O3+HF+NaAlF4

2. Al2O3+CaF2+NaAlF4

3. Al2O3+Na3AlF6+CaF2

4. Al2O3+KF+Na3AlF6

Subtopic:  Intro - Flux, Leaching, Roasting & Calcination | Metallurgy of individual elements |
 78%
From NCERT
AIPMT - 2012
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In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with:

1. Copper(l) sulphide (Cu2S)

2. Sulphur dioxide (SO2)

3. Iron Sulphide (FeS)

4. Carbon monoxide (CO)

Subtopic:  Metallurgy of individual elements |
 81%
From NCERT
AIPMT - 2012
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Which of the following elements is present as an impurity to the maximum extent in the pig Iron?
1. Carbon
2. Silicon
3. Phosphorus
4. Manganese

Subtopic:  Intro - Flux, Leaching, Roasting & Calcination | Metallurgy of individual elements |
 81%
From NCERT
AIPMT - 2011
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A pair of metals that can be purified by van Arkel method is:

1. Zr and Ti

2. Ag and Au

3. Ni and Fe

4. Ga and In

Subtopic:  Metallurgy of individual elements | Refining Process |
 91%
From NCERT
AIPMT - 2011
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Maximum impurity in Pig iron is:

1. Mn
2. Phosphorous
3. Graphite
4. Sulphur

Subtopic:  Metallurgy of individual elements |
 70%
From NCERT
AIPMT - 1998
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