EASY

Earn 100

Define the term.

Slag.

Important Questions on General Principles and Processes of Isolation of Metals (Metallurgy)

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

The most common method, used for extraction of metals from oxide ores involves

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

During the extraction of copper, the impurity

(FeS)

is removed as slag by mixing the contaminated copper ore with silica and coke. The molecular formula of slag is

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

Which of the following statements is correct during the extraction of copper?

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

Cast iron is used for the manufacture of :

MEDIUM

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

What is flux? Give one example of each of an acidic flux and a basic flux.

MEDIUM

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

The form of iron obtained from blast furnace is :

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

Which of the following reduction reaction CANNOT be carried out with coke?

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

Which among the following reactions occurs at zone of slag formation in the process of extraction of iron by blast furnace?

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

Which of the following metals cannot be obtained by auto-reduction of their compounds?

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

Which among following processes occurs at

1500 K

in blast furnace for extraction of iron

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

Among statements (a) – (d), the correct ones are :
(a) Lime stone is decomposed to

CaO

during the extraction of iron from its oxides.
(b) In the extraction of silver, silver is extracted as an anionic complex.
(c) Nickel is purified by Mond’s process.
(d)

Zr

and

Ti

are purified by Van Arkel method.

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

Extraction of copper by smelting uses silica as an additive to remove.

MEDIUM

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

Identify the correct statement from the following:

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

The addition of silica during the extraction of copper from its sulphide ore :-

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

The magnetite ore is

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

Describe the role of the following: Coke in the extraction of iron from its oxides.

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

How would you convert pig iron into cast iron?

MEDIUM

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

Identify the auto reduction reactions from the following:

$a)$ ${Fe}_{3} O_{4} + 4 CO ⟶ 3 Fe + 4 {CO}_{2}$

$b)$ ${Cu}_{2} O + \frac{1}{2} {Cu}_{2} S ⟶ 3 Cu + \frac{1}{2} {SO}_{2}$

$c)$ $PbS + 2 PbO ⟶ 3 Pb + {SO}_{2}$

$d)$ ${Cu}_{2} O + C ⟶ 2 Cu + CO$

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

Among the reactions

(a) - (d),

the reaction(s) that does/do not occur in the blast furnace during the extraction of iron is/are:

(a)

C a O + S i O_{2} \to C a S i O_{3}

(b)

3 F e_{2} O_{3} + C O \to 2 F e_{3} O_{4} + C O_{2}

(c)

F e O + S i O_{2} \to F e S i O_{3}

(d)

F e O \to F e + \frac{1}{2} O_{2}

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Reduction of Metal Oxides to Metals

In the extraction of copper from its sulphide ore, metal is finally obtained by the oxidation of cuprous sulphide with:

Define the term. Slag.

Important Questions on General Principles and Processes of Isolation of Metals (Metallurgy)

Learn and Prepare for any exam you want !

Define the term.

Slag.