HARD
Earn 100

Explain the term ‘Bessemerisation’ in the extraction of copper from cuprous oxide.

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)>Extraction of Important Elements from their Ores
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)>Extraction of Important Elements from their Ores
In the context of the Hall-Heroult process for the extraction of Al, which of the following statements is false?
EASY
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores
Cast iron is used for the manufacture of :
EASY
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores
Which of the following metal is leached by cyanide process 
EASY
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores
Hall Heroult's process is given by:
MEDIUM
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores
Explain the process of obtaining "blister copper" from "copper matte" with equation.
EASY
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores
What is the composition of copper matte?
EASY
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores
Copper is extracted from copper pyrites by
EASY
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores
In the Hall-Heroult process, aluminium is formed at the cathode. The cathode is made out of:
EASY
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores
The purest form of commercial iron is:
EASY
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores
In the context of the Hall-Heroult process for the extraction of Al, which of the following statement is incorrect.
EASY
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores
Name the process that is employed to refine aluminium.
MEDIUM
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores
The final step for extraction of copper from copper pyrite in bessemer converter involves the reaction
MEDIUM
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores
Identify the correct statement from the following:
EASY
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores
The molecular formula of malachite ore is:
EASY
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores
Which among the following reactions occurs at the zone of slag formation in extraction of iron by blast furnace?
EASY
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores

Match the following 

   List - I     List - II
(a) Copper (i) Bauxite
(b) Iron (ii) Malachite
(c) Zinc (iii) Haematite
(d) Aluminium (iv) Calamine
    (v) Galena

The correct answer is

EASY
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores

Among the following, the main reactions occurring in blast furnace during extraction of iron from haematite are:

(i) Fe2O3+3CO⟶2Fe+3CO2

(ii) FeO+SiO2⟶FeSiO3

(iii) Fe2O3+3C⟶2Fe+3CO

(iv) CaO+SiO2⟶CaSiO3

MEDIUM
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores
The form of iron obtained from blast furnace is :
EASY
Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Extraction of Important Elements from their Ores
In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with: