CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321015
When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains
1 Sulphides of copper (II) and iron (II)
2 Sulphides of copper (I) and iron (II)
3 Sulphides of copper (0) and iron (II)
4 Sulphides of copper (I) and iron (II)
Explanation:
When copper ore is mixed with sillica in a reverberatory furnace copper matte is produced. The copper matte contains sulphide of copper (I) and iron (II). \(\rm{\text { Copper matte } \rightarrow \mathrm{Cu}_{2} \mathrm{~S} \text { and } \mathrm{FeS}}\)
NCERT Exemplar
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321016
Statement A : Copper obtained after bessemerization is known as blister copper. Statement B : Blisters are produced on the surface of the metal due to escaping of dissolved \(\mathrm{\mathrm{SO}_{2}}\)
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Both the given statements are correct. So, the option (3) is correct.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321017
Blister copper contains ____ percentage of copper.
1 2
2 98
3 50
4 0
Explanation:
Blister copper contains \(98 \%\) of copper.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321018
Self-reduction of \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) to \(\mathrm{\mathrm{Cu}}\) can be carried out in
1 Bessemer converter
2 Blast furnace
3 Both (1) and (2)
4 None of these
Explanation:
Matte is obtained in blast furnace and that contains mostly \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) and \(\mathrm{\mathrm{FeS}}\). It is transferred to Bessemer converter where self-reduction takes place according to the following reactions: \(\rm{\begin{aligned}& 2 \mathrm{Cu}_{2} \mathrm{~S}+3 \mathrm{O}_{2} \longrightarrow 2 \mathrm{Cu}_{2} \mathrm{O}+2 \mathrm{SO}_{2} ; \\& 2 \mathrm{Cu}_{2} \mathrm{O}+\mathrm{Cu}_{2} \mathrm{~S} \longrightarrow 6 \mathrm{Cu}+\mathrm{SO}_{2}\end{aligned}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321019
In the extraction of copper from its sulphide ore, the metal is formed by the reduction of \(\mathrm{Cu}_{2} \mathrm{O}\) with
1 \(\mathrm{FeS}\)
2 \(\mathrm{CO}\)
3 \(\mathrm{Cu}_{2} \mathrm{~S}\)
4 \(\mathrm{SO}_{2}\)
Explanation:
In the extraction of copper from its sulphide ore, the metal is formed by the reduction of \(\mathrm{Cu}_{2} \mathrm{O}\) with \(\mathrm{Cu}_{2} \mathrm{~S}\). This reaction completes with the process of auto-reduction. Chemical reaction occuring in this reaction is as follows \(2{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} + 3{{\rm{O}}_2} \to 2{\rm{C}}{{\rm{u}}_2}{\rm{O}} + 2{\rm{S}}{{\rm{O}}_2} \uparrow \) \({\rm{C}}{{\rm{u}}_2}{\rm{O}} + \frac{1}{2}{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} \to 3{\rm{Cu}} + \frac{1}{2}{\rm{S}}{{\rm{O}}_2}\) The molten copper is allowed to cool.During cooling, dissolved \(\mathrm{SO}_{2}\) comes out in the form of blisters, so it is called blister copper.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321015
When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains
1 Sulphides of copper (II) and iron (II)
2 Sulphides of copper (I) and iron (II)
3 Sulphides of copper (0) and iron (II)
4 Sulphides of copper (I) and iron (II)
Explanation:
When copper ore is mixed with sillica in a reverberatory furnace copper matte is produced. The copper matte contains sulphide of copper (I) and iron (II). \(\rm{\text { Copper matte } \rightarrow \mathrm{Cu}_{2} \mathrm{~S} \text { and } \mathrm{FeS}}\)
NCERT Exemplar
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321016
Statement A : Copper obtained after bessemerization is known as blister copper. Statement B : Blisters are produced on the surface of the metal due to escaping of dissolved \(\mathrm{\mathrm{SO}_{2}}\)
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Both the given statements are correct. So, the option (3) is correct.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321017
Blister copper contains ____ percentage of copper.
1 2
2 98
3 50
4 0
Explanation:
Blister copper contains \(98 \%\) of copper.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321018
Self-reduction of \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) to \(\mathrm{\mathrm{Cu}}\) can be carried out in
1 Bessemer converter
2 Blast furnace
3 Both (1) and (2)
4 None of these
Explanation:
Matte is obtained in blast furnace and that contains mostly \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) and \(\mathrm{\mathrm{FeS}}\). It is transferred to Bessemer converter where self-reduction takes place according to the following reactions: \(\rm{\begin{aligned}& 2 \mathrm{Cu}_{2} \mathrm{~S}+3 \mathrm{O}_{2} \longrightarrow 2 \mathrm{Cu}_{2} \mathrm{O}+2 \mathrm{SO}_{2} ; \\& 2 \mathrm{Cu}_{2} \mathrm{O}+\mathrm{Cu}_{2} \mathrm{~S} \longrightarrow 6 \mathrm{Cu}+\mathrm{SO}_{2}\end{aligned}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321019
In the extraction of copper from its sulphide ore, the metal is formed by the reduction of \(\mathrm{Cu}_{2} \mathrm{O}\) with
1 \(\mathrm{FeS}\)
2 \(\mathrm{CO}\)
3 \(\mathrm{Cu}_{2} \mathrm{~S}\)
4 \(\mathrm{SO}_{2}\)
Explanation:
In the extraction of copper from its sulphide ore, the metal is formed by the reduction of \(\mathrm{Cu}_{2} \mathrm{O}\) with \(\mathrm{Cu}_{2} \mathrm{~S}\). This reaction completes with the process of auto-reduction. Chemical reaction occuring in this reaction is as follows \(2{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} + 3{{\rm{O}}_2} \to 2{\rm{C}}{{\rm{u}}_2}{\rm{O}} + 2{\rm{S}}{{\rm{O}}_2} \uparrow \) \({\rm{C}}{{\rm{u}}_2}{\rm{O}} + \frac{1}{2}{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} \to 3{\rm{Cu}} + \frac{1}{2}{\rm{S}}{{\rm{O}}_2}\) The molten copper is allowed to cool.During cooling, dissolved \(\mathrm{SO}_{2}\) comes out in the form of blisters, so it is called blister copper.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321015
When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains
1 Sulphides of copper (II) and iron (II)
2 Sulphides of copper (I) and iron (II)
3 Sulphides of copper (0) and iron (II)
4 Sulphides of copper (I) and iron (II)
Explanation:
When copper ore is mixed with sillica in a reverberatory furnace copper matte is produced. The copper matte contains sulphide of copper (I) and iron (II). \(\rm{\text { Copper matte } \rightarrow \mathrm{Cu}_{2} \mathrm{~S} \text { and } \mathrm{FeS}}\)
NCERT Exemplar
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321016
Statement A : Copper obtained after bessemerization is known as blister copper. Statement B : Blisters are produced on the surface of the metal due to escaping of dissolved \(\mathrm{\mathrm{SO}_{2}}\)
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Both the given statements are correct. So, the option (3) is correct.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321017
Blister copper contains ____ percentage of copper.
1 2
2 98
3 50
4 0
Explanation:
Blister copper contains \(98 \%\) of copper.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321018
Self-reduction of \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) to \(\mathrm{\mathrm{Cu}}\) can be carried out in
1 Bessemer converter
2 Blast furnace
3 Both (1) and (2)
4 None of these
Explanation:
Matte is obtained in blast furnace and that contains mostly \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) and \(\mathrm{\mathrm{FeS}}\). It is transferred to Bessemer converter where self-reduction takes place according to the following reactions: \(\rm{\begin{aligned}& 2 \mathrm{Cu}_{2} \mathrm{~S}+3 \mathrm{O}_{2} \longrightarrow 2 \mathrm{Cu}_{2} \mathrm{O}+2 \mathrm{SO}_{2} ; \\& 2 \mathrm{Cu}_{2} \mathrm{O}+\mathrm{Cu}_{2} \mathrm{~S} \longrightarrow 6 \mathrm{Cu}+\mathrm{SO}_{2}\end{aligned}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321019
In the extraction of copper from its sulphide ore, the metal is formed by the reduction of \(\mathrm{Cu}_{2} \mathrm{O}\) with
1 \(\mathrm{FeS}\)
2 \(\mathrm{CO}\)
3 \(\mathrm{Cu}_{2} \mathrm{~S}\)
4 \(\mathrm{SO}_{2}\)
Explanation:
In the extraction of copper from its sulphide ore, the metal is formed by the reduction of \(\mathrm{Cu}_{2} \mathrm{O}\) with \(\mathrm{Cu}_{2} \mathrm{~S}\). This reaction completes with the process of auto-reduction. Chemical reaction occuring in this reaction is as follows \(2{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} + 3{{\rm{O}}_2} \to 2{\rm{C}}{{\rm{u}}_2}{\rm{O}} + 2{\rm{S}}{{\rm{O}}_2} \uparrow \) \({\rm{C}}{{\rm{u}}_2}{\rm{O}} + \frac{1}{2}{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} \to 3{\rm{Cu}} + \frac{1}{2}{\rm{S}}{{\rm{O}}_2}\) The molten copper is allowed to cool.During cooling, dissolved \(\mathrm{SO}_{2}\) comes out in the form of blisters, so it is called blister copper.
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CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321015
When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains
1 Sulphides of copper (II) and iron (II)
2 Sulphides of copper (I) and iron (II)
3 Sulphides of copper (0) and iron (II)
4 Sulphides of copper (I) and iron (II)
Explanation:
When copper ore is mixed with sillica in a reverberatory furnace copper matte is produced. The copper matte contains sulphide of copper (I) and iron (II). \(\rm{\text { Copper matte } \rightarrow \mathrm{Cu}_{2} \mathrm{~S} \text { and } \mathrm{FeS}}\)
NCERT Exemplar
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321016
Statement A : Copper obtained after bessemerization is known as blister copper. Statement B : Blisters are produced on the surface of the metal due to escaping of dissolved \(\mathrm{\mathrm{SO}_{2}}\)
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Both the given statements are correct. So, the option (3) is correct.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321017
Blister copper contains ____ percentage of copper.
1 2
2 98
3 50
4 0
Explanation:
Blister copper contains \(98 \%\) of copper.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321018
Self-reduction of \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) to \(\mathrm{\mathrm{Cu}}\) can be carried out in
1 Bessemer converter
2 Blast furnace
3 Both (1) and (2)
4 None of these
Explanation:
Matte is obtained in blast furnace and that contains mostly \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) and \(\mathrm{\mathrm{FeS}}\). It is transferred to Bessemer converter where self-reduction takes place according to the following reactions: \(\rm{\begin{aligned}& 2 \mathrm{Cu}_{2} \mathrm{~S}+3 \mathrm{O}_{2} \longrightarrow 2 \mathrm{Cu}_{2} \mathrm{O}+2 \mathrm{SO}_{2} ; \\& 2 \mathrm{Cu}_{2} \mathrm{O}+\mathrm{Cu}_{2} \mathrm{~S} \longrightarrow 6 \mathrm{Cu}+\mathrm{SO}_{2}\end{aligned}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321019
In the extraction of copper from its sulphide ore, the metal is formed by the reduction of \(\mathrm{Cu}_{2} \mathrm{O}\) with
1 \(\mathrm{FeS}\)
2 \(\mathrm{CO}\)
3 \(\mathrm{Cu}_{2} \mathrm{~S}\)
4 \(\mathrm{SO}_{2}\)
Explanation:
In the extraction of copper from its sulphide ore, the metal is formed by the reduction of \(\mathrm{Cu}_{2} \mathrm{O}\) with \(\mathrm{Cu}_{2} \mathrm{~S}\). This reaction completes with the process of auto-reduction. Chemical reaction occuring in this reaction is as follows \(2{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} + 3{{\rm{O}}_2} \to 2{\rm{C}}{{\rm{u}}_2}{\rm{O}} + 2{\rm{S}}{{\rm{O}}_2} \uparrow \) \({\rm{C}}{{\rm{u}}_2}{\rm{O}} + \frac{1}{2}{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} \to 3{\rm{Cu}} + \frac{1}{2}{\rm{S}}{{\rm{O}}_2}\) The molten copper is allowed to cool.During cooling, dissolved \(\mathrm{SO}_{2}\) comes out in the form of blisters, so it is called blister copper.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321015
When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains
1 Sulphides of copper (II) and iron (II)
2 Sulphides of copper (I) and iron (II)
3 Sulphides of copper (0) and iron (II)
4 Sulphides of copper (I) and iron (II)
Explanation:
When copper ore is mixed with sillica in a reverberatory furnace copper matte is produced. The copper matte contains sulphide of copper (I) and iron (II). \(\rm{\text { Copper matte } \rightarrow \mathrm{Cu}_{2} \mathrm{~S} \text { and } \mathrm{FeS}}\)
NCERT Exemplar
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321016
Statement A : Copper obtained after bessemerization is known as blister copper. Statement B : Blisters are produced on the surface of the metal due to escaping of dissolved \(\mathrm{\mathrm{SO}_{2}}\)
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Both the given statements are correct. So, the option (3) is correct.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321017
Blister copper contains ____ percentage of copper.
1 2
2 98
3 50
4 0
Explanation:
Blister copper contains \(98 \%\) of copper.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321018
Self-reduction of \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) to \(\mathrm{\mathrm{Cu}}\) can be carried out in
1 Bessemer converter
2 Blast furnace
3 Both (1) and (2)
4 None of these
Explanation:
Matte is obtained in blast furnace and that contains mostly \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) and \(\mathrm{\mathrm{FeS}}\). It is transferred to Bessemer converter where self-reduction takes place according to the following reactions: \(\rm{\begin{aligned}& 2 \mathrm{Cu}_{2} \mathrm{~S}+3 \mathrm{O}_{2} \longrightarrow 2 \mathrm{Cu}_{2} \mathrm{O}+2 \mathrm{SO}_{2} ; \\& 2 \mathrm{Cu}_{2} \mathrm{O}+\mathrm{Cu}_{2} \mathrm{~S} \longrightarrow 6 \mathrm{Cu}+\mathrm{SO}_{2}\end{aligned}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321019
In the extraction of copper from its sulphide ore, the metal is formed by the reduction of \(\mathrm{Cu}_{2} \mathrm{O}\) with
1 \(\mathrm{FeS}\)
2 \(\mathrm{CO}\)
3 \(\mathrm{Cu}_{2} \mathrm{~S}\)
4 \(\mathrm{SO}_{2}\)
Explanation:
In the extraction of copper from its sulphide ore, the metal is formed by the reduction of \(\mathrm{Cu}_{2} \mathrm{O}\) with \(\mathrm{Cu}_{2} \mathrm{~S}\). This reaction completes with the process of auto-reduction. Chemical reaction occuring in this reaction is as follows \(2{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} + 3{{\rm{O}}_2} \to 2{\rm{C}}{{\rm{u}}_2}{\rm{O}} + 2{\rm{S}}{{\rm{O}}_2} \uparrow \) \({\rm{C}}{{\rm{u}}_2}{\rm{O}} + \frac{1}{2}{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} \to 3{\rm{Cu}} + \frac{1}{2}{\rm{S}}{{\rm{O}}_2}\) The molten copper is allowed to cool.During cooling, dissolved \(\mathrm{SO}_{2}\) comes out in the form of blisters, so it is called blister copper.