Extraction of Metals by Pyrometallurgy and Application of Ellingham Diagram
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CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321020 Copper is extracted from copper pyrites by heating in a Bessemer converter. The method is based on the principle that

1 iron has less affinity for oxygen than sulphur at high temperature
2 sulphur has less affinity for oxygen at high temperature
3 copper has more affinity for oxygen than sulphur at high temerature
4 copper has less affinity for oxygen than sulphur at high temperature.
KCET - 2015
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321021 Extraction of copper by smelting uses silica as an additive to remove :

1 \(\mathrm{\mathrm{FeS}}\)
2 \(\mathrm{\mathrm{FeO}}\)
3 \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\)
4 \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\)
JEE - 2016
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321022 In the extraction of copper from its sulphide ore, metal is finally obtained by the oxidation of cuprous sulphide with:

1 \(\mathrm{\mathrm{SO}_{2}}\)
2 \(\mathrm{\mathrm{Fe}_{2} \mathrm{O}_{3}}\)
3 \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\)
4 \(\mathrm{\mathrm{CO}}\)
JEE - 2018
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321023 Statement A :
While the extraction of copper, one of the steps involved is
\(\rm{{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} + 2{\rm{C}}{{\rm{u}}_2}{\rm{O}} \to 6{\rm{Cu}} + {\rm{S}}{{\rm{O}}_2}}\)
Statement B :
In this reaction, \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) is the reducing agent whereas \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\) is the oxidising agent.

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.
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CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321020 Copper is extracted from copper pyrites by heating in a Bessemer converter. The method is based on the principle that

1 iron has less affinity for oxygen than sulphur at high temperature
2 sulphur has less affinity for oxygen at high temperature
3 copper has more affinity for oxygen than sulphur at high temerature
4 copper has less affinity for oxygen than sulphur at high temperature.
KCET - 2015
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321021 Extraction of copper by smelting uses silica as an additive to remove :

1 \(\mathrm{\mathrm{FeS}}\)
2 \(\mathrm{\mathrm{FeO}}\)
3 \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\)
4 \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\)
JEE - 2016
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321022 In the extraction of copper from its sulphide ore, metal is finally obtained by the oxidation of cuprous sulphide with:

1 \(\mathrm{\mathrm{SO}_{2}}\)
2 \(\mathrm{\mathrm{Fe}_{2} \mathrm{O}_{3}}\)
3 \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\)
4 \(\mathrm{\mathrm{CO}}\)
JEE - 2018
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321023 Statement A :
While the extraction of copper, one of the steps involved is
\(\rm{{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} + 2{\rm{C}}{{\rm{u}}_2}{\rm{O}} \to 6{\rm{Cu}} + {\rm{S}}{{\rm{O}}_2}}\)
Statement B :
In this reaction, \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) is the reducing agent whereas \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\) is the oxidising agent.

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.
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CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321020 Copper is extracted from copper pyrites by heating in a Bessemer converter. The method is based on the principle that

1 iron has less affinity for oxygen than sulphur at high temperature
2 sulphur has less affinity for oxygen at high temperature
3 copper has more affinity for oxygen than sulphur at high temerature
4 copper has less affinity for oxygen than sulphur at high temperature.
KCET - 2015
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321021 Extraction of copper by smelting uses silica as an additive to remove :

1 \(\mathrm{\mathrm{FeS}}\)
2 \(\mathrm{\mathrm{FeO}}\)
3 \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\)
4 \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\)
JEE - 2016
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321022 In the extraction of copper from its sulphide ore, metal is finally obtained by the oxidation of cuprous sulphide with:

1 \(\mathrm{\mathrm{SO}_{2}}\)
2 \(\mathrm{\mathrm{Fe}_{2} \mathrm{O}_{3}}\)
3 \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\)
4 \(\mathrm{\mathrm{CO}}\)
JEE - 2018
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321023 Statement A :
While the extraction of copper, one of the steps involved is
\(\rm{{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} + 2{\rm{C}}{{\rm{u}}_2}{\rm{O}} \to 6{\rm{Cu}} + {\rm{S}}{{\rm{O}}_2}}\)
Statement B :
In this reaction, \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) is the reducing agent whereas \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\) is the oxidising agent.

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.
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CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321020 Copper is extracted from copper pyrites by heating in a Bessemer converter. The method is based on the principle that

1 iron has less affinity for oxygen than sulphur at high temperature
2 sulphur has less affinity for oxygen at high temperature
3 copper has more affinity for oxygen than sulphur at high temerature
4 copper has less affinity for oxygen than sulphur at high temperature.
KCET - 2015
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321021 Extraction of copper by smelting uses silica as an additive to remove :

1 \(\mathrm{\mathrm{FeS}}\)
2 \(\mathrm{\mathrm{FeO}}\)
3 \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\)
4 \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\)
JEE - 2016
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321022 In the extraction of copper from its sulphide ore, metal is finally obtained by the oxidation of cuprous sulphide with:

1 \(\mathrm{\mathrm{SO}_{2}}\)
2 \(\mathrm{\mathrm{Fe}_{2} \mathrm{O}_{3}}\)
3 \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\)
4 \(\mathrm{\mathrm{CO}}\)
JEE - 2018
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321023 Statement A :
While the extraction of copper, one of the steps involved is
\(\rm{{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} + 2{\rm{C}}{{\rm{u}}_2}{\rm{O}} \to 6{\rm{Cu}} + {\rm{S}}{{\rm{O}}_2}}\)
Statement B :
In this reaction, \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) is the reducing agent whereas \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\) is the oxidising agent.

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.
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