CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321144
In which of the following pair of metals, both are commercially extracted from their respective ores by self-reduction method?
1 \(\mathrm{\mathrm{Zn}, \mathrm{Cu}}\)
2 \(\mathrm{\mathrm{Pb}, \mathrm{Cu}}\)
3 \(\mathrm{\mathrm{Sn}, \mathrm{Zn}}\)
4 \(\mathrm{\mathrm{Al}, \mathrm{Ag}}\)
Explanation:
Lead and copper are extracted by selfreduction method. Zinc and tin are extracted by carbon reduction method Aluminium is extracted by using electrolytic reduction method. Silver is extracted by using hydrometallurgical process.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321145
Which of the following oxides cannot be reduced by auto or self reduction?
1 \(\mathrm{\mathrm{HgO}}\)
2 \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\)
3 \(\mathrm{\mathrm{PbO}}\)
4 \(\mathrm{\mathrm{Al}_{2} \mathrm{O}_{3}}\)
Explanation:
Conceptual Questions
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321146
Auto reduction process is used in the extraction of
1 \(\mathrm{Cu}\) and \(\mathrm{Hg}\)
2 \(\mathrm{Zn}\) and \(\mathrm{Hg}\)
3 \(\mathrm{Cu}\) and \(\mathrm{Al}\)
4 \({\rm{Fe}}\) and \(\mathrm{Pb}\)
Explanation:
Auto reduction process is used in the extraction of \(\mathrm{Cu}\) and \(\mathrm{Hg}\). \(2{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} + 3{{\rm{O}}_2} \to 2{\rm{C}}{{\rm{u}}_2}{\rm{O}} + 2{\rm{S}}{{\rm{O}}_2}\) \(2{\rm{C}}{{\rm{u}}_2}{\rm{O}} + {\rm{C}}{{\rm{u}}_2}\;{\rm{S}} \to 6{\rm{Cu}} + {\rm{S}}{{\rm{O}}_2}\) \(2{\rm{HgS}} + 3{{\rm{O}}_2} \to 2{\rm{HgO}} + 3{\rm{S}}{{\rm{O}}_2}\) \({\text{2Hg}}\,{\text{O}}\xrightarrow{\Delta }{\text{2Hg}} + {{\text{O}}_{\text{2}}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321147
Heating the mixture of \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\) and \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) will give
1 \(\mathrm{\mathrm{Cu}+\mathrm{SO}_{2}}\)
2 \(\mathrm{\mathrm{Cu}+\mathrm{SO}_{3}}\)
3 \(\mathrm{\mathrm{CuO}+\mathrm{CuS}}\)
4 \(\mathrm{\mathrm{Cu}_{2} \mathrm{SO}_{3}}\)
Explanation:
Self-reduction occurs upon heating a mixture of oxide and sulphide of copper. \(\rm{2 \mathrm{Cu}_{2} \mathrm{O}+\mathrm{Cu}_{2} \mathrm{~S} \longrightarrow 6 \mathrm{Cu}+\mathrm{SO}_{2}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321148
Formation of metallic copper from the sulphide ore in the commercial thermo-metallurgical process essentially involves which one of the following reaction:
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321144
In which of the following pair of metals, both are commercially extracted from their respective ores by self-reduction method?
1 \(\mathrm{\mathrm{Zn}, \mathrm{Cu}}\)
2 \(\mathrm{\mathrm{Pb}, \mathrm{Cu}}\)
3 \(\mathrm{\mathrm{Sn}, \mathrm{Zn}}\)
4 \(\mathrm{\mathrm{Al}, \mathrm{Ag}}\)
Explanation:
Lead and copper are extracted by selfreduction method. Zinc and tin are extracted by carbon reduction method Aluminium is extracted by using electrolytic reduction method. Silver is extracted by using hydrometallurgical process.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321145
Which of the following oxides cannot be reduced by auto or self reduction?
1 \(\mathrm{\mathrm{HgO}}\)
2 \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\)
3 \(\mathrm{\mathrm{PbO}}\)
4 \(\mathrm{\mathrm{Al}_{2} \mathrm{O}_{3}}\)
Explanation:
Conceptual Questions
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321146
Auto reduction process is used in the extraction of
1 \(\mathrm{Cu}\) and \(\mathrm{Hg}\)
2 \(\mathrm{Zn}\) and \(\mathrm{Hg}\)
3 \(\mathrm{Cu}\) and \(\mathrm{Al}\)
4 \({\rm{Fe}}\) and \(\mathrm{Pb}\)
Explanation:
Auto reduction process is used in the extraction of \(\mathrm{Cu}\) and \(\mathrm{Hg}\). \(2{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} + 3{{\rm{O}}_2} \to 2{\rm{C}}{{\rm{u}}_2}{\rm{O}} + 2{\rm{S}}{{\rm{O}}_2}\) \(2{\rm{C}}{{\rm{u}}_2}{\rm{O}} + {\rm{C}}{{\rm{u}}_2}\;{\rm{S}} \to 6{\rm{Cu}} + {\rm{S}}{{\rm{O}}_2}\) \(2{\rm{HgS}} + 3{{\rm{O}}_2} \to 2{\rm{HgO}} + 3{\rm{S}}{{\rm{O}}_2}\) \({\text{2Hg}}\,{\text{O}}\xrightarrow{\Delta }{\text{2Hg}} + {{\text{O}}_{\text{2}}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321147
Heating the mixture of \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\) and \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) will give
1 \(\mathrm{\mathrm{Cu}+\mathrm{SO}_{2}}\)
2 \(\mathrm{\mathrm{Cu}+\mathrm{SO}_{3}}\)
3 \(\mathrm{\mathrm{CuO}+\mathrm{CuS}}\)
4 \(\mathrm{\mathrm{Cu}_{2} \mathrm{SO}_{3}}\)
Explanation:
Self-reduction occurs upon heating a mixture of oxide and sulphide of copper. \(\rm{2 \mathrm{Cu}_{2} \mathrm{O}+\mathrm{Cu}_{2} \mathrm{~S} \longrightarrow 6 \mathrm{Cu}+\mathrm{SO}_{2}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321148
Formation of metallic copper from the sulphide ore in the commercial thermo-metallurgical process essentially involves which one of the following reaction:
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321144
In which of the following pair of metals, both are commercially extracted from their respective ores by self-reduction method?
1 \(\mathrm{\mathrm{Zn}, \mathrm{Cu}}\)
2 \(\mathrm{\mathrm{Pb}, \mathrm{Cu}}\)
3 \(\mathrm{\mathrm{Sn}, \mathrm{Zn}}\)
4 \(\mathrm{\mathrm{Al}, \mathrm{Ag}}\)
Explanation:
Lead and copper are extracted by selfreduction method. Zinc and tin are extracted by carbon reduction method Aluminium is extracted by using electrolytic reduction method. Silver is extracted by using hydrometallurgical process.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321145
Which of the following oxides cannot be reduced by auto or self reduction?
1 \(\mathrm{\mathrm{HgO}}\)
2 \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\)
3 \(\mathrm{\mathrm{PbO}}\)
4 \(\mathrm{\mathrm{Al}_{2} \mathrm{O}_{3}}\)
Explanation:
Conceptual Questions
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321146
Auto reduction process is used in the extraction of
1 \(\mathrm{Cu}\) and \(\mathrm{Hg}\)
2 \(\mathrm{Zn}\) and \(\mathrm{Hg}\)
3 \(\mathrm{Cu}\) and \(\mathrm{Al}\)
4 \({\rm{Fe}}\) and \(\mathrm{Pb}\)
Explanation:
Auto reduction process is used in the extraction of \(\mathrm{Cu}\) and \(\mathrm{Hg}\). \(2{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} + 3{{\rm{O}}_2} \to 2{\rm{C}}{{\rm{u}}_2}{\rm{O}} + 2{\rm{S}}{{\rm{O}}_2}\) \(2{\rm{C}}{{\rm{u}}_2}{\rm{O}} + {\rm{C}}{{\rm{u}}_2}\;{\rm{S}} \to 6{\rm{Cu}} + {\rm{S}}{{\rm{O}}_2}\) \(2{\rm{HgS}} + 3{{\rm{O}}_2} \to 2{\rm{HgO}} + 3{\rm{S}}{{\rm{O}}_2}\) \({\text{2Hg}}\,{\text{O}}\xrightarrow{\Delta }{\text{2Hg}} + {{\text{O}}_{\text{2}}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321147
Heating the mixture of \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\) and \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) will give
1 \(\mathrm{\mathrm{Cu}+\mathrm{SO}_{2}}\)
2 \(\mathrm{\mathrm{Cu}+\mathrm{SO}_{3}}\)
3 \(\mathrm{\mathrm{CuO}+\mathrm{CuS}}\)
4 \(\mathrm{\mathrm{Cu}_{2} \mathrm{SO}_{3}}\)
Explanation:
Self-reduction occurs upon heating a mixture of oxide and sulphide of copper. \(\rm{2 \mathrm{Cu}_{2} \mathrm{O}+\mathrm{Cu}_{2} \mathrm{~S} \longrightarrow 6 \mathrm{Cu}+\mathrm{SO}_{2}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321148
Formation of metallic copper from the sulphide ore in the commercial thermo-metallurgical process essentially involves which one of the following reaction:
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321144
In which of the following pair of metals, both are commercially extracted from their respective ores by self-reduction method?
1 \(\mathrm{\mathrm{Zn}, \mathrm{Cu}}\)
2 \(\mathrm{\mathrm{Pb}, \mathrm{Cu}}\)
3 \(\mathrm{\mathrm{Sn}, \mathrm{Zn}}\)
4 \(\mathrm{\mathrm{Al}, \mathrm{Ag}}\)
Explanation:
Lead and copper are extracted by selfreduction method. Zinc and tin are extracted by carbon reduction method Aluminium is extracted by using electrolytic reduction method. Silver is extracted by using hydrometallurgical process.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321145
Which of the following oxides cannot be reduced by auto or self reduction?
1 \(\mathrm{\mathrm{HgO}}\)
2 \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\)
3 \(\mathrm{\mathrm{PbO}}\)
4 \(\mathrm{\mathrm{Al}_{2} \mathrm{O}_{3}}\)
Explanation:
Conceptual Questions
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321146
Auto reduction process is used in the extraction of
1 \(\mathrm{Cu}\) and \(\mathrm{Hg}\)
2 \(\mathrm{Zn}\) and \(\mathrm{Hg}\)
3 \(\mathrm{Cu}\) and \(\mathrm{Al}\)
4 \({\rm{Fe}}\) and \(\mathrm{Pb}\)
Explanation:
Auto reduction process is used in the extraction of \(\mathrm{Cu}\) and \(\mathrm{Hg}\). \(2{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} + 3{{\rm{O}}_2} \to 2{\rm{C}}{{\rm{u}}_2}{\rm{O}} + 2{\rm{S}}{{\rm{O}}_2}\) \(2{\rm{C}}{{\rm{u}}_2}{\rm{O}} + {\rm{C}}{{\rm{u}}_2}\;{\rm{S}} \to 6{\rm{Cu}} + {\rm{S}}{{\rm{O}}_2}\) \(2{\rm{HgS}} + 3{{\rm{O}}_2} \to 2{\rm{HgO}} + 3{\rm{S}}{{\rm{O}}_2}\) \({\text{2Hg}}\,{\text{O}}\xrightarrow{\Delta }{\text{2Hg}} + {{\text{O}}_{\text{2}}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321147
Heating the mixture of \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\) and \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) will give
1 \(\mathrm{\mathrm{Cu}+\mathrm{SO}_{2}}\)
2 \(\mathrm{\mathrm{Cu}+\mathrm{SO}_{3}}\)
3 \(\mathrm{\mathrm{CuO}+\mathrm{CuS}}\)
4 \(\mathrm{\mathrm{Cu}_{2} \mathrm{SO}_{3}}\)
Explanation:
Self-reduction occurs upon heating a mixture of oxide and sulphide of copper. \(\rm{2 \mathrm{Cu}_{2} \mathrm{O}+\mathrm{Cu}_{2} \mathrm{~S} \longrightarrow 6 \mathrm{Cu}+\mathrm{SO}_{2}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321148
Formation of metallic copper from the sulphide ore in the commercial thermo-metallurgical process essentially involves which one of the following reaction:
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321144
In which of the following pair of metals, both are commercially extracted from their respective ores by self-reduction method?
1 \(\mathrm{\mathrm{Zn}, \mathrm{Cu}}\)
2 \(\mathrm{\mathrm{Pb}, \mathrm{Cu}}\)
3 \(\mathrm{\mathrm{Sn}, \mathrm{Zn}}\)
4 \(\mathrm{\mathrm{Al}, \mathrm{Ag}}\)
Explanation:
Lead and copper are extracted by selfreduction method. Zinc and tin are extracted by carbon reduction method Aluminium is extracted by using electrolytic reduction method. Silver is extracted by using hydrometallurgical process.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321145
Which of the following oxides cannot be reduced by auto or self reduction?
1 \(\mathrm{\mathrm{HgO}}\)
2 \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\)
3 \(\mathrm{\mathrm{PbO}}\)
4 \(\mathrm{\mathrm{Al}_{2} \mathrm{O}_{3}}\)
Explanation:
Conceptual Questions
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321146
Auto reduction process is used in the extraction of
1 \(\mathrm{Cu}\) and \(\mathrm{Hg}\)
2 \(\mathrm{Zn}\) and \(\mathrm{Hg}\)
3 \(\mathrm{Cu}\) and \(\mathrm{Al}\)
4 \({\rm{Fe}}\) and \(\mathrm{Pb}\)
Explanation:
Auto reduction process is used in the extraction of \(\mathrm{Cu}\) and \(\mathrm{Hg}\). \(2{\rm{C}}{{\rm{u}}_2}\;{\rm{S}} + 3{{\rm{O}}_2} \to 2{\rm{C}}{{\rm{u}}_2}{\rm{O}} + 2{\rm{S}}{{\rm{O}}_2}\) \(2{\rm{C}}{{\rm{u}}_2}{\rm{O}} + {\rm{C}}{{\rm{u}}_2}\;{\rm{S}} \to 6{\rm{Cu}} + {\rm{S}}{{\rm{O}}_2}\) \(2{\rm{HgS}} + 3{{\rm{O}}_2} \to 2{\rm{HgO}} + 3{\rm{S}}{{\rm{O}}_2}\) \({\text{2Hg}}\,{\text{O}}\xrightarrow{\Delta }{\text{2Hg}} + {{\text{O}}_{\text{2}}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321147
Heating the mixture of \(\mathrm{\mathrm{Cu}_{2} \mathrm{O}}\) and \(\mathrm{\mathrm{Cu}_{2} \mathrm{~S}}\) will give
1 \(\mathrm{\mathrm{Cu}+\mathrm{SO}_{2}}\)
2 \(\mathrm{\mathrm{Cu}+\mathrm{SO}_{3}}\)
3 \(\mathrm{\mathrm{CuO}+\mathrm{CuS}}\)
4 \(\mathrm{\mathrm{Cu}_{2} \mathrm{SO}_{3}}\)
Explanation:
Self-reduction occurs upon heating a mixture of oxide and sulphide of copper. \(\rm{2 \mathrm{Cu}_{2} \mathrm{O}+\mathrm{Cu}_{2} \mathrm{~S} \longrightarrow 6 \mathrm{Cu}+\mathrm{SO}_{2}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321148
Formation of metallic copper from the sulphide ore in the commercial thermo-metallurgical process essentially involves which one of the following reaction:
