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

321045 Plumbo-solvency refers to :

1 Oxidation of lead to lead oxide
2 Oxidation of lead to red lead
3 Dissolution of lead in water containing air
4 Making lead wires by forcing heated metal through a dye
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321046 Lead is extracted from galena ( \(\mathrm{PbS}\) ), either by following ways.
(I) \(\mathrm{PbS} \xrightarrow[-\mathrm{SO}_{2}]{\text { Roasted in air }} \mathrm{PbO} \xrightarrow[-\mathrm{CO}_{2}]{\text { Heated with } \mathrm{C}} \mathrm{Pb}\)
(II) \(\mathrm{PbS} \xrightarrow[-\mathrm{SO}_{2}]{\text { Roasted in air }} \mathrm{PbO} \xrightarrow{\text { Heated with } \mathrm{PbS}} \mathrm{Pb}+\mathrm{SO}_{2}\)
Auto-reduction process is

1 I
2 II
3 Both (I) and (II)
4 None of these
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321047 Roasted tin stone ore after washing with water is known as

1 block tin
2 white tin
3 black tin
4 granulated tin
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321048 The percentage of impurities present in zinc spelter is

1 10
2 0.2
3 2
4 0.02
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321049 Which of the following species is a desirable substance in the extraction of copper but not in the extraction of iron?

1 \(\mathrm{\mathrm{CaSiO}_{3}}\)
2 \(\mathrm{\mathrm{FeSiO}_{3}}\)
3 \(\mathrm{\mathrm{SiO}_{2}}\)
4 Coke
NEET DIGITAL LIBRARY
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321045 Plumbo-solvency refers to :

1 Oxidation of lead to lead oxide
2 Oxidation of lead to red lead
3 Dissolution of lead in water containing air
4 Making lead wires by forcing heated metal through a dye
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321046 Lead is extracted from galena ( \(\mathrm{PbS}\) ), either by following ways.
(I) \(\mathrm{PbS} \xrightarrow[-\mathrm{SO}_{2}]{\text { Roasted in air }} \mathrm{PbO} \xrightarrow[-\mathrm{CO}_{2}]{\text { Heated with } \mathrm{C}} \mathrm{Pb}\)
(II) \(\mathrm{PbS} \xrightarrow[-\mathrm{SO}_{2}]{\text { Roasted in air }} \mathrm{PbO} \xrightarrow{\text { Heated with } \mathrm{PbS}} \mathrm{Pb}+\mathrm{SO}_{2}\)
Auto-reduction process is

1 I
2 II
3 Both (I) and (II)
4 None of these
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321047 Roasted tin stone ore after washing with water is known as

1 block tin
2 white tin
3 black tin
4 granulated tin
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321048 The percentage of impurities present in zinc spelter is

1 10
2 0.2
3 2
4 0.02
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321049 Which of the following species is a desirable substance in the extraction of copper but not in the extraction of iron?

1 \(\mathrm{\mathrm{CaSiO}_{3}}\)
2 \(\mathrm{\mathrm{FeSiO}_{3}}\)
3 \(\mathrm{\mathrm{SiO}_{2}}\)
4 Coke
Join With Us for More Updates
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321045 Plumbo-solvency refers to :

1 Oxidation of lead to lead oxide
2 Oxidation of lead to red lead
3 Dissolution of lead in water containing air
4 Making lead wires by forcing heated metal through a dye
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321046 Lead is extracted from galena ( \(\mathrm{PbS}\) ), either by following ways.
(I) \(\mathrm{PbS} \xrightarrow[-\mathrm{SO}_{2}]{\text { Roasted in air }} \mathrm{PbO} \xrightarrow[-\mathrm{CO}_{2}]{\text { Heated with } \mathrm{C}} \mathrm{Pb}\)
(II) \(\mathrm{PbS} \xrightarrow[-\mathrm{SO}_{2}]{\text { Roasted in air }} \mathrm{PbO} \xrightarrow{\text { Heated with } \mathrm{PbS}} \mathrm{Pb}+\mathrm{SO}_{2}\)
Auto-reduction process is

1 I
2 II
3 Both (I) and (II)
4 None of these
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321047 Roasted tin stone ore after washing with water is known as

1 block tin
2 white tin
3 black tin
4 granulated tin
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321048 The percentage of impurities present in zinc spelter is

1 10
2 0.2
3 2
4 0.02
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321049 Which of the following species is a desirable substance in the extraction of copper but not in the extraction of iron?

1 \(\mathrm{\mathrm{CaSiO}_{3}}\)
2 \(\mathrm{\mathrm{FeSiO}_{3}}\)
3 \(\mathrm{\mathrm{SiO}_{2}}\)
4 Coke
For More Updates join with Us
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321045 Plumbo-solvency refers to :

1 Oxidation of lead to lead oxide
2 Oxidation of lead to red lead
3 Dissolution of lead in water containing air
4 Making lead wires by forcing heated metal through a dye
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321046 Lead is extracted from galena ( \(\mathrm{PbS}\) ), either by following ways.
(I) \(\mathrm{PbS} \xrightarrow[-\mathrm{SO}_{2}]{\text { Roasted in air }} \mathrm{PbO} \xrightarrow[-\mathrm{CO}_{2}]{\text { Heated with } \mathrm{C}} \mathrm{Pb}\)
(II) \(\mathrm{PbS} \xrightarrow[-\mathrm{SO}_{2}]{\text { Roasted in air }} \mathrm{PbO} \xrightarrow{\text { Heated with } \mathrm{PbS}} \mathrm{Pb}+\mathrm{SO}_{2}\)
Auto-reduction process is

1 I
2 II
3 Both (I) and (II)
4 None of these
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321047 Roasted tin stone ore after washing with water is known as

1 block tin
2 white tin
3 black tin
4 granulated tin
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321048 The percentage of impurities present in zinc spelter is

1 10
2 0.2
3 2
4 0.02
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321049 Which of the following species is a desirable substance in the extraction of copper but not in the extraction of iron?

1 \(\mathrm{\mathrm{CaSiO}_{3}}\)
2 \(\mathrm{\mathrm{FeSiO}_{3}}\)
3 \(\mathrm{\mathrm{SiO}_{2}}\)
4 Coke
NEET DIGITAL LIBRARY
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321045 Plumbo-solvency refers to :

1 Oxidation of lead to lead oxide
2 Oxidation of lead to red lead
3 Dissolution of lead in water containing air
4 Making lead wires by forcing heated metal through a dye
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321046 Lead is extracted from galena ( \(\mathrm{PbS}\) ), either by following ways.
(I) \(\mathrm{PbS} \xrightarrow[-\mathrm{SO}_{2}]{\text { Roasted in air }} \mathrm{PbO} \xrightarrow[-\mathrm{CO}_{2}]{\text { Heated with } \mathrm{C}} \mathrm{Pb}\)
(II) \(\mathrm{PbS} \xrightarrow[-\mathrm{SO}_{2}]{\text { Roasted in air }} \mathrm{PbO} \xrightarrow{\text { Heated with } \mathrm{PbS}} \mathrm{Pb}+\mathrm{SO}_{2}\)
Auto-reduction process is

1 I
2 II
3 Both (I) and (II)
4 None of these
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321047 Roasted tin stone ore after washing with water is known as

1 block tin
2 white tin
3 black tin
4 granulated tin
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321048 The percentage of impurities present in zinc spelter is

1 10
2 0.2
3 2
4 0.02
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321049 Which of the following species is a desirable substance in the extraction of copper but not in the extraction of iron?

1 \(\mathrm{\mathrm{CaSiO}_{3}}\)
2 \(\mathrm{\mathrm{FeSiO}_{3}}\)
3 \(\mathrm{\mathrm{SiO}_{2}}\)
4 Coke