Reduction to the Metal
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CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321123 After partial roasting, the sulphide of copper is reduced by

1 Reduction by carbon
2 Electrolysis
3 Self-reduction process
4 Cyanide process
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321124 To obtain chromium from chromic oxide \(\mathrm{\left(\mathrm{Cr}_{2} \mathrm{O}_{3}\right)}\) the method used is

1 Alumino-thermic process
2 Electrolytic reduction
3 Carbon reduction
4 Carbon monoxide reduction
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321125 In which of the following isolations no reducing agent is required?

1 Iron from haematite
2 Tin from Tin stone
3 Mercury from cinnabar
4 Zinc from zinc blende
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321126 The most electropositive metals are isolated from
their ores by

1 high temperature reduction with carbon.
2 self reduction.
3 thermal decomposition.
4 electrolysis of fused ionic salts.
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CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321123 After partial roasting, the sulphide of copper is reduced by

1 Reduction by carbon
2 Electrolysis
3 Self-reduction process
4 Cyanide process
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321124 To obtain chromium from chromic oxide \(\mathrm{\left(\mathrm{Cr}_{2} \mathrm{O}_{3}\right)}\) the method used is

1 Alumino-thermic process
2 Electrolytic reduction
3 Carbon reduction
4 Carbon monoxide reduction
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321125 In which of the following isolations no reducing agent is required?

1 Iron from haematite
2 Tin from Tin stone
3 Mercury from cinnabar
4 Zinc from zinc blende
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321126 The most electropositive metals are isolated from
their ores by

1 high temperature reduction with carbon.
2 self reduction.
3 thermal decomposition.
4 electrolysis of fused ionic salts.
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CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321123 After partial roasting, the sulphide of copper is reduced by

1 Reduction by carbon
2 Electrolysis
3 Self-reduction process
4 Cyanide process
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321124 To obtain chromium from chromic oxide \(\mathrm{\left(\mathrm{Cr}_{2} \mathrm{O}_{3}\right)}\) the method used is

1 Alumino-thermic process
2 Electrolytic reduction
3 Carbon reduction
4 Carbon monoxide reduction
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321125 In which of the following isolations no reducing agent is required?

1 Iron from haematite
2 Tin from Tin stone
3 Mercury from cinnabar
4 Zinc from zinc blende
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321126 The most electropositive metals are isolated from
their ores by

1 high temperature reduction with carbon.
2 self reduction.
3 thermal decomposition.
4 electrolysis of fused ionic salts.
For More Updates join with Us
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321123 After partial roasting, the sulphide of copper is reduced by

1 Reduction by carbon
2 Electrolysis
3 Self-reduction process
4 Cyanide process
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321124 To obtain chromium from chromic oxide \(\mathrm{\left(\mathrm{Cr}_{2} \mathrm{O}_{3}\right)}\) the method used is

1 Alumino-thermic process
2 Electrolytic reduction
3 Carbon reduction
4 Carbon monoxide reduction
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321125 In which of the following isolations no reducing agent is required?

1 Iron from haematite
2 Tin from Tin stone
3 Mercury from cinnabar
4 Zinc from zinc blende
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321126 The most electropositive metals are isolated from
their ores by

1 high temperature reduction with carbon.
2 self reduction.
3 thermal decomposition.
4 electrolysis of fused ionic salts.
NEET DIGITAL LIBRARY