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

321024 The purest form of iron is prepared by oxidising impurities from cast iron in a reverberatory furnace. Which iron ore is used to line the furnace?

1 Iron pyrites
2 Magnetitie
3 Haematite
4 Limonite
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321025 Identify the reaction that does not take place in a blast furnace.

1 \(\mathrm{2 \mathrm{Fe}_{2} \mathrm{O}_{3}+3 \mathrm{C} \rightarrow 4 \mathrm{Fe}+3 \mathrm{CO}_{2}}\)
2 \(\mathrm{\mathrm{CO}_{2}+\mathrm{C} \rightarrow 2 \mathrm{CO}}\)
3 \(\mathrm{\mathrm{CaCO}_{3} \rightarrow \mathrm{CaO}+\mathrm{CO}_{2}}\)
4 \(\mathrm{\mathrm{CaO}+\mathrm{SiO}_{2} \rightarrow \mathrm{CaSiO}_{3}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321026 Purest form of iron is

1 pig iron
2 wrought iron
3 cast iron
4 steel.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321027 The purest form of commercial iron is

1 Cast iron
2 Scarp iron and pig iron
3 Pig iron
4 Wrought iron
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321024 The purest form of iron is prepared by oxidising impurities from cast iron in a reverberatory furnace. Which iron ore is used to line the furnace?

1 Iron pyrites
2 Magnetitie
3 Haematite
4 Limonite
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321025 Identify the reaction that does not take place in a blast furnace.

1 \(\mathrm{2 \mathrm{Fe}_{2} \mathrm{O}_{3}+3 \mathrm{C} \rightarrow 4 \mathrm{Fe}+3 \mathrm{CO}_{2}}\)
2 \(\mathrm{\mathrm{CO}_{2}+\mathrm{C} \rightarrow 2 \mathrm{CO}}\)
3 \(\mathrm{\mathrm{CaCO}_{3} \rightarrow \mathrm{CaO}+\mathrm{CO}_{2}}\)
4 \(\mathrm{\mathrm{CaO}+\mathrm{SiO}_{2} \rightarrow \mathrm{CaSiO}_{3}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321026 Purest form of iron is

1 pig iron
2 wrought iron
3 cast iron
4 steel.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321027 The purest form of commercial iron is

1 Cast iron
2 Scarp iron and pig iron
3 Pig iron
4 Wrought iron
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321024 The purest form of iron is prepared by oxidising impurities from cast iron in a reverberatory furnace. Which iron ore is used to line the furnace?

1 Iron pyrites
2 Magnetitie
3 Haematite
4 Limonite
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321025 Identify the reaction that does not take place in a blast furnace.

1 \(\mathrm{2 \mathrm{Fe}_{2} \mathrm{O}_{3}+3 \mathrm{C} \rightarrow 4 \mathrm{Fe}+3 \mathrm{CO}_{2}}\)
2 \(\mathrm{\mathrm{CO}_{2}+\mathrm{C} \rightarrow 2 \mathrm{CO}}\)
3 \(\mathrm{\mathrm{CaCO}_{3} \rightarrow \mathrm{CaO}+\mathrm{CO}_{2}}\)
4 \(\mathrm{\mathrm{CaO}+\mathrm{SiO}_{2} \rightarrow \mathrm{CaSiO}_{3}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321026 Purest form of iron is

1 pig iron
2 wrought iron
3 cast iron
4 steel.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321027 The purest form of commercial iron is

1 Cast iron
2 Scarp iron and pig iron
3 Pig iron
4 Wrought iron
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321024 The purest form of iron is prepared by oxidising impurities from cast iron in a reverberatory furnace. Which iron ore is used to line the furnace?

1 Iron pyrites
2 Magnetitie
3 Haematite
4 Limonite
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321025 Identify the reaction that does not take place in a blast furnace.

1 \(\mathrm{2 \mathrm{Fe}_{2} \mathrm{O}_{3}+3 \mathrm{C} \rightarrow 4 \mathrm{Fe}+3 \mathrm{CO}_{2}}\)
2 \(\mathrm{\mathrm{CO}_{2}+\mathrm{C} \rightarrow 2 \mathrm{CO}}\)
3 \(\mathrm{\mathrm{CaCO}_{3} \rightarrow \mathrm{CaO}+\mathrm{CO}_{2}}\)
4 \(\mathrm{\mathrm{CaO}+\mathrm{SiO}_{2} \rightarrow \mathrm{CaSiO}_{3}}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321026 Purest form of iron is

1 pig iron
2 wrought iron
3 cast iron
4 steel.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

321027 The purest form of commercial iron is

1 Cast iron
2 Scarp iron and pig iron
3 Pig iron
4 Wrought iron