Iron Extraction

Which gas is produced as a waste product when iron is extracted from its ore in the blast furnace?

• Carbon dioxide
• Hydrogen
• Nitrogen
• Oxygen

In the blast furnace, limestone is added to...

• Create more heat
• Turn iron oxide into pure iron
• Remove acidic impurities

Hot gases are released from the blast furnace at the...

• Bottom of the furnace
• Top of the furnace
• Middle of the furnace
• No hot gases are released

In the blast furnace, Hot air is added to the...

• Top of the furnace
• Middle of the furnace
• Bottom of the furnace

Which reaction is used to keep the furnace hot?

• CO₂ + C -> 2CO

• C + O₂ -> CO₂

• Fe₂O₃ + 3C -> 2Fe + 3CO

• C + O₂ -> CO

Tags

NGSS.HS-PS3-4

Iron is made by burning its ore, hematite. Hematite contains silica. What reacts with this impurity to remove it?

• Carbon
• Carbon Dioxide
• Silicon dioxide
• Calcium Oxide

Which substance is not involved in the extraction of iron from hematite?

• Carbon Monoxide
• Carbon
• Nitrogen
• None of the above

What type of reaction is C + CO --> CO₂

• Redox

• Acid Base

• Thermial Decomposition

What type of reaction is CaCO₃ --> CaO + CO₂

• Redox

• Acid Base

• Thermal Decomposition

What type of reaction is CaO + SiO₂ --> CaSiO₃

• Redox

• Acid Base

• Thermal Decomposition