extraction of iron

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

• A
• B
• C
• D

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

How would you best extract iron from haematite (iron ore)?

• reduction by carbon
• electrolysis
• decomposition
• oxidation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5