what is the name of iron ore?

• haematite

• chalcopyrite

• malachite

• argentite

What is the method of extraction for iron ore?

• electrolysis

• heat only in the blast furnace

• heat with carbon in the blast furnace

• photolysis

what must be added with iron ore in the blast furnace to start the extraction process ?

• coke and lime

• coke and lime water

• coke and lime stone

• coke only

what is the purpose of adding limestone while extracting iron ore?

• to remove water from iron ore

• to make pig iron

• to remove oxygen fro iron oxide

• to remove sand from iron ore

During iron extraction, calcium oxide will react with silicon dioxide in iron ore to from ______________.

• calcium oxide

• calcium chloride

• calcium silicate

• calcium dioxide

Metal X cannot react with water and acid. But it will react with oxygen to form a protective oxide layer. Which of the following metal is most likely to be metal X?

• calcium

• aluminium

• zinc

• copper

What is the name of aluminium ore ?

• bauxite

• magnitite

• aluminite

• galena

what is the chemical name of bauxite ?

• aluminium carbonate

• aluminium dioxide

• aluminium hydroxide

• aluminium oxide

What is the extraction method for bauxite ?

• blast furnace

• electrolysis

• heat only

• hydrolysis

which of the following metals have to be extracted by heating with carbon?

• zinc

• iron

• lead

• magnesium