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- 1. Multiple Choice
Iron is extracted from its ore (hematite) in the blast furnace. Which gas is produced as a waste product?
Carbon Dioxide
Hydrogen
Nitrogen
Oxygen
- 2. Multiple Choice
Iron is extracted from hematite in a blast furnace. Which reaction increases the temperature in the blast furnace to over 1500°C?
calcium carbonate → calcium oxide + carbon dioxide
calcium oxide + silicon dioxide → calcium silicate
carbon + oxygen → carbon dioxide
carbon dioxide + carbon → carbon monoxide
- 3. Multiple Choice
Four reactions that take place in the blast furnace to produce iron are shown. Which reaction is used to keep the furnace hot?
C + O2 → CO2
CO2 + C → 2CO
Fe2O3 + 3C → 2Fe + 3CO
Fe2O3 + 3CO → 2Fe + 3CO2
- 4. Multiple Choice
Which substance is not involved in the extraction of iron from hematite?
Carbon
Carbon Monoxide
Calcium Carbonate
Nitrogen
- 5. Multiple Choice
Which statement is incorrect?
Carbon dioxide is a waste product in the extraction of iron.
Carbon monoxide is a reducing agent.
The extraction of iron from hematite involves reduction.
When iron is converted into steel, oxygen is used to oxidise the iron.
- 6. Multiple Choice
Iron is extracted from its ore in a Blast Furnace. Hematite, coke, limestone and hot air are added to the furnace. Which explanation is not correct?
Coke burns and produces a high temperature.
Hematite is the ore containing the iron as iron oxide.
Hot air provides the oxygen for the burning.
Limestone reduces the iron oxide to iron.
- 7. Multiple Choice
Which statement about the extraction of iron from its ore is correct?
Iron is more difficult to extract than zinc.
Iron is more difficult to extract than copper.
Iron is easy to extract because it is a transition metal.
Iron cannot be extracted by reduction with carbon.
- 8. Multiple Choice
Many metals are extracted from their ores by heating the metal oxide with carbon. Which metal cannot be extracted using this method?
Aluminium
Copper
Iron
Zinc
- 9. Multiple Choice
Some metals react readily with dilute hydrochloric acid. Some metals can be extracted by heating their oxides with carbon. For which metal are both statements correct?
Calcium
Copper
Iron
Magnesium
- 10. Multiple Choice
1 Which statement about the uses of metals is correct?
Aluminium is used in the manufacture of aircraft because of its strength and high density.
Copper is used in electrical wiring because of its strength and high density
Mild steel is used in the manufacture of car bodies because of its strength and resistance to corrosion
Stainless steel is used in the construction of chemical plant because of its strength and resistance to corrosion.
- 11. Multiple Choice
Copper is a transition element used to make saucepans.
Which property is not correct for copper?
good conductor of heat
insoluble in water
low melting point
malleable (can be hammered into shape)
- 12. Multiple Choice
Which two elements make up mild steel?
aluminium and magnesium
copper and zinc
iron and carbon
tin and lead
- 13. Multiple Choice
Which conditions are necessary to make mild steel from iron?
add calcium oxide and blow oxygen through it
heat with calcium oxide
heat with carbon and limestone
heat with nickel and chromium
- 14. Multiple Choice
Which statement is not correct?
Aluminium is used in food containers because of its resistance to corrosion.
Aluminium is used in the manufacture of aircraft because of its strength and low density.
Mild steel is used in car bodies because of its strength and low density.
Stainless steel is used in chemical plant because of its strength and resistance to corrosion.
- 15. Multiple Choice
Which statement about the uses of aluminium, mild steel and stainless steel is correct?
Aluminium is used for food containers as it has a high density.
Mild steel is used for car bodies as it is resistant to corrosion.
Stainless steel is used for aircraft bodies as it is strong.
Stainless steel is used for cutlery as it is resistant to corrosion.
- 16. Multiple Choice
Which object is least likely to contain aluminium?
a bicycle frame
a hammer
a saucepan
an aeroplane body
- 17. Multiple Choice
Duralumin is an alloy. It contains aluminium, copper and magnesium. It has many uses including the manufacture of cooking utensils and ships. Which statement about duralumin and its properties is correct?
It is a good conductor of electricity.
It is brittle.
It is soluble in water.
The aluminium, copper and magnesium are chemically combined.
- 18. Multiple Choice
Which statement about the uses of metals is correct?
Aluminium is used in the manufacture of aircraft as it has a high density.
Aluminium is used to make food containers as it conducts electricity.
Stainless steel for cutlery is made by adding other elements to iron.
Stainless steel is used to make chemical reactors as it corrodes readily.
- 19. Multiple Choice
Which statement is true for all metals?
Their atoms lose one or more electrons when they react.
They are brittle.
They do not conduct electricity when solid.
They melt at low temperatures when they are heated.
- 20. Multiple Choice
Pure metals conduct electricity and can be hammered into different shapes. Why are metals sometimes used as alloys?
Alloys are cheaper than the metals they are made from.
Alloys are easier to hammer into different shapes.
Alloys are harder and keep their shape better.
Alloys conduct electricity better.
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