75847
Pregunta 1
Pregunta
What are the electrodes made out of for the manufacture of aluminium by electrolysis?
Respuesta
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Anode - Aluminium Cathode - Aluminium
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Anode - Aluminium Cathode - Graphite
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Anode - Graphite Cathode - Aluminium
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Anode - Graphite Cathode - Graphite
Pregunta 2
Pregunta
Impure iron + Oxygen + Element X => Steel
What is element X?
Respuesta
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Calcium
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Carbon
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Nitrogen
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Sulphur
Pregunta 3
Pregunta
Which statement is correct?
Respuesta
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Aluminium is used in aircraft wings as it has a low density
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Aluminium is used in food containers as it resists corrosion
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Mild steel is used in car bodies as it has a high density
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Stainless steel is used in cutlery as it does not rust
Pregunta 4
Pregunta
What are the conditions used to make steel from the iron produced in a blast furnace?
Respuesta
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Calcium oxide (lime) + Oxygen + Heat
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Calcium oxide (lime) + Oxygen + NO Heat
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NO Calcium oxide (lime) + Oxygen + Heat
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NO Calcium oxide (lime) + Oxygen + NO Heat
Pregunta 5
Pregunta
Which object is least likely to contain aluminium?
Respuesta
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Bicycle frame
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Hammer
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Saucepan
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Aeroplane body
Pregunta 6
Pregunta
Which statement about the extraction of iron from its ore is correct?
Respuesta
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Iron is more difficult to extract than zinc
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Iron is more difficult to extract than copper
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Iron is easy to extract because it is a transition metal
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Iron cannot be extracted by the reduction of crabon
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