75847
Questão 1
Questão
What are the electrodes made out of for the manufacture of aluminium by electrolysis?
Responda
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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
Questão 2
Questão
Impure iron + Oxygen + Element X => Steel
What is element X?
Responda
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Calcium
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Carbon
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Nitrogen
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Sulphur
Questão 3
Questão
Which statement is correct?
Responda
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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
Questão 4
Questão
What are the conditions used to make steel from the iron produced in a blast furnace?
Responda
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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
Questão 5
Questão
Which object is least likely to contain aluminium?
Responda
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Bicycle frame
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Hammer
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Saucepan
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Aeroplane body
Questão 6
Questão
Which statement about the extraction of iron from its ore is correct?
Responda
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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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