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Cambridge IGCSE Chemistry - 0620 - Supplement Paper 2 2014 Summer Zone 2
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Topic: CH14 - MAKING USE OF METALS
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CH14 - MAKING USE OF METALS
Which process is involved in the extraction of zinc from zinc blende?
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Stainless steel is an alloy of iron and other metals. It is strong and does not rust but it costs much more than normal steel.What is not made from st...
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Iron from a blast furnace is treated with oxygen and with calcium oxide to make steel.Which substances in the iron are removed?[Table_1]
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Why is cryolite used during the extraction of aluminium by electrolysis?
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Why is argon gas used to fill electric lamps?
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CH14 - MAKING USE OF METALS
Impurities in iron obtained from the blast furnace include carbon, phosphorus, and silicon. Which impurities are removed from the molten iron as gase...
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CH14 - MAKING USE OF METALS
Which statement about the industrial extraction of aluminium from aluminium oxide is correct?
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The alloy brass is a mixture of copper and another metal. Brass is used to make the pins of electrical plugs. Copper is used to make electrical wiring...
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Aluminium is extracted by electrolysis of a mixture of aluminium oxide and cryolite. Which statement is not correct?
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