Extraction of Metals Quiz

17 Questions

Quiz Description

The extraction of metals in chemistry is simply the process by which metals are gotten from their ores buried deep under the ground. The metal deposits are known as metal ores which are in varying abundances in the crust of the Earth. The metal ore is always very different from the finished metals that we see in bridges and buildings.

The extraction of metals plays a very vital role in every civilisation in that the extracted metals are used to make coins, farming tools, weapons for war, building tools and even used in the construction of buildings. These metals have changed the lives of millions over the world.

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1:

Which metal is added to aluminium to make a stronger alloy?


Correct
  • 1:
    chromium
  • 2:
    gold
  • 3:
    sodium
  • 4:
    magnesium
2:

Which of these metals should react with dilute hydrochloric acid, but very slowly?


<p>Which of these metals should react with dilute hydrochloric acid, but very slowly?</p>
Correct
  • 1:
    silver
  • 2:
    lead
  • 3:
    iron
  • 4:
    calcium
3:

Which metals is obtained from bauxite ore?


Correct
  • 1:
    copper
  • 2:
    iron
  • 3:
    gold
  • 4:
    aluminium
4:

Which of (1) - (5) represents where molten iron is tapped off?


<p>Which of (1) - (5) represents where molten iron is tapped off?</p>
Correct
  • 1:
    2
  • 2:
    3
  • 3:
    1
  • 4:
    4
5:

Which metal is less reactive than sodium but must be extracted using electrolysis of the molten ore?


Correct
  • 1:
    silver
  • 2:
    tin
  • 3:
    lead
  • 4:
    aluminium
6:

Stages in the extraction of iron in a blast furnace are described below after iron ore, coke and limestone have been added at the top, but not in the correct order. (1) carbon dioxide reacts with coke (carbon) to form carbon monoxide (2) limestone combines with acid impurities (3) hot air is blown into the furnace (4) carbon monoxide reacts with iron oxide to make iron (5) coke (carbon) burns to form carbon dioxide Which is the correct order of sequence for (1) to (5)?


Correct
  • 1:
    (3) (5) (4) (1) (2)
  • 2:
    (3) (5) (1) (4) (2)
  • 3:
    (5) (3) (1) (2) (4)
  • 4:
    (5) (1) (3) (2) (4)
7:

 Which metals is purified by electrolysis? 


Correct
  • 1:
    iron
  • 2:
    gold
  • 3:
    aluminium
  • 4:
    copper
8:

 Which is NOT a raw material in the blast furnace extraction of iron?  


Correct
  • 1:
    coke
  • 2:
    sandstone
  • 3:
    limestone
  • 4:
    haematite
9:

 Which reaction is causes the high temperature in a blast furnace? 


Correct
  • 1:
    carbon + oxygen ==> carbon dioxide
  • 2:
    iron(III) oxide + carbon monoxide ==> iron + carbon dioxide
  • 3:
    calcium carbonate + silicon dioxide ==> calcium silicate + carbon dioxide
  • 4:
    carbon dioxide + carbon ==> carbon monoxide
10:

 Which chemical change corresponds to a neutralisation? 


Correct
  • 1:
    calcium hydroxide reacts with acid waste gases from an industrial metal extraction process to form a harmless salt and water
  • 2:
    aluminium and oxygen are produced when an electric current is passed through molten aluminium oxide
  • 3:
    calcium carbonate forms calcium oxide and carbon dioxide in the blast furnace extraction of iron
  • 4:
    carbon monoxide reacts with iron oxide to form carbon dioxide in the blast furnace
11:

 The name of a common ore from which aluminium can be extracted is called? 


Correct
  • 1:
    charcoal
  • 2:
    cryolite
  • 3:
    bauxite
  • 4:
    haematite
12:

 The reactions in the blast furnace to produce iron are summarised by equations (1) to (4). The symbol equations may NOT be numerically balanced.
... (1) C + O2 ==> CO2
... (2) CO2 + C ==> CO
... (3) Fe2O3 + CO ==> Fe + CO2
... (4) CaCO3 + SiO2 ==> CaSiO3 + CO2
Which statement is TRUE? 


Correct
  • 1:
    in reaction (1) carbon is reduced
  • 2:
    in reaction (2) carbon dioxide is reduced
  • 3:
    in reaction (3) iron is oxidised
  • 4:
    in reaction (4) calcium carbonate is oxidised
13:

 Which reaction represents the iron ore reduction in a blast furnace? 


Correct
  • 1:
    carbon dioxide + carbon ==> carbon monoxide
  • 2:
    calcium carbonate + silicon dioxide ==> calcium silicate + carbon dioxide
  • 3:
    carbon + oxygen ==> carbon dioxide
  • 4:
    iron(III) oxide + carbon monoxide ==> iron + carbon dioxide
14:

  Ingots of aluminium from its electrolytic extraction can be stored outside in all weathers. Why do aluminium ingots not corrode away, despite aluminium being quite high in the reactivity series of metals? 


Correct
  • 1:
    it is not a transition metal like chromium
  • 2:
    aluminium has a particularly shiny surface
  • 3:
    aluminium will not react with oxygen
  • 4:
    aluminium is coated in an oxide layer
15:

 Which removes impurities from iron in the blast furnace extraction of iron? 


Correct
  • 1:
    air
  • 2:
    limestone
  • 3:
    haematite
  • 4:
    coke
16:

 The reactions in the blast furnace to produce iron are summarised by equations (1) to (4). The symbol equations may NOT be numerically balanced.
... (1) C + O2 ==> CO2
... (2) CO2 + C ==> CO
... (3) Fe2O3 + CO ==> Fe + CO2
... (4) CaCO3 + SiO2 ==> CaSiO3 + CO2
Which statement is TRUE? 


Correct
  • 1:
    in reaction (2) carbon is oxidised
  • 2:
    in reaction (1) carbon is reduced
  • 3:
    in reaction (4) calcium carbonate is reduced
  • 4:
    in reaction (3) carbon dioxide is oxidised
17:

 Which of these blast furnace reactions forms the 'slag'? 


Correct
  • 1:
    carbon dioxide + carbon ==> carbon monoxide
  • 2:
    calcium carbonate + silicon dioxide ==> calcium silicate + carbon dioxide
  • 3:
    carbon + oxygen ==> carbon dioxide
  • 4:
    iron(III) oxide + carbon monoxide ==> iron + carbon dioxide

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Extraction of Metals Quiz
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