Chemistry 5070 · O Level
Extraction of metals
61 practice questions on Extraction of metals, with worked solutions and instant marking.
The reaction between aluminium and chromium(III) oxide is shown below. $\text{aluminium} + \text{chromium(III) oxide} \rightarrow \text{chromium} + \text{aluminium oxide}$ Which statements are correct?
May/June 2015
Iron(III) oxide may be reduced to iron by carbon. Which other element is able to reduce iron(III) oxide to iron?
May/June 2015
Which metal must be obtained from its ore by electrolysis?
May/June 2015
During the extraction of iron from its ore in the blast furnace, limestone is added. What is the purpose of the limestone?
May/June 2015
Molybdenum is a transition element. It is used to produce steel that is very hard. Molybdenum can be manufactured by heating molybdenum(VI) oxide, $\text{MoO}_3$, together with aluminium.
May/June 2015
The extraction of iron from haematite takes place in the blast furnace. Which other raw material is introduced for this extraction?
May/June 2016
By roasting with powdered iron, which oxide is reduced to the metal?
May/June 2016
During the last stage of extracting metal X, the reaction is given by the equation: $\text{X}_2\text{O}_3 + 3\text{CO} \rightarrow 2\text{X} + 3\text{CO}_2$. Which element is X?
May/June 2016
Aluminium is obtained from aluminium oxide using electrolysis. Which statement about this electrolysis is correct?
May/June 2016
Which two substances are taken out from the base of a blast furnace?
May/June 2017
Some metals and the compounds found in their ores are shown here. Which type of reaction takes place when each of these metals is extracted from its ore?
May/June 2017
Which two substances are drawn off from the base of a blast furnace?
May/June 2017
The diagram illustrates apparatus that may be used to extract aluminium from its ore. What are $J$, $K$ and $L$?
May/June 2018
Iron is extracted in the blast furnace from haematite ore. Which process occurs in the blast furnace?
May/June 2018
The diagram illustrates apparatus that can be used to obtain aluminium from its ore. What are J, K and L?
May/June 2018
Iron is produced in the blast furnace from the ore haematite. What process occurs in the blast furnace?
May/June 2018
Copper pyrites is an ore that contains copper compounds. Among the compounds present in the ore is $\text{CuFeS}_2$.
May/June 2018
Sphalerite is an ore that contains zinc compounds. One compound present in the ore is $\text{ZnS}$.
May/June 2018
Tin is more reactive than lead but less reactive than iron. Which extraction method would be most appropriate for obtaining tin from its ore?
May/June 2021
Which reactions occur when aluminium is extracted from aluminium oxide using carbon electrodes?
May/June 2021
Three true facts about aluminium are given below. 1 Aluminium is the most abundant metal in the Earth's crust. 2 It is expensive to obtain aluminium from its ore, bauxite. 3 The world's supply of bauxite is limited. Which of these statements give reasons why aluminium ought to be recycled?
May/June 2021
Iron is obtained from the ore haematite in a blast furnace. Which statement about this extraction method is correct?
May/June 2021
Which statement is correct about how aluminium is prepared and about its properties?
May/June 2021
Iron pyrite, $\text{FeS}_2$, is an iron ore. On heating in air, $\text{FeS}_2$ gives iron(III) oxide and sulfur dioxide.
May/June 2021
The following types of chemical reaction are shown. Which of these reaction types take place in a blast furnace during the extraction of iron?
May/June 2022
Aluminium belongs to Group III in the Periodic Table.
May/June 2022
Three statements about aluminium extraction are listed below. 1 The electrolyte consists of aluminium oxide dissolved in molten cryolite. 2 Carbon is used for both the cathode and the anode. 3 Carbon dioxide is released at the cathode. Which of these statements are correct?
May/June 2023
Which reaction occurs in the blast furnace?
May/June 2024
In a blast furnace, iron is obtained from the ore hematite. Which statement about this extraction process is correct?
May/June 2025
The iron(III) oxide placed in a blast furnace includes the impurity silicon(IV) oxide, $\text{SiO}_2$. Which reaction is used to remove the silicon(IV) oxide?
May/June 2025
Iron is made in the blast furnace. Which statement about this process is correct?
Oct/Nov 2015
Iron is extracted in the blast furnace from the ore haematite. Which reaction occurs in the blast furnace?
Oct/Nov 2015
Iron is obtained in a blast furnace.
Oct/Nov 2015
The diagram illustrates the equipment used to obtain aluminium from aluminium oxide. Which statement about this process is correct?
Oct/Nov 2016
The diagram illustrates the apparatus used to obtain aluminium from aluminium oxide. Which statement about this process is correct?
Oct/Nov 2016
The illustration shows how the atoms are arranged in a metal.
Oct/Nov 2017
The sequence below places metal X in the reactivity series of metals: Na Al Fe X Cu Ag. Which procedures could be used to extract metal X?
Oct/Nov 2018
An earlier industrial method for extracting aluminium used large amounts of sodium to change aluminium ions into aluminium atoms. The present aluminium extraction process makes use of electrolysis. Which statements are correct?
Oct/Nov 2018
A reactivity series for some metals is shown, with two gaps marked $X$ and $Y$. Which row gives the correct metals $X$ and $Y$ and the extraction method used to obtain $Y$ from its ore?
Oct/Nov 2018
Tin is a metal that lies in the reactivity series between iron and lead. Which method is used to extract tin from its ores?
Oct/Nov 2019
Aluminium is obtained from aluminium oxide using electrolysis. Which statement about this electrolysis is correct?
Oct/Nov 2019
Which metal is most likely to be obtained from its molten chloride through electrolysis?
Oct/Nov 2019
Which metal can be extracted from its oxide using either carbon or hydrogen?
Oct/Nov 2019
Iron is obtained from its ore in a blast furnace. Coke and limestone are also put into the blast furnace. What is the role of the limestone?
Oct/Nov 2019
Aluminium is obtained from aluminium oxide using electrolysis. Which of the following statements about this electrolysis is correct?
Oct/Nov 2019
Steel is made by passing oxygen through molten iron that contains impurities. A student gives two possible explanations for why this is done. 1. Some of the carbon in the impure iron is removed by the oxygen. 2. Iron(II) ions are oxidised to iron(III) ions by the oxygen. Which of these explanations are correct?
Oct/Nov 2019
Iron is obtained from haematite in a blast furnace. Coke and limestone are put into the blast furnace. What does the limestone do?
Oct/Nov 2020
Aluminium is obtained by means of the electrolysis of molten aluminium oxide.
Oct/Nov 2020
In a blast furnace, iron is obtained from iron ore by using coke (carbon) and limestone.
Oct/Nov 2020
Metal X is above zinc in the reactivity series but below sodium. Which method would be most suitable for extracting metal X from its ore?
Oct/Nov 2021
Which of the following statements about extracting metals from their ores are correct?
Oct/Nov 2021
Iron is produced in the blast furnace from the ore haematite. Which of the following statements is correct?
Oct/Nov 2022
Iron is extracted in a blast furnace from the ore haematite. Which statement is correct?
Oct/Nov 2022
This question concerns metals and metal compounds.
Oct/Nov 2022
This question concerns metals and metal compounds.
Oct/Nov 2022
The metals below, together with the compounds found in their ores, are listed. metal: Al, Ca, Pb, Na, Fe, Mg compound present in ore: $\text{Al}_2\text{O}_3$, $\text{CaCO}_3$, $\text{PbS}$, $\text{NaCl}$, $\text{Fe}_2\text{O}_3$, $\text{MgCO}_3$ What kind of reaction occurs when each of these metals is extracted from its ore?
Oct/Nov 2023
The list indicates where metal X sits in the reactivity series of metals. Na Al Fe X Cu Ag Which methods may be used to extract metal X? 1 electrolysis of the solid metal oxide 2 heating the metal oxide with carbon 3 heating the metal oxide with copper
Oct/Nov 2023
The equations for three reactions are shown below. 1 $2\text{O}^{2-} \rightarrow \text{O}_2 + 4\text{e}^-$ 2 $\text{C} + \text{O}_2 \rightarrow \text{CO}_2$ 3 $\text{CaO} + \text{SiO}_2 \rightarrow \text{CaSiO}_3$ These reactions occur during the extraction of metals. Which row is the correct one?
Oct/Nov 2024
Iron is obtained in a blast furnace by reducing iron(III) oxide with carbon monoxide. $\text{Fe}_2\text{O}_3 + 3\text{CO} \rightarrow 2\text{Fe} + 3\text{CO}_2$
Oct/Nov 2024
Iron is obtained in the blast furnace by reducing iron(III) oxide, $\text{Fe}_2\text{O}_3$. The overall process can be divided into three stages.
Oct/Nov 2024
Which statement concerning the extraction of iron from hematite in the blast furnace is correct?
Oct/Nov 2025