Extraction of metals — Paper 2 · IGCSE Sciences - Co-ordinated (Double) 0654

22 Which element is used to extract some metals from their ores? A carbon B copper C iron D nitrogen

1 marks

Answer: A

This question in 0654/21 May/June 2017

22 Which metal is extracted from its ore by heating with carbon? A copper B magnesium C potassium D sodium

1 marks

Answer: A

This question in 0654/22 May/June 2017

22 In the blast furnace, which substance is added to make slag? A calcium carbonate B carbon dioxide C carbon monoxide D coke

1 marks

Answer: A

This question in 0654/21 Oct/Nov 2017

22 Which reaction does not occur in the blast furnace? A C + O2 → CO2 B C + CO2 → 2CO C 4Fe + 3O2 → 2Fe2O3 D Fe2O3 + 3CO → 2Fe + 3CO2

1 marks

Answer: C

This question in 0654/22 Oct/Nov 2017

22 Part of the reactivity series is shown. most reactive least reactive K Na Ca Zn Fe (H) Cu Which method is used to extract potassium from its ore? A electrolysis of the molten ore B electrolysis of the ore dissolved in water C heating the ore with hydrogen D heating the ore with carbon

1 marks

Answer: A

This question in 0654/21 Oct/Nov 2018

23 Which reaction does not occur in the blast furnace? A C + CO2 → 2CO B CaCO3 → CaO + CO2 C CaO + SiO2 → CaSiO3 D 2Fe + 3CO2 → Fe2O3 + 3CO

1 marks

Answer: D

This question in 0654/22 Oct/Nov 2018

24 Tin is extracted from cassiterite (tin oxide). The process involves two reactions. reaction 1 carbon + oxygen → carbon monoxide reaction 2 carbon monoxide + tin oxide → carbon dioxide + tin Which statement about the process is correct? A Carbon is higher than tin in the reactivity series. B Carbon monoxide is formed in reaction 1 by complete combustion. C Carbon monoxide is reduced in reaction 2. D Cassiterite is oxidised in reaction 2.

1 marks

Answer: A

This question in 0654/22 Oct/Nov 2019

25 Which statement about the Haber process is correct? A All of the raw materials are obtained from the air. B It requires a catalyst. C It uses a low pressure and a high temperature. D Sulfuric acid is produced in the process.

1 marks

Answer: B

This question in 0654/22 Feb/March 2021

23 Iron is extracted in the blast furnace. Which reactions are involved in removing acidic impurities as slag? 1 C + O2  CO2 2 C + CO2  2CO 3 Fe2O3 + 3CO  2Fe + 3CO2 4 CaCO3  CaO + CO2 5 CaO + SiO2  CaSiO3 A 1 and 2 only B 1, 2 and 3 C 3, 4 and 5 D 4 and 5 only

1 marks

Answer: D

This question in 0654/22 Feb/March 2022

22 Iron is extracted from hematite in the blast furnace. Why is limestone added to the furnace? A It decreases the melting point of the mixture. B It increases the temperature inside the furnace. C It produces calcium oxide which removes acidic impurities. D It produces carbon dioxide which reduces the hematite.

1 marks

Answer: C

This question in 0654/21 May/June 2022

20 The equations for reactions in the blast furnace are shown. 1 C + O2  CO2 2 CO2 + C  2CO 3 Fe2O3 + 3CO  2Fe + 3CO2 4 CaO + SiO2  CaSiO3 Which statement is correct? A In reaction 1, carbon is reduced. B In reaction 2, carbon dioxide is oxidised. C In reaction 3, carbon monoxide is oxidised. D In reaction 4, silicon dioxide is reduced.

1 marks

Answer: C

This question in 0654/22 Oct/Nov 2022

24 Which metal cannot be extracted from its ore by heating with carbon? A aluminium B copper C iron D zinc

1 marks

Answer: A

This question in 0654/22 Feb/March 2023

18 Which statement about the extraction of aluminium from its ore by electrolysis is correct? A Aluminium gains electrons from the anode. B Aluminium ions are oxidised at the cathode. C Aluminium ore is called cryolite. D Aluminium oxide is in the electrolyte.

1 marks

Answer: D

This question in 0654/22 May/June 2023

23 In the blast furnace, which substance is added to make slag? A calcium carbonate B carbon dioxide C carbon monoxide D coke

1 marks

Answer: A

This question in 0654/22 May/June 2023

23 Which metal can only be extracted from its ore using electrolysis? A calcium B copper C iron D zinc

1 marks

Answer: A

This question in 0654/23 Oct/Nov 2023

23 Which row identifies an ore of aluminium and the method of extraction of aluminium from its ore? ore method of extraction A bauxite electrolysis B bauxite reduction using carbon C hematite electrolysis D hematite reduction using carbon

1 marks

Answer: A

This question in 0654/23 May/June 2024

24 Which statement about the extraction of metals is correct? A Aluminium ore is called hematite. B Aluminium is extracted from its ore by heating with carbon. C Iron oxide is reduced to iron by heating with carbon monoxide. D Limestone is used to remove basic impurities in a blast furnace.

1 marks

Answer: C

This question in 0654/21 Oct/Nov 2024

23 The ore cassiterite contains tin dioxide. Tin is more reactive than copper but less reactive than iron. Which row shows the industrial method used to extract tin based on tin’s position in the reactivity series? using carbon in electrolysis a blast furnace A yes yes B yes no C no yes D no no

1 marks

Answer: B

This question in 0654/22 Feb/March 2025

21 Which statement describes what happens when calcium carbonate is added to the blast furnace during the extraction of iron? A It burns and provides heat. B It decomposes and calcium oxide is a product. C It reacts with silicon dioxide. D It reduces the iron ore.

1 marks

Answer: B

This question in 0654/22 May/June 2025

22 Which element is used to extract some metals from their ores? A carbon B copper C iron D nitrogen

1 marks

Answer: A

This question in 0654/23 May/June 2025