Corrosion of metals — Paper 1 · IGCSE Science - Combined 0653

20 The diagram shows a razor used in shaving. Why is the razor made of stainless steel and not pure iron? A It is a compound but iron is an element. B It is easier to polish than is iron. C It is more brittle than iron. D It is more resistant to rusting than is iron.

1 marks

Answer: D

This question in 0653/11 May/June 2008

19 The diagram shows apparatus in which gas P can be passed through liquid X and then over iron filings. gas P iron filings liquid X Four experiments, each using a different gas P and a different liquid X, are carried out. In which experiment do the iron filings rust? gas P liquid X A nitrogen concentrated sulfuric acid (a drying agent) B nitrogen water C oxygen concentrated sulfuric acid (a drying agent) D oxygen water

1 marks

Answer: D

This question in 0653/11 May/June 2009

18 The diagram shows an experiment on the rusting of iron. tap tap gas P X iron filings oil The flask is filled with gas P. The taps are closed and the apparatus is left for a week. The experiment is repeated with four different gases. What happens to the oil level at X? gas P oil level at X A damp nitrogen rises B damp oxygen falls C dry nitrogen falls D dry oxygen rises

1 marks

Answer: B

This question in 0653/12 May/June 2013

18 The diagram shows an experiment on the rusting of iron. tap tap gas P X iron filings oil The flask is filled with gas P. The taps are closed and the apparatus is left for a week. The experiment is repeated with four different gases. What happens to the oil level at X? gas P oil level at X A damp nitrogen rises B damp oxygen falls C dry nitrogen falls D dry oxygen rises

1 marks

Answer: B

This question in 0653/13 May/June 2013

17 In which test-tube does rusting occur most quickly? A B C D distilled air water tap water steel nail iron nail steel nail iron nail

1 marks

Answer: D

This question in 0653/11 Oct/Nov 2013

17 In which test-tube does rusting occur most quickly? A B C D distilled air water tap water steel nail iron nail steel nail iron nail

1 marks

Answer: D

This question in 0653/12 Oct/Nov 2013

17 In which test-tube does rusting occur most quickly? A B C D distilled air water tap water steel nail iron nail steel nail iron nail

1 marks

Answer: D

This question in 0653/13 Oct/Nov 2013

26 In which test-tube does a chemical change take place most quickly? A B C D air air oil oil boiled water boiled water tap water tap water iron nails copper nails copper nails iron nails

1 marks

Answer: D

This question in 0653/11 May/June 2015

27 lron rusts when it reacts with oxygen and water. Which substances are used to prevent rusting? oil paint zinc A v v v B v v x Cc v x v D x v v key v=yes X =no

1 marks

Answer: A

This question in 0653/12 May/June 2015

26 Which process does not produce carbon dioxide? A combustion of coal B reaction of calcium carbonate with hydrochloric acid C respiration D rusting of iron

1 marks

Answer: D

This question in 0653/13 May/June 2015

26 Which statement about the rusting of iron is correct? A Iron becomes lighter when it rusts. B Iron is reduced when it rusts. C Rusting is a reaction involving iron, oxygen and water. D Rusting is a reaction involving iron and water only.

1 marks

Answer: C

This question in 0653/12 Feb/March 2018

26 Which two substances are required for iron to rust? A nitrogen and oxygen B nitrogen and water C oxygen and water D salt and oxygen

1 marks

Answer: C

This question in 0653/13 Oct/Nov 2018

25 An iron nail is left for a few days in a sealed test-tube containing air and water. air iron nail water Which change in the air in the test-tube occurs as the iron nail rusts? A The amount of carbon dioxide decreases. B The amount of carbon dioxide increases. C The amount of nitrogen increases. D The amount of oxygen decreases.

1 marks

Answer: D

This question in 0653/11 May/June 2021

25 An experiment is set up to show the effect of air and water on iron. tube X tube Y iron wire iron wire coated with grease air air water water The experiment is left for one week. What happens to the water level in each tube? tube X tube Y A falls falls B no change rises C rises rises D rises no change

1 marks

Answer: D

This question in 0653/12 May/June 2021

25 An experiment is set up to investigate the rusting of iron nails. In which test-tube does the iron nail not rust because a barrier method of rust prevention is used? A B C D bung oil air boiled water water water iron nail iron nail iron nail painted drying iron nail agent

1 marks

Answer: D

This question in 0653/13 May/June 2021

26 A student measures the masses of three unpainted and three painted iron nails. The student places the nails into separate beakers of water. water water unpainted painted iron nails iron nails After one week, the student removes the nails from the beakers, dries them and measures the masses again. Which row about the masses of the iron nails is correct? mass of mass of unpainted iron nails painted iron nails A decreased decreased B decreased unchanged C increased increased D increased unchanged

1 marks

Answer: D

This question in 0653/11 Oct/Nov 2021

26 A large quantity of damp iron filings is added to clean air in a sealed container. The container is left for several weeks. The composition of the air in the container changes. Which gas decreases in composition? A argon B carbon dioxide C nitrogen D oxygen

1 marks

Answer: D

This question in 0653/13 May/June 2022

21 An experiment is set up to investigate the rusting of iron nails. Which test-tube shows a barrier method of rust prevention? A B C D water water iron nail iron nail iron nail painted drying iron nail agent

1 marks

Answer: D

This question in 0653/12 Feb/March 2025

23 Iron nails are placed in four test-tubes under different conditions and left for two weeks. In which test-tube does the iron nail show the least amount of rust? A B C D oil boiled boiled tap water tap water moist air tap water (oxygen (oxygen removed) removed)

1 marks

Answer: D

This question in 0653/13 May/June 2025