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BECE Science 2016 Paper
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© africaexams.com
Question : 18
Total: 40
Which of the following gases is involved in the rusting of iron?
Hydrogen
Oxygen
Nitrogen
Carbon dioxide
Validate
Solution:
Concept:
Rusting of iron requires oxygen and moisture.
Explanation:
Iron rusts when it reacts with oxygen in the presence of water, forming hydrated iron(III) oxide.
Therefore, the gas involved in rusting is oxygen.
Answer:
B. Oxygen
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