Why does an iron object rust less when kept in an airtight, dry container?
Answer and explanation
Correct answer: Contact of iron with oxygen and water vapour is reduced.
Rusting is the oxidation of iron in the presence of oxygen and water. An airtight, dry container greatly reduces the access of oxygen and water vapour to the iron, so the rate of rusting decreases. Option B is incorrect because iron does not lose its reactivity; the conditions required for rusting are simply reduced.
Frequently asked questions
What is the correct answer to this question?
Contact of iron with oxygen and water vapour is reduced.
Why is this the correct answer?
Rusting is the oxidation of iron in the presence of oxygen and water. An airtight, dry container greatly reduces the access of oxygen and water vapour to the iron, so the rate of rusting decreases. Option B is incorrect because iron does not lose its reactivity; the conditions required for rusting are simply reduced.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
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