Which of the following methods does not help protect iron from rusting?
Answer and explanation
Correct answer: Leaving iron exposed to moist air
Rusting requires iron to be in contact with both oxygen and moisture. Leaving iron exposed to moist air increases this contact and therefore promotes rusting. In contrast, paint and oil form protective barriers on iron, while galvanising coats iron with zinc to protect it from rusting.
Frequently asked questions
What is the correct answer to this question?
Leaving iron exposed to moist air
Why is this the correct answer?
Rusting requires iron to be in contact with both oxygen and moisture. Leaving iron exposed to moist air increases this contact and therefore promotes rusting. In contrast, paint and oil form protective barriers on iron, while galvanising coats iron with zinc to protect it from rusting.
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.
