Which common principle do painting and oiling use to prevent rusting?
Answer and explanation
Correct answer: Isolating the iron surface from air and moisture
Rusting requires iron to be in contact with oxygen and water or moisture. Paint and oil form a protective coating on the iron surface, so air and moisture cannot reach the metal. Therefore, option A is correct. Raising the temperature does not create a barrier between iron and oxygen or moisture.
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What is the correct answer to this question?
Isolating the iron surface from air and moisture
Why is this the correct answer?
Rusting requires iron to be in contact with oxygen and water or moisture. Paint and oil form a protective coating on the iron surface, so air and moisture cannot reach the metal. Therefore, option A is correct. Raising the temperature does not create a barrier between iron and oxygen or moisture.
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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