Applying a layer of paint on an iron surface helps prevent corrosion primarily by:
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A.
increasing the strength of iron
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B.
preventing exposure to air and moisture
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C.
reacting with iron
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D.
absorbing oxygen
Correct Answer:
B. preventing exposure to air and moisture
Explanation:
Applying a layer of paint to an iron surface prevents corrosion by acting as a protective barrier that seals the metal away from the environment. Corrosion, or rusting, is a chemical process that occurs when iron is exposed to both oxygen and moisture in the air. By covering the iron surface, the paint prevents these external elements from coming into direct contact with the metal, thereby inhibiting the oxidation reaction. Consequently, the correct answer is that it prevents exposure to air and moisture.
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