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One iron nail is kept in a dry, airtight bottle and another nail is kept in moist open air. Which nail will rust faster?

Answer and explanation

Correct answer: Nail kept in moist open air

Rusting of iron requires both oxygen and water (moisture). A nail in moist open air has a continuous supply of oxygen from air and water from moisture, so it rusts faster. In a dry, airtight bottle, moisture is absent and the oxygen supply is limited; therefore, rusting is very slow or does not occur.

Related tags

ScienceClass10Chemical ReactionsRustingIronCorrosionMoisture

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