Which one of the following is correct?

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Rusting will take place in absence of water

Rusting will take place in absence of air

Rusting will not place in the presence of air and water

None of these

answer is D.

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Detailed Solution

Concept- Rusting is a common word for iron oxide and it takes place in the presence of air and moisture content. Iron is rusted when rust, a compound made of iron oxides, forms on the surface of iron objects or buildings.
This rust is created by a redox interaction between oxygen and iron in a water-containing environment, like highly humid air. The presence of water in the environment is the only factor that can cause iron to corrode. The main cause of rusting is exposure to rain. Water and oxygen are the two primary ingredients needed for rusting.
Hence, the correct answer is option 4.

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