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Showing posts from July, 2016

Stainless Steel

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Steel and Iron

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Q: Why there is less rusting in steel and stain steel as compare to iron?

Ans. Steel and stainless steel are Alloys.

Corrosion of Aluminum

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Q: Why the corrosion of Aluminum does not occur?

Corrosion

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Q: Why corrosion occur?

Ans: This is due to the electropositive nature (more oxidation potential) of metals. When any element i.e. iron loses its electrons in the presence of Oxygen and Water, then there a reaction occurs and oxide is formed on the surface of iron (rusting). The pure metal is used up in this process. This deterioration (eating away) of metal surface is known as corrosion.


Extra INFORMATION

Oxidation state of oxygen in OF2

Q: Oxygen has -2 oxidation state in all its compounds but it is +2 inOF2. Why?

Electrolytic Cells

Q: Why Electrolytic cells need Energy?