Why does a brand new bicycle have shining handlebar and wheel rims? What will happen if these are accidentally scratched?

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Solution

As they are electroplated by nickel which is a shiny metal, handle bars and wheel rims of a brand new bicycle shines. If they are scratched accidentally, the electroplated nickel would be removed out resulting in the show of real metal usually iron or aluminium which is later exposed to air and starts corrosion.

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