Why metal rust ? How they can be restored.
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That old wrought iron fence or steel gutter may look terrible, but with the right preparation and primer, most rusty metal surfaces can be restored to almost new. The first step is to clean off loose rust and flaking paint and then apply a rust-inhibitive primer. ... Once done, you can paint over rust.
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Q. Why metal rust ? How they can be restored.
=> Metal is rusted becausa of coming in contact with oxygen.
Prevented by the process known as Galvanisation.
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