Question

it is told that pure iron rusts slower than iron combined with other metals, they why do we make alloys to prevent rusting?

Answer 1

Answer:

This is the reason:

Iron rusts because it can be contacted by water-or the moisture in the air- and the metal takes the oxygen from the water forming iron oxide-rust. Paint or plating(like chrome plating) prevents the H2O molecules from reaching the surface of the metal so it can't get the oxygen.

Explanation:

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