Question

Which of the following is one way to prevent the corrosion of iron? 

     A. 

Add carbon to the iron. B.  Paint exposed iron parts with protective paint. C.  Let the iron develop a natural coat of carbonate. D.  Protect the iron from polluted air

Answer 1

B: Painting over a metal surface in order to prevent rust is known as rust proofing and it works by preventing oxygen and water from reaching the metal surface thus preventing a redox reaction which would result in rusting.