12th Class Chemistry Electrochemistry / विद्युत् रसायन Question Bank 12th CBSE Chemistry Electrochemistry

  • question_answer
      What is barrier protection of metal?    

    Answer:

      The processes in which iron surface is kept away from the atmosphere. By painting the surface. By coating the surface with thin film of oil or grease. By electroplating iron with some non-corrosive metal such as nickel, chromium, copper. Using layer of anti-rust solution e.g. b is phenol.  


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