1) Write down the difference between dry corrosion and wet corrosion.
2) What do you mean by corrosion inhibitors? Write down suitable examples.
3) Describe why the iron pipes doesn’t rust when connected to zinc but rusts rapidly when it contact with copper.
4) What do you mean by galvanic corrosion? Describe how it is prevented in detail?
5) Steel screw in the brass marine hardware corrodes. Describe in detail.
6) Bolt and nut made of same metal is chosen in practice. Describe why?
7) What kind of corrosion occurs in following cases: Wire fence, Riveted joints and Iron tanks used for storing water?
8) Write down the requisites of the good paint.
9) Describe the function of a pigment in paint? Write down two suitable examples.
10) Describe why Tinning is better than Galvanizing.
11) What do you mean by anodizing?
12) Describe galvanizing and tinning in detail.
13) Write down differences between electroplating and electroless plating.