1.

Write short note on the following:Galvanizing.

Answer»

(1) The process of coating a thin layer of zinc on iron or steel is called galvanization.

(2) In this method corrosion of zinc occurs first because zinc is more electropositive than iron. After a few years zinc layer goes away and the iron layer gets exposed and starts rusting.

(3) In galvanization an iron object is dipped into molten zinc. A thin layer of zinc is formed all over the iron object. 

Examples: Shiny iron nails, pin, iron pipes.


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