The process of coating Zn over Fe is kn...

The process of coating Zn over Fe is known is

Cathodic protection

Galvanization

Metallurgy

Tinning

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The process ofcorrosion ofiron is known as rusting. Rust appears to be a hydrated ferricoxide Fe_2O_3, xH_2O, Both O_2 & H_2O are required for rusting. Iron can be protected from the rusting by use of following compounds. i) Applying paints, lacquers and enamells on the surface ofiron ii) By forming a firm and coherent protective coating of ferroroferric oxide. This is done by passing steam over hot iron iii) By coating a thin film of Zinc, Tin, Nickel, chromium, aluminium etc, on the surface of iron If plated with Zinc, the reaction of products of Zinc with O_2 and H_2O form a coating which sticks to the surface and there by protects iron Zinc protects iron from corrosion because

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BEYOND PUBLICATION-PRINCIPLES OF METALLURGY-EXERCISE

The reactivity of metals Al, Ag and Cu increase in the order of
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The second most abundant metal in the earth's crust is
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The process of coating Zn over Fe is known is
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Identify an ore containing sulphur in it.
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Which of the following is an amphoteric oxide ?
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Which is not a sulphide ore of metal ?
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Which of the following alloys does not contain copper
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Which of the following is the least abundant metal in earth's crust ?
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A mineral is called ore if…….
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Concentration by forth floatation is applicable for which of the follo...
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Specific gravity of slag is always :
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Polling process is employed for the removal of
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Highly electropositive metals can not he extracted by carbon reduction...
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Tamishing of silver is due to the presence of this gas in air……..
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Pyrochemical processes in metallurgy are carried out in structure call...
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The following metal is obtained by the auto reduction of its sulphide ...
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Name the common elements present in the anode mud in the eletrolytic r...
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Rusting of iron takes place in
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The principle behind froth floatation is :
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In Goldschmit alumino thermic process, thermite mixture is :
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