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A) coating with paint, oil, grease or plastic.
B) tin-plating.
C) zinc-plating.
D) electroplating.
E) using sacrificial metals.
F) impressed current cathodic protection.
G) using corrosion resisting alloys of iron.

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Rusting can be observed using a rust indicator, a mixture of potassium hexacyanoferrate and phenolphthalein.

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The method of speed up the rusting process

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The method of speed up the rusting process

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a) presence of ionic substances
b) presence of acidic pollutants
c) higher temperature
d) scratching or bending the surface
e) attachment to a less reactive metal.

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For rusting to occur, two things must be present: air (oxygen) and water

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The corrosion of iron is called rusting. Rust is the reddish-brown crust that forms on the substances the iron.

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The deterioration of a metal due to its reaction with oxygen, moisture or other substances environment is called corrosion .